Frequently Asked Questions
Answers about product selection, application, certifications, care, and where to find LEINOS in India.
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Wood Finishes
Application, drying, compatibility, and care for natural wood finishes — interior, exterior, floors, furniture, kitchen, doors, terraces, outdoor pieces, and children’s items.
Interior Wood (umbrella)
- Pick the surface where the WRONG choice has the highest visual or functional cost, and start there. For most Indian apartment builds that is either (a) the kitchen worktop — Countertop Oil 280 is the only food-contact-documented product in the set and is non-substitutable, OR (b) the painted woodwork (doors, window frames, white skirting) — the 810 → 820 / 840 / 845 lacquer system requires correct primer + topcoat sequencing across many surfaces, and the yellowing failure mode of commodity enamels is highly visible across the whole apartment after 18 months. Floors and freestanding furniture are forgiving by comparison. Once you have specified the high-stakes surfaces, enter each sub-route page for the per-surface application detail and order materials room by room.
- Yes — this is the canonical pattern, not a workaround. The four interior oils (240 / 290 / 241 / 259) are all linseed-based, vapour-permeable, and share the same penetrating-finish character; visually they read as the same family. Tone shift between them is subtle on warm Indian hardwoods (teak, sheesham, Burma teak): 240 and 290 produce a similar warm-amber result; 241 is engineered to stay non-yellowing on pale woods. A single dining table commonly takes two oils — Hardwax Oil 290 on the horizontal top (daily plate-and-glass wear) and Hard Oil 240 on the frame (legs, aprons, structural elements). See the dedicated Interior Furniture & Cabinets sub-route page for the surface-by-surface map within a single piece.
- The umbrella is a routing tool, not a duplicate of the six sub-routes. If you already know your surface (a dining table, a staircase, a worktop, a toy, a painted door, a worn cabinet), enter the matching tab below and go straight to the dedicated sub-route page — that is where the per-surface decision matrix, full application sequence, TDS-grounded numbers, and surface-specific FAQ live. The umbrella exists for the visitor who is upstream of that decision — architect or homeowner specifying a whole-home build, who needs to orient across the LEINOS interior wood set before drilling into each surface family. Routing the right visitor to the right depth is the umbrella's only job.
- Technically yes for the clear-oil surfaces (furniture, floors, stairs, natural-finish doors, natural-finish skirting) — Hardwax Oil 290 will perform acceptably on all of them. But three categories are genuinely non-substitutable. Kitchen worktops and food-contact surfaces require Countertop Oil 280 specifically — only 280 carries the DIN EN 71-3 + Reg (EC) 1935/2004 food-contact documentation. Children's toys and nursery furniture require Countertop Oil 280 for the same reason. Any painted opaque finish (white doors, painted window frames, coloured skirting) requires the 810 → 820 / 840 / 845 lacquer system — 290 is a clear oil, it cannot deliver an opaque painted surface. For the remaining surfaces, the per-tab decision matrix on each sub-route page explains why 240 vs 290 vs 241 vs 259 matters on specific surfaces — small chemistry differences that materially change the wear pattern and the re-finish cycle.
- Decide by finish INTENT first, then by surface. If the wood grain IS the design feature — heritage Burma teak / sheesham panel doors in an older bungalow, natural-tone hardwood skirting in a haveli home, exposed-grain window frames — pick the clear-oil path (Hardwax Oil 290 default for daily-contact surfaces, Hard Oil Universal 259 for fast turnaround). If the architect or homeowner specifies a painted opaque colour — most modern apartment flush-panel doors, white window frames, painted skirting matched to the wall — pick the opaque-lacquer path (Resin Lacquer Primer 810 first, always, then White Lacquer 820 for white default, Finishing Lacquer 840 for 10 fixed colours, or Finishing Lacquer Mix 845 for custom NCS / RAL tints). Both paths get Wood Filler 337 first for nail holes, knots, and mitre gaps. See the Doors, Frames & Joinery sub-route page for the per-surface tab breakdown.
- Three differences matter day-to-day. First, breathability — every LEINOS clear oil is vapour-permeable, so the wood continues to regulate moisture exchange across the Indian summer-to-monsoon humidity swing (RH 30% to RH 85%). Commodity film-forming polyurethanes seal the wood; trapped moisture causes warping, joint cracking, and finish blistering. Second, spot-repairability — because LEINOS oils penetrate into the wood fibre rather than sitting on top as a film, localised wear (handle zone on a door, nosing on a stair tread, ring marks on a table top) can be sanded P320 and re-oiled in the affected zone alone, no full-strip refinishing. Commodity lacquers and varnishes must be stripped entirely once they fail. Third, ingredient transparency — the LEINOS interior set is linseed-and-natural-resin core, low VOC across the range, with documented food-contact and toy-safety standards on 280 specifically. Commodity wood finishes typically do not document ingredient or safety class. See each sub-route page for the surface-specific maintenance cycle that this character enables.
Exterior Wood (umbrella)
- If the project is a walkable deck or terrace board (foot traffic + heel-strike + standing water on horizontal planks), enter the dedicated Exterior Terraces & Decking sub-route via the Related Paths cards — that surface has its own floor-grade coat build. If the project is object-level garden furniture (a teak dining set, a forest-green park bench, a wooden planter box), enter the Garden Furniture & Outdoor Benches tab and follow its link to the dedicated Exterior Outdoor Furniture sub-route. If the project is architectural envelope timber (cedar shingle facade, teak compound gate, sheesham pergola, picket fence) — the umbrella's unique value family — stay on the General Exterior Wood tab where the per-surface configurations live. For maintenance work on already-finished exterior wood, follow the Care & Maintenance tab to the dedicated care page.
- Wood species decides, not application. Teak Oil 223 is engineered for tropical hardwood — teak, Burma teak, sheesham, bangkirai — where dense fibre and natural oil content suit the oil-resin formula. This holds whether the surface is a garden dining table, a compound gate, or a teak shingle cladding panel. Terrace Wood Oil 236 covers mixed-species or non-tropical hardwood (mango, sal, cedar, eucalyptus) and softwood across every family — cedar shingle cladding, sal pergola beam, eucalyptus fence post, mango garden bench. When the species is unknown or the piece carries mixed components (a teak frame with sal infill), default to 236 — it is the safer base oil across uncertain or mixed Indian exterior timber.
- Clear-oil finish (223 or 236, with optional 260 topcoat) keeps the wood grain as the visual feature and is refreshable without sand-back — Anti-Greying Fluid 940 returns the warm wood tone, then a single thin coat of base oil restores protection. The clear-oil patina deepens to honey over 6–12 months in Indian outdoor context, which is desirable on tropical hardwood gates, teak garden furniture, and cedar shingle cladding. Opaque paint (Primer 150 + 236 sealer + 850 oil-based or 855 water-based) hides the wood species entirely and ties the surface into a design palette — useful for heritage compound gates in forest green or oxide red, painted picket fence runs, design-coordinated cladding, and any surface with continuous moisture transfer (planter exteriors, storage-bench lid recesses). Re-paint cycle is longer (5–7 years inland, 3–5 years coastal) than re-oil cycle (12–18 months) but a full re-paint requires sand-back to bare wood. The choice is design intent first, surface stress second.
- Impregnation Wood Primer 150 carries the IPBC biocide barrier that prevents blue-stain fungus — the single most common discolouration source on Indian envelope wood in monsoon RH 80–95%. Sap-stain bleeds through any pigmented or opaque finish within 18 months of monsoon exposure when 150 is skipped, which is the most common Indian-context failure mode on exterior wood. Genuine skip cases are narrow: confirmed-teak or Burma-teak surfaces finished CLEAR with two coats of Teak Oil 223 alone (no pigmented or opaque topcoat). Everywhere else — under any Premium Wood Varnish 260 in colour, under any Weatherproof Paint 850 or 855, on any softwood or mixed-species surface — Primer 150 is mandatory. 1 coat by brush, dust-dry 12 h.
- The documented application window across all exterior wood families is the cool dry season — October through February in most of India. Avoid monsoon RH peak (July through September) when oil cure stalls past 24 h and paint film traps surface moisture under cured topcoat. Work in shade or evening to avoid sun-heated wood flash-curing oil before it can penetrate; ambient temperature 18–28°C is ideal across the 10-product set. Minimum temperature 10°C for oils (223, 236, 600, 855), 15°C for primer and varnish (150, 260, 850). Allow at least 24 h after the final coat before light use, and 7–14 days (oil stack) or 14–28 days (paint stack) for full weather-resistance cure.
- Re-oil cycle on south-facing exterior wood: 12 months on clear-oiled finish; 18 months under Premium Wood Varnish 260 topcoat; 24–36 months under opaque Paint 850. North-facing exposure stretches each interval by 6–12 months. Coastal salt-air sites (Goa, Mumbai, Chennai, Pondicherry) carry a documented 30–50% UV-degradation multiplier — every cycle shortens by 2–4 months vs inland Bangalore or Pune. Plan annual inspection on coastal sites, triennial inland. Refresh-tone (without strip-back) cycle: Anti-Greying Fluid 940 on clear-oiled surfaces every 12 months, then 1 thin coat of base oil restores tone and protection. Full strip-and-recoat is only required when the topcoat film is failing.
Floors & Terraces
- Floor and terrace finishes apply to walkable wooden surfaces including interior solid wood or engineered flooring, exterior wooden decks, and timber terraces.
- Floor and terrace applications are defined by regular foot traffic, mechanical surface wear, and clearly defined interior or exterior exposure conditions.
- No. Floor and terrace systems are designed for walkable surfaces with abrasion requirements and do not extend to furniture, cabinetry, doors, or joinery objects.
- Exterior terrace finishes are formulated for weather exposure. For interior floors, use dedicated interior floor finishing systems that address indoor climate and foot traffic without outdoor durability requirements.
Interior Furniture & Cabinets
- Pick by surface, not aesthetic. Horizontal tops that take daily plate, glass, mug, or pen contact (dining table, desk, coffee table) → Hardwax Oil 290 — micro-wax adds surface hardness. Frames, legs, chair backs, cabinet panels, wardrobe interiors → Hard Oil 240 — deep penetration without surface-film build. Pale woods (ash, maple, birch, white-oak) where yellowing would shift the design intent → Hard Oil Clear 241 — non-yellowing safflower formula. Tight install schedule or production-shop batch run → Hard Oil Universal 259 — 3 thin coats via sealing roller, no intermediate sanding. A single piece often takes two products: 290 on the top, 240 on the frame.
- The dining table top sees plate edges, glass rings, hot mug bases, and daily wipe-down abrasion. Hard Oil 240 penetrates deep but does not build surface hardness — daily scratches and ring marks appear within months. Hardwax Oil 290 has a micro-wax network that cures into a hardened surface layer (still penetrating, not a film) — the same chemistry that makes 290 the canonical floor finish protects the table top from the same wear pattern at table scale. Note: for actual food-contact surfaces (worktops, cutting boards) the documented product is Countertop Oil 280 with EN 71-3 — see the Kitchen & Food-Contact solution.
- Dining table top in daily family use: every 12–18 months. Desk top under work-from-home daily use: every 2–3 years. Coffee table top: every 2 years. Frames and structural elements on all three: every 5+ years. The bead test diagnoses each surface: drip water on the top — if it beads, the finish is intact; if the wood darkens under the drop, that zone is due. Re-oil is a single light coat of the same product, sanded P320 over any worn patch, no full-strip refinishing.
- Yes, for an install schedule that can't accommodate overnight drying between coats. 259 is engineered for the sealing-roller method: 3 thin coats applied at 6–8 h intervals, no intermediate sanding required, foot-traffic and handling ready 16–24 h after the third coat. This lets a multi-room cabinet install finish in a single 24-hour shift instead of staggering across multiple visits. Trade-off: 259 doesn't have the micro-wax surface-hardness story of 290, so high-handle cabinet doors with daily metal-pull wear may need a 290 top-coat over time. For everyday cabinet runs, 259 is a clean single-product choice.
- Yes — linseed-based oils including Hard Oil 240 cause a gradual warm-amber shift on pale woods that intensifies over the first 12–24 months. For pieces where the pale tone is the design intent (Scandi-style ash dining sets, birch desks, white-oak shelving), use Hard Oil Clear 241 instead. 241 is safflower-based; the formula is engineered to stay non-yellowing across the cure and life of the finish. Use 241 across the whole piece (top + frame) for consistency.
- Engineered boards (MDF, particleboard) don't absorb oil evenly — the adhesive layer breaks the oil-to-fibre bond and the surface stays patchy. Pre-finished modular wardrobes (melamine, laminate, foil-wrap, factory PU) have a sealed surface that won't accept oil at all. For mixed-substrate pieces (solid teak frame + MDF panels), oil only the solid-wood elements; the engineered panels remain as the factory finished them. The interior oil set is designed for bare absorbent solid wood — that's where the chemistry works.
Interior Floors & Stairs
- Pick by surface and traffic concentration, not aesthetic. Whole-floor pass across warm Indian hardwoods (teak, sheesham, Burma teak) → Hard Oil 240 (2 coats wet-on-wet) — deep penetration handles the field. High-traffic concentration zones inside the same room (entry hall, living-room circulation arc, dining-table area) or stair treads → Hardwax Oil 290 — micro-wax adds surface hardness against the foot-and-heel abrasion that concentrates there. Pale-wood floors and parquet (white oak chevron, ash, maple) where yellowing would change the design → Hard Oil Clear 241 — non-yellowing safflower formula. Multi-flight stair build or large commercial parquet install on a tight schedule → Hard Oil Universal 259 — 3 thin coats via sealing roller, foot-traffic safe 16–24 h. A single staircase often takes two products: 290 on the treads, 240 on the risers and stringers to match the adjacent floor.
- Stair treads carry every household pass concentrated to a narrow strip — heel-strike on the nosing, mid-foot on the tread, slipper-toe at the riser. ~5,000 passes per tread per year in a residential Indian home, and the nosing edge takes the highest mechanical load on the staircase. Hard Oil 240 penetrates deep but does not build surface hardness; the nosing edge strips within 12–18 months of barefoot family use. Hardwax Oil 290 has a micro-wax network that cures into a hardened surface layer (still penetrating, not a film) — the same chemistry that makes 290 the floor concentration-zone answer protects the stair tread at the same wear pattern. On the floor itself, the field is large and the wear is distributed, so 240 is the volume-economic default.
- Residential living-room floor: traffic arc (entry-to-sofa, sofa-to-kitchen) every 12–18 months, perimeter and corner zones every 3–5 years. Stair treads in daily family use: every 18–24 months (the nosing wears first); risers and stringers every 5+ years. Parquet: traffic arc every 12–18 months; the pattern joints rarely need attention. The bead test diagnoses each zone — drip water on the board or tread; if it beads the finish is intact, if the wood darkens that zone is due. Re-oil is a single light coat of the same product, sanded P320 over any worn patch, no full-floor stripping.
- Yes, for an install schedule that cannot accommodate overnight drying between coats. 259 is engineered for the sealing-roller method: 3 thin coats applied at 6–8 h intervals, no intermediate sanding required, foot-traffic ready 16–24 h after the third coat. This lets a multi-room floor + multi-flight stair install finish in a single 24-hour shift instead of staggering across multiple visits — a real schedule advantage on commercial fit-outs and model-home deadlines. Trade-off: 259 does not have the micro-wax surface-hardness story of 290, so high-traffic floor zones and stair-nosing edges may need a 290 top-coat over time (year 2–3). For straightforward residential floor installs where the schedule has overnight access, the 240+290 pairing is the canonical answer.
- Yes — linseed-based oils including Hard Oil 240 cause a gradual warm-amber shift on pale woods that intensifies over the first 12–24 months. On warm Indian hardwoods (teak, sheesham, mango) the shift reads as figure enhancement and is welcome. On white oak chevron, ash brick-bond, maple herringbone where the geometric design intent depends on the tone staying pale, the shift visibly changes the pattern reading. For these floors use Hard Oil Clear 241 instead — safflower-based, engineered to stay non-yellowing across the cure and life of the finish. Use 241 across the whole pattern for consistency.
- Factory-pre-finished engineered flooring carries a UV-cured polyurethane top layer applied at the factory under industrial conditions. The PU wear-layer is sealed — it does not absorb oil, and any oil applied over it pools, stays tacky, and does not bond. The interior oil set is designed for bare absorbent hardwood; that is where the chemistry works. If you have pre-finished engineered floors, two options: strip the PU wear-layer back to the bare hardwood beneath (requires drum-sander pass with P40 → P80 → P120, and only works on engineered floors with a ≥4 mm hardwood wear-layer above the plywood core), OR accept the factory finish as-is and use the LEINOS care set (Vegetable Soap 930) for maintenance.
Doors, Frames & Joinery
- Decide by finish intent first, then by surface. If the wood grain IS the design feature (heritage Burma teak / sheesham panel door, natural-tone hardwood skirting in an older bungalow, exposed-grain window frames): clear-oil path — Hardwax Oil 290 default (2 coats brush), Hard Oil Universal 259 for fast install (3 thin coats sealing roller). If the architect or homeowner specifies a painted opaque colour (most modern apartment flush-panel doors, white window frames, painted skirting matched to wall): opaque-lacquer path — Resin Lacquer Primer 810 (always 1 coat first) then White Lacquer 820 (default white), Finishing Lacquer 840 (10 fixed colours), or Finishing Lacquer Mix 845 (custom NCS / RAL tints). Both paths get Wood Filler 337 first for any holes, knots, or mitre gaps. Window frames are the exception — they rarely need filler-grade repair, so 337 doesn't appear in that tab.
- Walk through an Indian apartment painted with commodity enamel after 18 months — every white door, every white window frame, every stretch of white skirting reads visibly yellow-cream against the still-white walls. The room reads "tired" even though only the joinery has shifted. A typical 3BHK has 8 doors, 10 windows, and 60–80 m of skirting all painted white. White Lacquer 820 is specifically engineered against the linseed-oil yellowing problem that ages every plant-based white paint — minimal yellowing across the 7–10 year recoat cycle. The premium is one-line on the BOQ; the visual cost of yellowing is everywhere, every day.
- Lacquered doors: handle zone and bottom edge every 7–10 years, panel faces 10+ years. Lacquered window frames: head rail (curtain-hardware contact) and sill every 5–7 years, jamb faces every 8–10 years. Lacquered skirting: bottom 50 mm jhadu-pochha contact zone every 4–6 years (this is where the system works hardest in Indian homes), face above that every 8–10 years. Naturally-finished oiled equivalents need more frequent attention — handle/sill/skirting-edge zones every 2–3 years on oils, but spot-repair is local without stripping the whole element. Pick the path that matches your re-finish appetite.
- No — 810 Resin Lacquer Primer is non-optional on bare wood. It provides three things: opacity foundation (without it the topcoat needs 3–4 coats to cover knot-bleed and grain), bond chemistry (the lacquer film adheres to the cured primer, not the absorbent wood directly), and sand-grip (you light-sand between primer and topcoat for the silk-gloss finish to flow level). The only context where you can skip 810 is recoating over an existing sound lacquer film of the same chemistry family — light P180 sand, dust off, two fresh topcoats. On bare wood, on filler-patched zones, on any sanded-back surface: 810 first, always.
- Yes — Finishing Lacquer Mix 845 is the LEINOS tintable-base lacquer, machine-tinted to any NCS or RAL colour via a paint-mixing system at the dealer. Use 845 over 810 primer (2 coats). Common cases: matching skirting to a custom wall colour the architect specified outside Asian Paints / Berger commodity codes; matching window frames to a brand-identity facade colour; matching doors to a fabric or furniture finish. 840 covers the 10 most common fixed colours (White, Black, Anthracite Grey, Light Grey, Fir Green, Dove Blue, Nordic Red, Yellow, Blue, Leaf Green) and is mutually mixable for custom blends within the palette; 845 is the answer for anything outside those 10.
- Yes — this is a documented architectural pattern (visible especially on Indian heritage restorations where the door panel keeps the original Burma teak finish and the surrounding architrave / casing gets re-painted white). The two paths cure independently: oil the panel first with Hardwax Oil 290 (2 coats, brush, wipe excess), let cure 7 days, then mask the oiled panel edge and apply the lacquer system to the frame / architrave (810 primer + 820 white). The mask line stays clean because the oiled surface is fully sealed before the lacquer goes on. Reverse sequence (lacquer frame first, then oil panel) also works — let the lacquer cure 14 days before un-masking and oiling the panel.
Kitchen & Food-Contact Surfaces
- A worktop in active daily kitchen use needs re-oiling roughly once a month for the first year, then 2–3 times a year once the wood has fully saturated. The simplest test: drip water on the worktop — if it beads, the finish is intact; if the wood darkens under the drop, that area is due for a refresh.
- Yes — once the full 7–10 day polymer cure is complete after the final coat. This window is non-negotiable for direct food contact, because EN 71-3 migration compliance applies to a fully cured finish, not a wet one. The oil sits inside the wood fibre, not on top, so there is no surface film to chip into food during cutting.
- Turmeric, raw ginger juice, beetroot, and saffron will stain bare wood if left standing — Countertop Oil 280 slows the penetration but does not form a barrier. Wipe spills within minutes, not hours. If a stain takes hold, light P320 sanding of the affected spot plus a fresh coat of 280 restores both colour and protection.
- During the first 24 hours after application, hot oil splatters can lift the still-curing finish — wipe immediately and let the area dry overnight. After the 7–10 day full cure, the surface tolerates routine kitchen splatters. Use a trivet under hot kadai, tawa, or pressure-cooker bases regardless; direct heat damages the wood itself, not just the oil.
- Countertop Oil 280 is the complete system for this surface class. No primer (a sealed primed surface would block oil penetration) and no separate topcoat — the optional third coat over heavy-load zones IS the topcoat in this method. Two to three coats of 280, wet-on-wet, is the documented system per the LEINOS Technical Data Sheet.
- Mineral oil and beeswax mixes are food-safe in the colloquial sense but lack the EN 71-3 migration testing and Regulation (EC) 1935/2004 documentation that an architect can specify or a commercial kitchen inspector can verify. Countertop Oil 280 also cures inside the wood as a drying oil — mineral oil never cures and needs continuous re-application. For specifier-grade work, only the tested system counts.
Children’s Items & Toys
- After the full 7–10 day polymer cure at room temperature — not before. This window is non-negotiable for children’s contact. The EN 71-3 migration limits and Regulation (EC) 1935/2004 documentation apply to a fully cured oxidised finish, not a still-curing wet one. Keep the toy out of reach and the cot out of the nursery for the full window before child access begins.
- Countertop Oil 280 is the complete system for children’s wood surfaces. No primer (a sealed primed surface would block oil penetration) and no separate topcoat — the optional third coat on teething rails and high-handle zones IS the build-up in this method. Two coats on the frame, three coats where the child’s mouth contacts the wood, wet-on-wet per the LEINOS Technical Data Sheet.
- A penetrating oil does not sit on the surface as a film the way lacquer, polyurethane, or varnish does — it has cured inside the wood fibre, chemically inert. There is nothing to chip, flake, or peel into the mouth. The EN 71-3 migration testing is specifically designed for the chew-the-cot-rail scenario. If the rail looks dry or feels rough after months of teething, sand lightly with P320 and re-oil locally; let cure 7–10 days again before the child has access.
- Turmeric paste, raw ginger juice, beetroot, and saffron will stain bare wood if left standing — Countertop Oil 280 slows the penetration but does not form a barrier. Wipe spills within minutes, not hours. Drool, milk, and breast-milk are non-staining and wipe clean with a damp cloth. If a turmeric stain takes hold on a high-chair tray or feeding spoon, sand lightly with P320 and re-oil the spot.
- Mineral oil and beeswax mixes are colloquially food-safe but lack the DIN EN 71-3 migration testing and Regulation (EC) 1935/2004 + LFGB §31 documentation that an Indian toy-safety auditor, export-certifier, or specifying architect can verify. Countertop Oil 280 also cures inside the wood as a drying oil — mineral oil never cures and needs continuous re-application as it sweats out. For production toy work, nursery brand goods, or hospital cots, only the tested system counts.
- No. Children’s items per EN 71-3 must use solid wood substrate, and cot construction per BIS IS 13830 / EN 716 requires solid hardwood frames. Engineered boards may carry formaldehyde-based adhesives that no surface finish compensates for. Oil only the solid-wood elements of mixed-substrate furniture; the plywood or MDF panels remain outside the children’s-safety scope.
Exterior Terraces & Decking
- Wood species decides the product, not aesthetic. Teak, Burma teak, bangkirai, and ipe are dense tropical hardwoods — their end-grain is so tight that standard exterior oils sit on top and never penetrate. Teak Oil 223 is engineered with a deep-impregnation chemistry that breaks through the dense fibre. A simple drop test confirms: water that beads off in seconds = dense tropical (use 223); water that absorbs in under a minute = absorbent softwood or standard hardwood (use 236). Applying 236 to a teak deck will leave a sticky surface film that flakes within one season.
- Indian climate cycles re-oil every ~12 months on horizontal deck boards, vs European ~24 months. The driver is monsoon RH 80–95% combined with strong UV — both stress the oil faster than European weather. South-facing or coastal decks (Mumbai high-rise, Goa beachfront) may need a top-up coat per monsoon cycle. The bead test is the cleanest diagnosis: drip water on a board. If it beads → finish is intact. If the wood darkens under the drop → that zone is due for a re-oil. For greyed boards, use Anti-Greying Fluid 940 first to restore the natural tone before the new oil locks it in.
- UV greying within 12 months on untreated or sparsely-oiled tropical hardwood is normal — the oil slows the lignin photodegradation, it does not stop it. You do not need to strip and restart. Apply Anti-Greying Fluid 940 with a synthetic brush to restore the natural wood tone (let dry per its TDS, typically 24 h), then re-oil with the species-matched product (236 or 223). 940 lives in the Care: Exterior Terraces & Furniture solution, not in this route's SKU set. The whole greying-to-fresh cycle is a 2-day weekend job, not a refinishing project.
- Pool-surround boardwalks need Teak Oil 223 even on softwood substrates — the built-in IPBC sapstain protection extends chlorine-damaged-fibre life by ~6 months vs Terrace Wood Oil 236 alone. Apply 2 coats on the riser + 3 thin coats on the tread first install. Re-oil tread every 6–9 months under residential traffic, every 6 months under commercial pool traffic. Critical: keep the deck dry for the full 72 h cure before any chlorinated splash exposure — chlorine attacks uncured oil and shortens the finish life by half.
- No. Interior oils contain no UV stabilisers and no IPBC sapstain biocide — even a chajja-covered terrace sees indirect UV, monsoon humidity blow-through, and the salt-air or pollen exposure that pre-conditions mould bloom. A covered terrace finished with 290 or 240 will grey within 6 months and mould within 4 weeks of monsoon. Use Terrace Wood Oil 236 (softwood/sheesham terraces) or Teak Oil 223 (teak/bangkirai terraces) for any outdoor walkable surface — including partial-cover. The "interior" vs "exterior" line is set by exposure, not by roof presence.
- No — moisture content matters more than calendar timing. After power-washing, the deck must dry 48–72 h before any oil goes on, sometimes 5–7 days on Mumbai/Goa coastal decks after heavy monsoon. Measure with a pin moisture meter on the underside of a board — must read ≤14% before oil. Oiling a wet deck traps moisture inside the wood and the finish bubbles, cracks, or stays sticky within weeks. Also use moderate pressure (1500–2000 PSI) for the wash — high-pressure jets shred soft summer-grain on cedar and pine and leave a fluffed surface that absorbs unevenly.
Exterior Outdoor Furniture
- Skip Primer 150 on a confirmed-teak or Burma-teak dining set finished clear with two coats of Teak Oil 223 alone — the dense tropical hardwood and the unbroken open-fibre uptake do the protection work. Apply Primer 150 (mandatory) under any pigmented Premium Wood Varnish 260, under either Weatherproof Paint (850 or 855), and on any softwood or mixed-species bench regardless of topcoat — the IPBC blue-stain barrier is what prevents sap-stain streaking through paint film within 18 months of Indian monsoon exposure. Skipping the primer under opaque paint is the single most common Indian-context failure mode on outdoor wood.
- Wood species decides. Teak Oil 223 is engineered for tropical hardwood — teak, Burma teak, sheesham, bangkirai — where the dense fibre and natural oil content suit the oil-resin formula. Terrace Wood Oil 236 covers mixed-species or non-tropical hardwood (mango, sal, cedar) where uneven absorption and softer fibre call for the deeper-penetration sealer character. If the wood species is unknown or the piece carries mixed components from a garden-furniture set, default to 236 — it is the safer base oil across uncertain hardwood. Never use interior Hard Oil 240 or Hardwax Oil 290 outdoors — interior oils carry no UV stabilisers.
- Clear oil (223 or 236, with optional 260 topcoat) keeps the wood grain as the visual feature and is refreshable without sanding back — Anti-Greying Fluid 940 returns the warm wood tone, then a single coat of base oil restores protection. The clear-oil patina deepens to honey over 6–12 months in Indian outdoor context, which is desirable on tropical hardwood. Opaque paint (Primer 150 + 236 sealer + 850 or 855) hides the wood species entirely and ties the piece into a design palette — useful for colour-coordinated chair runs, heritage benches (forest green, oxide red), or planter exteriors. Opaque paint also seals against continuous moisture better than clear oil, which is why garden storage and planters default to the painted stack. Re-paint cycle is longer (5–7 years inland) than re-oil cycle (12–18 months) but a full re-paint requires sand-back to bare.
- 850 (oil-based, semi-gloss) is the default for maximum weather resistance — useful on heritage cantonment-park benches, exposed garden storage in coastal salt-air, and any opaque-painted piece where the longest service interval matters. 855 (water-based, matte, brush only, touch-dry 2 h) eliminates the solvent odour during application — important when the work happens in occupied apartments without forced ventilation (a balcony bench, a courtyard planter), or where matte aesthetic is the design intent. Both require Primer 150 underneath. 855 cures faster between coats (4 h vs 24 h), useful for tight install schedules; 850 holds gloss longer in Indian UV intensity.
- Yes — solid-wood garden gates, picket fences, gate panels, and arbours fall within the outdoor furniture stack logic. Treat the gate as a vertical bench or planter wall: Primer 150 (recommended on softwood, mandatory under any opaque paint) → Terrace Wood Oil 236 (2 coats wet-on-wet, or 1 coat sealer under paint) → optional topcoat by design intent. For metal-frame gates with wood-slat infill, oil the wood slats per the stack and follow the metal-frame paint system separately. For trellis arbours that carry vines and continuous leaf-shade moisture, treat as planter-class exposure — full Primer 150 + 236 + 850 stack.
- The documented window is the cool dry season — October through February across most of India. Avoid monsoon RH peak (July through September) when oil cure stalls past 24 h and paint film traps surface moisture. Work in shade or evening to avoid sun-heated wood flash-curing the oil before it can penetrate; ambient temperature 18–28°C is ideal. Allow at least 24 h after the final coat before light use, and 7–14 days (oil stack) or 14–28 days (paint stack) for full weather-resistance cure. Re-oil cycle on a daily-use Indian garden dining set: 12 months on clear-finished tropical hardwood, 18 months with 260 topcoat, 18–24 months on opaque-painted softwood; coastal salt-air shortens these by 2–4 months. Refresh tone between full re-oils with Anti-Greying Fluid 940.
Walls & Facades
Interior walls, exterior walls, mineral facades, breathable anti-mould systems, and decorative mineral finishes — for an Indian climate.
Interior Walls
- Pick by room reality, not aesthetic preference. Living rooms, bedrooms (dry, comfort-focused) → Natural Resin Emulsion 660 over Deep Sealer 620 primer; tinted via 668 for warm earthy schemes. Kitchens and dining (cooking vapour + wipe-clean) → same 660 stack + MANDATORY Wall Wax 350 on the splash zone. Bathrooms (moisture-tolerance + ventilation-paired) → Lime Brush Rendering 667 over Silicate Primer 621 (breathable mineral default) OR 660 + Wall Wax 350 outside the direct splash zone. Corridors and stairwells (high-traffic scuff) → 660 + MANDATORY Wall Wax 350 on the lower 1.2 m. Ceilings → Interior White Paint 650 spray-grade for modern apartments, Lime Brush Rendering 667 for heritage receptions. Each tab below shows the per-room stack in full.
- Natural Resin Emulsion 660 recoat extends from 4–6 h to 8–12 h, and full cure from 24–48 h to 48–72 h. Lime Brush Rendering 667 carbonation cure extends from 7–14 d to 21 d. The chemistry does not fail in monsoon humidity — it slows. Plan painting for the cool-dry window (Oct–Feb in most of India) when possible. If site schedule forces July–September work, run dehumidifier or fans during cure and accept the extended timeline. The Wall Wax 350 application window also extends: wait 14 d cure on 660 (vs 7 d normal) before applying wax in monsoon.
- Almost certainly no — Indian bathroom mould is a ventilation issue first, chemistry issue second. If the bathroom has no exhaust fan running 15+ min after each shower AND no window opening during shower, mould will grow on lime, on emulsion + wax, on silicate, on tile grout, on every surface. Lime Brush Rendering 667 self-defends against minor seasonal mould via alkaline pH 12+ chemistry, but it cannot rescue an unventilated closed-window apartment with 4 showers/day at RH 95%+. Before specifying any paint, confirm exhaust fan operation. If ventilation is the primary problem, refer to the Breathable Anti-Mould Systems route which couples the ventilation protocol with the paint chemistry — and consider whether the brief is HVAC, not paint.
- No — 667 needs an alkaline mineral substrate (fresh lime plaster, ≤6 months old, pH 10+) to carbonate and bond. Old painted walls (even old emulsion paint) are too neutral and too sealed; the lime coat will not bond and will dust off within 30 days. If the existing wall is sound emulsion, switch to Natural Resin Emulsion 660 over Deep Sealer 620 — both bond well to clean old emulsion. If the brief specifically requires the breathable lime register on an old wall, the wall needs to be stripped back to bare plaster and re-skimmed with fresh lime plaster first — that is a substrate-rework decision, not a paint decision.
- Natural Resin Emulsion 660 in normal residential use: 5–7 years inland (Bangalore, Pune), 3–5 years coastal (Mumbai, Goa, Chennai) where salt-air UV reduces colour fastness. Lime Brush Rendering 667 wears as patina rather than full failure: refresh-wash every 18–24 months (single thinned coat over existing lime), full re-coat 10+ years. Interior White Paint 650 ceilings: 7–10 years inland, 5–7 coastal. Wall Wax 350 dado/splash bands: refresh every 18 months (residential) to 12 months (commercial). Re-paint cycle does not require strip-back if the existing 660/650 paint is sound — clean, light scuff-sand P220, recoat. Lime needs no stripping ever — fresh lime bonds over carbonated lime indefinitely.
- No, the chemistry-bonding requirement is one-way. Lime needs alkaline mineral substrate; emulsion bonds to clean dry plaster or sound old emulsion. You can apply 660 over a stripped lime wall (sand back the carbonated lime, apply Deep Sealer 620, then 660 emulsion) — emulsion is the more tolerant chemistry. You cannot apply 667 lime over 660 emulsion; the lime will not bond and will dust off. Plan the chemistry family at the start of a room's life cycle. Mid-life chemistry changes are rare and require substrate rework, not just over-painting.
Exterior Walls
- Substrate decides. ProfiSol (612 Fine, 613 Coarse) is sol-silicate — it bonds chemically to bare mineral substrates (lime plaster, cement plaster, masonry, AAC, concrete, sound mineral coatings) through silicification. Universil (614 Fine, 615 Coarse) is silicate — it mineralises previously-painted synthetic facades (acrylic, alkyd, resin emulsion) and WDVS thermal insulation systems where pure silicate cannot bond directly. The diagnostic: scratch a coin across the existing facade. If a polymer film peels back in a flake, you are on a synthetic-coated facade — use Universil. If the surface powders or stays mineral-textured, it is bare or mineral-coated — use ProfiSol. Mixing the two systems on the same facade is fine when the facade has both bare-mineral and previously-painted zones.
- Two situations call for Coarse. First, when the design intent is a textured-render appearance — heritage Pondicherry colonial, Goa villa boundary wall, cantonment-style compound wall — the Coarse grain gives a deliberately broken surface that catches sidelight differently from smooth Fine. Second, when the wall lives in a high-splash zone (the bottom 600 mm of any boundary wall during monsoon, with constant ground-water spray) — the Coarse grade resists the abrasive splash better than Fine. For the upper sections of the same wall, use Fine. For a small architectural facade detail or a smooth-render residential face, always Fine.
- On day-one cost per litre, sol-silicate ProfiSol is more expensive than commodity acrylic emulsion. On cost-per-year of facade life, it is cheaper. An acrylic emulsion facade in Mumbai or Bangalore typically needs full re-paint (strip + prime + 2 coats) every 3–4 years because the film cracks, peels, and grows mould at the joints. A ProfiSol facade on the same building needs maintenance wash-and-touch-up at 5–7 years and a full re-paint at 12–15 years. The silicate also chalks evenly with UV instead of peeling in patches, so the appearance ages gracefully instead of failing visibly. For any facade > 200 m², the math favours Pro-line within the first re-paint cycle.
- Silicification is the chemical reaction between potassium-silicate (the binder in ProfiSol and 622 primer) and the calcium and silica compounds in your mineral substrate. The paint binder fuses with the substrate at a molecular level — instead of sitting on top as a film like acrylic, it becomes part of the wall. Three practical consequences: (1) the coating cannot peel because there is no film to lift off; (2) the wall keeps breathing (sd-value 0.01 m means moisture vapour moves through almost unimpeded — critical in Indian monsoon humidity where trapped moisture causes the worst facade failures); (3) the colour ages by even mineral chalking rather than uneven film breakdown — a 10-year-old silicate facade looks slightly faded but uniform; a 10-year-old acrylic facade looks blotchy and patched.
- Two windows work: pre-monsoon (April–May, before the rains start) and post-monsoon (October–November, after the rains end and the wall has dried). Critical conditions: surface temperature 5–30 °C, ambient RH below 80%, no rain forecast within 24 h of the final coat, substrate moisture content below 14% measured with a contact meter. The monsoon-paint failures you have seen are almost all rain-on-wet-coat or paint-on-wet-substrate problems — the silicification reaction needs the substrate to be at the right moisture state and the coat needs 24 h to set before water exposure. Coastal sites (Goa, Mumbai, Chennai) need an extra 12–24 h moisture-equilibration after the monsoon ends before painting starts. In Bangalore and Pune where monsoon is gentler, the cool-dry window stretches longer (March–May, October–February).
- 5–7 years inland (Bangalore, Pune, Delhi NCR) for a properly applied ProfiSol facade. 3–5 years coastal (Mumbai, Goa, Chennai, Pondicherry, Kochi) because salt air accelerates UV degradation by 30–50% and forces an earlier re-paint. Maintenance schedule: annual wash-down at the start of the cool-dry season with plain water at moderate pressure (1500 PSI); spot-touch-up of any chalked or rain-streaked patches at year 3; full re-paint at year 5–7 (inland) or 3–5 (coastal). The silicate chalks evenly with UV rather than peeling, so the warning signs are visible months before the coating actually fails — you have time to plan the re-paint window into the calendar, you do not get caught by a sudden facade collapse the way acrylic emulsion facades fail.
Exterior Mineral Façades
- Sol-silicate (ProfiSol 612/613) silicifies into the mineral substrate — the binder becomes part of the wall through a permanent ion-exchange bond, sd-value 0.01 m keeps the envelope vapour-permeable, and the alkaline pH ≥ 11 suppresses algae and mould growth on the shaded north elevations typical of Bangalore and Pune. Acrylic-elastomeric façade paint sits as a synthetic film on top of the substrate — it bridges hairline cracks but blocks vapour escape, traps monsoon humidity behind the film, and lifts at the substrate interface within 5–7 years of Indian monsoon cycling. The mineral envelope ages by gentle chalking (a chalky surface dusts off; the bonded layer remains), the acrylic envelope ages by peeling and flaking. For 25+ year specification life on heritage or architectural projects, sol-silicate is the documented response.
- Yes — heritage lime-render and lime-mortar substrates are the canonical use case for sol-silicate. The traditional Indian limewash bedding is fully compatible with silicate chemistry (lime + silicate = calcium silicate hydrate, a stable mineral compound). Specification protocol for heritage work: 1) site survey to confirm no prior acrylic over-paint (the most common renovation contaminant) — if present, full mechanical strip back to lime substrate before specification; 2) custom mineral-pigment tinting to match the historical pigment record (saffron-yellow, brick-red, ochre, indigo, lime-blue — all accept sol-silicate tinting), photo-documented against archive references for preservation-board sign-off; 3) Profi Fixative 611 consolidation on friable historical render; 4) Primer 622 + ProfiSol 612 fine over the consolidated substrate. Many protected heritage zones require mineral chemistry by preservation law — sol-silicate is the documented specification.
- The documented application window is the cool-dry season — October through February across most of India, with the November–January core window for Mumbai, Goa, and Chennai coastal work. Avoid pre-monsoon May–June (substrate temperature exceeds the 30 °C documented ceiling on afternoon elevations) and the monsoon RH peak July–September (sd-value advantage is irrelevant if surface RH exceeds 80% at application and the silicate cannot carbonate to bond). Scaffolding moisture-shield mesh and tarpaulin are documented protocol on every elevation for the first 48 h after the final coat — driven rain within that window dilutes the partially silicified film and produces visible run-off marks that cannot be polished out. Schedule north-elevation work first (most forgiving exposure), east elevations second, south and west elevations only in the cool morning window with afternoon shade-netting in place.
- The full sol-silicate stack (Primer 622 + ProfiGrund 610 + ProfiSol 612/613) carries a 15–25 year documented re-coat cycle on properly prepared rendered or masonry substrate inland (Bangalore, Pune, Hyderabad), and 10–15 years on coastal salt-air sites (Mumbai sea-front, Goa, Chennai, Pondicherry). Heritage lime-substrate work in preservation context can run longer where the substrate carries its own self-healing lime cycle. The hybrid UniverSil 614/615 path carries a slightly shorter documented cycle (12–18 years inland, 8–12 coastal) — the acrylate component trades a portion of breathability for adhesion tolerance on hybrid substrate. The mineral bond does not "fail" by peeling like a film coating — it ages by gentle chalking; a re-coat is specified when colour wash-down approaches the design tolerance, not because the bond has detached.
- Sol-silicate paints accept tinting through lightfast mineral pigments only — synthetic organic pigments degrade under UV and are excluded from A1 colour-stability documentation. The factory-tintable range covers approximately 200 architect-specified mineral colours (BFS Merkblatt Nr. 26 colour-stability A1 across the full range). Saturated heritage tones — saffron-yellow, oxide-red, ochre, sienna, lime-blue, copper-green — are documented within the mineral-pigment palette; very saturated reds and blues approach the upper colour-strength limit and require sample-elevation review before bulk specification. For heritage colour-match against an archive sample, submit a 100 × 100 mm substrate-coated sample to LEINOS India technical for spectrophotometer match — the tinting is then locked at the factory batch level. Site-tinting is not specified — all colour matching happens at the manufacturing batch to guarantee elevation-to-elevation consistency.
- During and for 48 h after every coat, the working elevation must be shielded from driven rain by site-mesh plus tarpaulin draped from the scaffold rail. The reason is chemistry: sol-silicate carbonation (the silicification reaction that bonds the binder to the substrate) requires controlled CO₂ uptake from ambient air at a measured rate over the first 24–48 h; driven rain in that window dilutes the still-soluble silicate fraction and produces visible streak-and-run marks that cannot be polished out without re-coat. On coastal sites (Mumbai, Goa, Chennai, Pondicherry), the protocol also blocks salt-spray contamination of the curing surface — salt crystallisation within the partially-bonded film causes premature chalking. Specify the moisture-shield as a tender line item alongside the coating itself; it is not an optional site practice. Sun-side elevations additionally require shade-netting against flash-cure under direct afternoon UV, which causes a brittle surface crust over a still-wet underlayer.
Breathable Anti-Mould Systems
- Honest answer: the chemistry helps; it does not stop colonisation on its own. Lime Paint 665 cured carries an alkaline pH of approximately 12, which creates a substrate condition that fresh mould finds difficult to colonise under properly ventilated conditions. Mineral Plaster Primer 622 silicate paint forms a vapour-permeable mineral-bond that prevents moisture entrapment. Neither finish actively destroys anything. In a bathroom with broken ventilation, a basement without exhaust airflow, or a wall with active leaks, staining will reappear regardless of finish chemistry. The system performs as documented only when paired with adequate ventilation and a structurally-sound substrate.
- Lime Paint 665 cures through carbonation — the calcium hydroxide in the wet paint reacts with atmospheric CO₂ to form calcium carbonate (the same mineral as natural limestone). The cured film carries a residual alkaline pH of approximately 12. This is a substrate-chemistry property, not a treatment claim: the paint does not contain added biocides or any other active treatment agents. The alkaline surface conditions are inhospitable to the moisture-and-organic-nutrient environment that mould colonisation needs to establish.
- Mineral Plaster Primer 622 silicate paint cures by silicification — the potassium-silicate binder reacts with the mineral substrate (lime plaster, cement, masonry) to form a permanent mineral-to-mineral bond. The cured film is the substrate, not a film on the substrate. Vapour-diffusion resistance is exceptionally low (sd-value ~0.05 m), allowing indoor humidity that condenses on a cool wall to evaporate back out through the finish rather than persist behind a vapour-impermeable acrylic film. This is the chemistry-level reason mineral paints outperform conventional emulsions on monsoon-stressed walls.
- Diagnose the partner conditions in this order: (1) is the substrate dry — pin-meter below 4% MC across multiple points? If wet, find the source: plumbing leak behind the wall, roof drainage failure overhead, capillary rise from inadequate plinth, lateral ingress from outside grade. (2) Is the ventilation working — exhaust fan rated for room volume and confirmed running 20 min after every shower or 30 min daily in basements? (3) Has the prior finish been fully stripped — any residual acrylic or distemper film blocks the mineral-bond. (4) Was the recommended primer/paint pairing used (621+622 for silicate, 620+665 for lime, no cross-pairing)? Stain reappearance within 12 months almost always traces back to one of these four — not to the chemistry itself.
- No. The direct shower-spray zone — the inside walls of a shower enclosure, the splash-back behind a bath spout — is tile or stone, not paint. Lime and silicate paints belong on the wet-but-not-sprayed surfaces: the vanity wall, the towel-rail wall, the ceiling, the wall behind the door. The chemistry handles condensation and ambient humidity; it does not handle continuous direct water spray.
- Conventional "bathroom paint" is typically an acrylic emulsion with a film-forming binder and added fungicides. The film is vapour-impermeable, which traps condensation behind the paint where it persists. The fungicides slow visible staining for the first 12–24 months, then leach out and the staining returns — often worse than before, because moisture has accumulated behind the film. Mineral systems (lime, silicate) work by the opposite logic: vapour-permeable film, alkaline or mineral-bonded substrate chemistry, no leaching biocides. Service life under proper ventilation is 5–10 years inland and 3–5 years coastal, with no biocide-leaching failure mode. Trade-off: mineral paints require chemistry-matched primers, careful substrate preparation, and the ventilation discipline this system depends on.
Decorative Mineral Finishes
- Tadelakt (Vintage Finish 635 + stone-polish) carries a signature wet-look sheen that catches light differently across the wall — slightly metallic in raking afternoon light, almost matte head-on, polished to a soft glow that reads architectural. Limewash (Lime Paint 665) is the opposite — chalky-matte under all lighting, absorbing light rather than reflecting it, with deliberate brush-character that distinguishes it from spray-applied modern emulsion. Tadelakt = polished mineral; limewash = chalk mineral. The two registers are not interchangeable; they belong in different rooms in the same project.
- Small but real networks exist in Bangalore (multiple artisans linked to Studio Lotus and Bijoy Jain project precedent), Mumbai (Bijoy Jain Studio Mumbai network + independent decorative-finish specialists), Pondicherry (French-quarter restoration artisans who carry traditional lime-tadelakt skills), and Jaipur (heritage-haveli lime-craft artisans who adapt to LEINOS Vintage Finish 635). Book the artisan BEFORE the material order — artisan day-rate availability anchors the project schedule. Wrong applicator does not get rescued by the right material.
- Yes for limewash — it is the most approachable decorative mineral finish in the LEINOS system. A skilled architectural painter can produce specifier-grade limewash in a 16 m² Bangalore or Mumbai bedroom in one full day with the documented brush-stroke discipline (deliberate single-direction parallel strokes — cross-hatching ruins the register). Yes for pigmented plaster on the brush-application skill, but the pigment-dosing decision (Pigment 668 at 3–5% by weight in a single full batch, alkali-resistant shade only) is artisan-craft territory — engage an experienced lime artisan for the pigment batch even when the painter applies. Tadelakt and multi-tool vintage are artisan-only — no DIY path.
- Pigment Concentrate 668 carries 22 colours plus 2 pearlescent (Gold-Satin and Sterling-Silver). Indian heritage register reads beautifully across the alkali-resistant subset: Rajasthani saffron, Tamil oxide-red, Gujarati ochre, Goan indigo, dusty terracotta, warm-grey, deep-saffron — all documented for lime paint at 1–5% by weight. Custom shades are possible by mixing 668 colours within a single batch — for pastel tones, half white pigment + half coloured pigment is the documented approach. The 2 pearlescent shades cannot be inter-mixed and must dose into a single full batch for the whole wall. Single-batch discipline is non-negotiable; re-mixed second batches will not colour-match.
- Pricing scales with the register, not just with wall area. Limewash (Lime Paint 665 + Pigment 668) is the value-grade decorative path — material cost dominant, labour scales per square foot, broadly accessible. Bold pigmented plaster is meaningfully higher per-square-foot than pastel limewash because of the 3–5% pigment dose, but well below tadelakt. Tadelakt (Vintage Finish 635) and multi-tool vintage spatula (Vintage Wall Ground 631 + Scumble Filler 630) are artisan-day-rate work — premium art-craft pricing for a 12 m² feature wall including material. The pricing reality matches the visual reality: each register sits on a clear cost rung, and the design intent should match the budget tier.
- Decorative mineral finishes are FEATURE-WALL register, not wall-system register — they belong in accent zones, not in high-traffic scuff areas. Tadelakt is water-resistant once cured (7–14 d carbonation): Bangalore powder-room sinks and Mumbai entryway walls behind brass vessel-sinks work in the documented system, but continuous water-immersion (shower walls below the shower-head plane) is outside the documented case. Limewash and pigmented plaster are breathable but not condensation-rated — fine for living-room and bedroom walls, not for full bathroom interiors or kitchen behind cooktop. For whole-room daily-wipe walls, the Interior Walls solution with Natural Resin Emulsion 660 + Wall Wax 350 is the documented service-grade path. Refresh cycle on decorative work: re-burnish tadelakt every 3–5 years, refresh-coat limewash and pigmented plaster every 5–7 years.
Care & Maintenance
How to maintain a LEINOS-finished surface for the long haul — interior oiled floors, interior furniture and surfaces, exterior terraces and outdoor furniture.
Interior Oiled Floors
- Daily (or every other day) for ground-floor living areas: a damp-mop pass with Floor Milk 920 (10–30 ml per 10 L lukewarm water, no rinse) OR diluted Vegetable Soap 930 (10–15 ml per 10 L). Weekly during monsoon (Jun–Sep) and monthly otherwise: deep-wash with concentrated Vegetable Soap 930 (30–50 ml per 10 L) on the whole floor, then dry cotton-cloth wipe. Yearly (or every 18 months on lighter-traffic upper-floor rooms): refresh coat of Oil Refurbisher 285 wherever the water bead test fails — typically the sofa-to-kitchen arc and entry hall first. Upper-floor bedrooms: daily mop becomes every 2–3 days, deep-wash drops to quarterly, refresh to every 24–36 months.
- The visual check alone is not the diagnostic — the water bead test is. Drip water on the traffic lane (in front of the sofa, in the dining footprint, on the entry mat zone, on the stair-tread nosing). If water beads up for 60+ seconds the oil finish is intact and you can defer 285. If the bead collapses within 30 seconds and the wood darkens under the drop, that zone is due — 285 has to go back on before the wear cuts through the finish into bare fibre. Skipping a year-2 refresh on a worn zone means a year-3 full-room re-oiling job instead of a 1-hour spot refresh.
- Use the bottle-cap rule. 1 standard cap on the Vegetable Soap 930 bottle is roughly 30 ml. The deep-wash bucket is 1 full cap in a 10-litre bucket of water. The daily-wipe bucket is a quarter cap in 10 litres (a small splash). Floor Milk 920 is a quarter to half cap in 10 litres of lukewarm water. Keep the buckets in two different colours if possible — blue for deep-wash, white for daily — and label the caps. Show once with the cap visibly poured; the rule sticks. Never let undiluted soap or undiluted milk go directly on the floor.
- Lizol, Domex, phenyl, bleach, ammonia, vinegar-based DIY cleaners, any alkaline degreaser, any acidic descaler, and most commercial all-purpose tile cleaners. These strip the oil finish on contact — one accidental mopping with Lizol forces a 285 refresh within weeks because the protective oil layer is gone. If a housekeeper has been using them for months, expect the water bead test to fail across the room; plan a full 285 refresh as the first cycle, then start the gentle daily-and-weekly routine. Keep the harsh-cleaner shelf physically separated from the LEINOS care shelf to prevent mix-ups.
- Two weeks before the first rains, do a deep-wash with 930 concentrated and follow with a Floor Milk 920 pass — the wax-replenishing step lifts the floor's water-shedding ability for the wet season. During monsoon (Jun–Sep), the ground-floor deep-wash moves from monthly to weekly because mud, monsoon-grit, and damp footwear residue arrives daily. Keep a microfiber-mop and a dry cotton cloth at every entry point — wipe the area immediately after wet feet pass, never let standing water sit. Wet umbrellas go to a dedicated tray, never on the wood floor. Upper-floor rooms with windows that take wind-driven rain need the dry-wipe pass after each storm event. After monsoon (Oct), run a bead test across the room — if the entry-hall arc fails, schedule the 285 refresh for Diwali week.
- When the water bead test fails AND a 285 refresh on the worn zone does not restore the bead within a week, the finish has worn through into bare wood fibre. Visible cues: grey or blackened patches on the traffic lane (water-and-grit pressed into bare wood), splinters lifting at the board edge, sharp colour difference between the worn arc and the unworn perimeter that does not even out after a 285 coat. At that point the cycle has missed too many refreshes and the floor needs sanding back to bare wood (P80, then P120, then P150), then a full re-build with Hard Oil 240 or Hardwax Oil 290 from the Interior Floors & Stairs system — not maintenance care. The 920 / 930 / 285 routine prevents that outcome when run on schedule; once the floor is past it, only re-finishing brings it back.
Interior Furniture & Surfaces
- Pick by use frequency, not aesthetic. Daily-use horizontal tops (dining table, desk, breakfast counter): weekly 930 wipe + monthly 910 polish + yearly 285 refresh when water stops beading. Display furniture and open shelving (bookshelves, consoles, side tables holding lamps): monthly 930 wipe + quarterly 910 polish + 285 every 2–3 years on shelf-tops only. Wardrobes and closed cabinets: annual 930 inside + outside, quarterly 910 on the outside panels, 285 every 3–5 years on high-handle zones. Chairs and vertical frame elements: 930 as-needed for visible smudges, 910 annually during the pre-Diwali round, 285 every 5 years or post-scuff. The bead-test diagnoses each surface — drip water on the top, if it beads the finish is intact, if the wood darkens that zone is due for 285.
- Yes — the routine is staff-trainable. Demonstrate the dilution once (30–50 ml of 930 per 10 L bucket = roughly two tablespoons of soap into a full mopping bucket), the wiping motion (along the grain, damp cloth not soaking wet, no standing water on the surface), and the dry-buff step (separate clean cloth after the wipe). 910 polish is even simpler — pour a small amount onto a soft cotton cloth, apply in grain direction, buff. 285 refresh is the supervised step — its cure window (24 h light-handling, 7–10 days full cure) needs the household to plan around it. Staff handles the weekly + monthly cadence; owner manages the yearly refresh.
- No Harpic, no Lizol, no bleach, no kerosene, no ammonia, no acidic toilet cleaners, no strong household degreasers — the chemistry attacks the wax-and-oil network and over time bleaches the wood grain. No soaking-wet mops on horizontal tops — water sits in the grain and lifts the finish. No silicone-based furniture sprays from supermarket shelves — they leave a film that interferes with the next 910 polish or 285 refresh. No steel-wool or harsh abrasives. Stick to the 930 / 910 / 285 cycle plus a soft cotton cloth.
- A spot refresh with 285 is correct when the worn patch is localised — a glass-ring zone, a heel-of-the-hand worn spot on the desk, a 10–20 cm² area where water darkens the wood instead of beading. Sand lightly (P320) over the spot, apply 285 thinly, blend out to the surrounding intact finish, allow the 24 h light-handling window. A full re-oil with the original product (Hard Oil 240, Hardwax Oil 290, etc. — not 285) is needed when the entire top no longer beads water, the surface looks uniformly dull-and-thirsty, or there are deep scratches through the oil into bare fibre across multiple zones. At that point you are back in the Interior Furniture & Cabinets workflow, not in the care cycle.
- Open every wardrobe and cabinet weekly through monsoon (June–September) for 30 minutes to ventilate — sealed cabinet interiors trap humidity (RH 80%+) and grow musty. Wipe drawer interiors and shelf interiors with a 930-and-water cloth (30 ml per 10 L, well-wrung, not soaking) at the start and end of monsoon. Avoid placing damp clothes inside oiled cupboards — the moisture transfers and over time darkens the inside surface. Camphor blocks or neem leaves help with the musty smell traditionally; they do not damage the oil finish. If a wardrobe interior has visibly darkened from a one-time humidity event, apply 285 thinly to the affected interior panel — restores the water-bead and seals the fibre.
- Yes, in most cases without going to refinishing. First wipe the area with a slightly damp 930 cloth (30–50 ml per 10 L) and dry-buff with a clean cotton cloth — sometimes the ring is just water trapped on the surface and lifts off. If the ring remains, apply 910 Furniture Polish to a soft cloth and rub firmly in the grain direction over the ring for 60–90 seconds — the wax-and-oil chemistry often reabsorbs the white mark back into the finish. If the ring persists, the finish has been breached locally — sand lightly with P320 over the ring area, apply 285 thinly, allow 24 h light-handling. Prevention is easier than repair — coasters on a 910-polished daily-use top, wipe spills within minutes.
Exterior Terraces & Furniture
- Two main windows: pre-monsoon (April–May) and post-monsoon (October–November). Pre-monsoon — wash with Vegetable Soap 930, restore tone with Anti-Greying Fluid 940 if you see grey, then a single refresh coat of Terrace Wood Oil 236 before the rains arrive. Post-monsoon — wash, assess where water no longer beads, re-oil those zones only. Coastal sites (Goa, Mumbai, Chennai, Pondicherry) run the full cycle every 6 months instead of yearly — salt-air doubles the load. Mid-year (December–March) is for spot-care on high-wear zones (rail tops, table corners, planter bases) only — no full cycle needed.
- Greying within 12 months on Indian exterior wood is normal — the oil slows lignin photodegradation, it does not stop it. 940 is the expected response, not a panic product. Skip 940 only if the wood is still its original warm tone and you just need the seasonal wash + refresh oil. Apply 940 when you can visibly see silver-grey replacing the warm honey tone — typically on south-facing or open-sky boards, less on chajja-covered zones. Without 940 first, the 236 refresh coat locks in the grey colour instead of restoring the natural tone.
- Yes — coastal locations (Goa, Mumbai, Chennai, Pondicherry) run a 6-monthly micro-cycle instead of the inland annual cycle. Salt-air carries fine NaCl crystals that bond with morning dew on the wood surface and accelerate both oxidation of the oil and lignin breakdown of the wood. The practical rule: halve the inland interval. Inland Bangalore deck = annual refresh; Goa beach deck = April + October refresh, with a spot-treat in between if visible greying appears. Same products, double the frequency.
- No — solid oil-finished wood survives a missed pre-monsoon window. Recovery protocol: wait until October–November when the wood is dry below 14% moisture (measure with a pin meter — coastal sites may need 5–7 days post-monsoon to reach this). Wash with Vegetable Soap 930 plus a stiff brush to remove algae, dirt, and mildew bloom that accumulated. If visible greying or dark patches show, apply Anti-Greying Fluid 940 spot-treat or full coverage as needed. Then apply a single refresh coat of Terrace Wood Oil 236. If the wood feels soft or shows splits (not just colour change), that is structural damage — route to Exterior Terraces & Decking solution for sand-back and full re-oil instead of maintenance care.
- Refresh stops being enough when (a) water no longer beads anywhere on the surface after a 930 wash + 940 + 236 cycle, (b) the wood feels soft, fluffed, or fibrous to the touch, or (c) visible splits run along the grain wider than 1 mm. At that point the original finish is exhausted and the wood fibre itself is compromised. Route to the Exterior Terraces & Decking solution (decks, boardwalks) or Exterior Outdoor Furniture solution (chairs, tables, planters) for the first-install protocol: sand back to bare wood (P80–P100), then 2 coats of 236 wet-on-wet (or Teak Oil 223 for dense tropical hardwood). Maintenance care here resumes the year after.
- Two questions decide. First — is the wood structurally solid? Push a screwdriver into the worst-looking spot; if it resists firmly, the wood is sound. If it sinks in, the bench is for replacement. Second — are the cracks narrow (under 1 mm) or wide (over 2 mm)? Narrow cracks fill with the 236 refresh coat naturally. Wide cracks need wood filler before any oil goes on (use a colour-matched exterior wood filler). For a sound-but-grey bench: scrub with Vegetable Soap 930, apply Anti-Greying Fluid 940 with 30–60 min contact time (longer for heavier grey), rinse thoroughly, dry 1–2 days, then apply 2 thin coats of Terrace Wood Oil 236 (refresh plus recovery — exception to the single-coat annual rule). Plan it as a weekend job.
Trust & Ingredients
Certifications, standards, and the natural ingredients behind every LEINOS product.
Certifications & Standards
- Yes — for the specific products LEINOS publishes a test report on. The strongest published evidence is for LEINOS 280 Countertop Oil, which carries a dated food-contact compliance certificate from WESSLING GmbH (report CAL24-0568511, valid through 29 July 2026) issued against §31 LFGB and EU Regulation 1935/2004 Article 3 — the EU framework for materials intended to contact food. The cured 280 film has been tested by a German-accredited food-chemist laboratory for migration of substances into food simulants, on a specified application (wood worktops, cutting boards), with a defined expiry date. Other LEINOS oils may carry similar reports — request the dated report number per product before specifying. (Project memory referencing "BfR XXXVI for food-contact wood" is a mis-attribution: BfR XXXVI scope is paper and board, not paint on wood.)
- EN 71-3 covers nineteen specified elements: aluminium, antimony, arsenic, barium, boron, cadmium, chromium (III), chromium (VI), cobalt, copper, lead, manganese, mercury, nickel, selenium, strontium, tin, organic tin and zinc. The test simulates ingestion: a defined material sample is held in artificial gastric acid (hydrochloric acid at 0.07 mol/L, 37 °C, 1 hour) and the extract is measured by ICP-MS or ICP-OES against migration limits in the standard. Three material categories apply — Category III (scraped-off material) is the one a wood-finish on a child's surface is tested as. EN 71-3 says nothing about organic toxicants, sensitisers, VOC emissions or mechanical hazards — those are covered by other parts of the EN 71 series and by separate standards.
- Neither, in the way the question is usually meant. BfR Recommendation XXXVI is a German recommendation, not a certification — and its scope is paper and paperboard for food contact, not paint coatings on wood. It is issued by the Bundesinstitut für Risikobewertung as advice on which substances are acceptable in paper food-packaging materials under §31 LFGB. It is not a stamp a manufacturer applies for and it does not apply to wood finishes. The correct certification chain for a LEINOS food-contact wood oil runs through EU Regulation 1935/2004 (the EU framework), LFGB §31 (the German implementation), and a dated test report from an accredited German laboratory (e.g. WESSLING).
- The answer depends on the certification type. DIBt national technical approvals (abZ) are issued for a fixed period — typically five years — and renewable only after re-audit by the issuing body. Batch-specific food-contact reports (WESSLING for LEINOS 280) carry a stated expiry date on the certificate face: the WESSLING report cited on this page expires 29 July 2026. Type tests against EN 71-3 / DIN 68861 / DIN 53160 are not on a regulator-mandated schedule, but ISO 9001 quality-management requires re-testing on any formulation change. AgBB chamber tests are triggered whenever a DIBt approval is renewed. The line in practice: every cert has a useful life; the brand-side discipline that keeps cert claims honest is ISO 9001 plus the InVeNa full-disclosure pledge.
- There is no direct one-to-one mapping. India's Bureau of Indian Standards publishes IS 15489 for emulsion paints, and the CPCB regulates industrial VOC emissions — but no Indian standard currently equates to the German AgBB emission scheme or the DIBt abZ for floor coatings. Where Indian green-rating systems take over — IGBC (Indian Green Building Council) and GRIHA — emission-tested products against AgBB or equivalent are accepted for indoor-air-quality credits, on the same basis BREEAM and LEED v4.1 accept them. A LEINOS product carrying DIBt, ift Rosenheim or ihd Dresden documentation translates into points in those Indian rating systems. For non-rated public-sector tenders in India, the EU-side test trail is currently the strongest available; an Indian-side equivalent does not yet exist for natural-paint formulations.
- No, and any certificate that says it does should be read with suspicion. A test certificate is a measurement of a defined sample, on a defined date, against a defined method, for defined substances. EN 71-3 measures migration of nineteen specified elements — passing it tells you nothing about a substance not on the list. DIN 68861-1A tells you the surface survives 26 household chemicals; it tells you nothing about the wear-layer dust at year ten. Even a comprehensive AgBB chamber test ends at day 28 — it tells you the product is below the room threshold then, not over the building's lifetime. The honest reading: a stack of independent reports against tight, well-chosen methods is the strongest evidence available short of an in-situ measurement of the actual room. It documents the floor. It does not promise the ceiling. Documented, not claimed is the architecture of trust, not a substitute for it.
Linseed Oil
- Cold-pressed linseed oil itself is approved as food (US-FDA GRAS). A cured linseed-oil paint film made for wood finishing is not certified as a food-contact surface unless the specific product TDS states it — for example, LEINOS Countertop Oil 280 is third-party tested by WESSLING GmbH (certificate CAL24-0568511) for compliance with EU Regulation 1935/2004 and the German LFGB §31 food-contact law. Always check the product TDS.
- Linseed oil hardens by reacting with atmospheric oxygen, not by evaporating solvent. The cure is slower (24–48 hours per coat, longer in monsoon humidity) but the resulting film is flexible, breathable, and repairable coat-on-coat. Polyurethane evaporates and films fast, but once it fails it must be removed entirely.
- No. Linseed-oil-based finishes wear by surface chalking — a fresh coat keys into the existing film without sanding the old layer away. This is the structural reason heritage timber and oiled floors are restorable for decades.
- LEINOS uses cold-pressed linseed oil at paint-binder grade, not at culinary grade. The starting material is the same plant and the same pressing method; the downstream processing (boiling, additive of drying catalysts where used) is product-specific and disclosed on each TDS.
- Lay them out flat outdoors to dry completely, or submerge in water before disposal. Never crumple them in a bin — oxidation is exothermic and trapped heat can ignite. This is the only meaningful safety hazard around the oil itself.
- Slightly, yes — most under low daylight (north-facing rooms, closets). On dark wood the shift is invisible. For pale wood applications, LEINOS calibrates specific products to limit yellow drift; choose by product TDS, not by raw oil.
Carnauba Wax
- Yes — under both major regulatory frameworks. The US-FDA affirmed carnauba wax as GRAS in 1983 (21 CFR 184.1978) with no use limitation other than current good manufacturing practice. The EU lists it as food additive E 903, and JECFA set an Acceptable Daily Intake of 0 to 7 mg/kg body weight in 1992. A cured paint film containing carnauba is a different matter — its food-contact status is governed by the product-specific TDS (LEINOS Countertop Oil 280 is WESSLING-tested for compliance with EU Reg. 1935/2004 + LFGB §31, certificate CAL24-0568511), not by the wax ingredient alone.
- Chain length. Beeswax esters average around C40 and melt at ~62–65 °C; paraffin runs C20–C40 and melts ~46–68 °C; carnauba esters average around C50 and melt at 80 to 86 °C (DSC peak ~84 °C). The longer, more regular aliphatic chains pack tighter, take more energy to melt, and resist abrasion better. This is what makes carnauba the universal hardener in any wax system that has to take wear — wood floors, car polishes, food glazes.
- Yes — and they are documented. The Brazilian Ministry of Labour, Repórter Brasil and the BBC have reported repeated rescues of workers in carnauba fields under conditions analogous to slavery, with 114 rescues in 2023 alone, a nine-year high. In response, processors, brands and NGOs founded the Initiative for Responsible Carnauba (IRC) in 2018, hosted by UEBT, requiring traceability, third-party verification and absence from the Brazilian Lista Suja. LEINOS sources through European processors participating in IRC. The category-level issue is real, and we name it openly rather than hide behind brand silence.
- Comfortably. Carnauba's melting range is 80 to 86 °C — well above any habitable ambient or applied surface in India, including a sun-exposed terrace deck in Rajasthan or a Delhi summer worktop. A cured hardwax-oil film remains structurally solid at 45 °C and shows no softening or migration. The beeswax fraction (mp ~62–65 °C) also stays well above ambient. This is one of the practical reasons carnauba is preferred over softer waxes in tropical-climate finishes.
- A wear layer. A cured linseed-oil film is durable, flexible and repairable but relatively soft — chair-leg torque, footfall and abrasive grit will dull it within months on a high-traffic surface. Carnauba co-melts with the oil and crystallises as it cures into a microscopic hard-wax matrix that takes the surface abrasion before the oil binder is touched. A peer-reviewed study in Forests (MDPI, 2020) showed that combining epoxidised linseed oil with carnauba on poplar wood raised water contact angles to 120° and physically blocked pits and ray cells — gains neither material achieved alone.
- Very little, compared with the linseed oil it is paired with. The yellowing of a hardwax-oil film is driven mainly by the drying-oil component — autoxidation of unsaturated fatty acids produces chromophores that shift the cured film toward yellow-green, especially in low light (north-facing rooms, closets). Carnauba's long aliphatic esters are largely saturated and do not participate in that oxidation pathway. On a hardwax-oil floor the wax is not the yellowing agent; the oil is. Choose products LEINOS has calibrated for low yellow-drift on pale woods, per the individual TDS.
Beeswax
- No. Beeswax is an animal product, secreted by Apis mellifera worker bees and harvested from honeycomb. By the strictest reading it is not vegetarian either, although the European Vegetarian Union accepts honey and wax in lacto-ovo diets as a matter of practice. For projects with a fully vegan brief, LEINOS hardwax-oil 290 and adjacent oil-wax products are not the right specification. The honest alternative on the LEINOS catalogue is the oil-resin chemistry family (exterior oils such as 236), which uses linseed oil and natural resins with no animal-derived wax. We do not hide the ingredient and we will not relabel an animal-derived material as plant-based.
- Different role. Carnauba (mp 80 to 86 °C) is the wear layer — it takes abrasion. Beeswax (mp 62 to 65 °C, mean 64.3 °C in Tulloch's 80-sample Canadian dataset) is softer and shorter-chained, average ester C44 versus carnauba's C50, and contributes three things carnauba cannot give on its own: a silk-matt sheen that re-buffs by hand, a plasticised film that flexes through humidity cycles instead of cracking, and breathability. The cured surface stays permeable to water vapour, so a beeswax-bearing floor can release trapped substrate moisture. Pavlič et al. in Coatings (MDPI, 2021) document this linseed-oil-plus-carnauba-plus-beeswax triplet as the canonical hardwax-oil recipe.
- Yes, under both major regulatory frameworks. The US-FDA affirmed beeswax as GRAS in 1978 under 21 CFR 184.1973, covering both yellow (CAS 8006-40-4) and white (CAS 8012-89-3) as flavouring agent, lubricant, and surface-finishing agent at GMP levels. The EU lists it as food additive E 901, and the 65th JECFA in 2005 concluded "no safety concern at the predicted dietary exposure of less than 650 mg per person per day." A cured paint film containing beeswax is governed by the product-specific TDS — LEINOS Countertop Oil 280 is WESSLING-tested for compliance with EU Regulation 1935/2004 and the German LFGB §31 (certificate CAL24-0568511), not by the wax ingredient alone.
- Yes, and they should be named. Three issues recur. First, routine re-queening — conventional commercial beekeepers replace the queen every one to two years by killing the old queen; organic standards (Demeter Biodynamic, Naturland) prohibit lethal queen replacement and require natural swarming. Second, Colony Collapse Disorder — a multifactorial syndrome with 28 to 36 % annual winter colony losses in the US since 2006; the USDA-ARS action plan lists migratory stress and monoculture forage among the suspected immune-suppressing factors. Third, migratory pollination — bees transported thousands of miles to pollinate single-crop farms. LEINOS sources beeswax from European apiarists working under organic standards or equivalent.
- Comfortably. Beeswax's melting range is 62 to 65 °C — far above any habitable ambient or applied surface in India. A worktop in Delhi summer reaches 45 °C in extreme cases; a sun-baked terrace in Rajasthan rarely exceeds 55 °C. Both stay well below the wax's melting threshold. The cured hardwax-oil film remains structurally a solid wax-oil composite, with no softening, no migration and no visible bloom even after years of tropical heat cycling. The harder carnauba fraction (mp 80 to 86 °C) sits even further above ambient. It is in fact the wax's tolerance of warm continental and tropical summers that drove its historical use across Southern Europe, North Africa and the Middle East.
- Three things — plasticisation, breathability, and buffability. Plasticisation because beeswax's shorter average ester chain (C44 vs carnauba's C50) and lower crystallinity co-melt with carnauba into a flexible composite that flexes through humidity cycles rather than cracking. Breathability because the beeswax-bearing film stays permeable to water vapour — the same property that lets a heritage encaustic painting survive two thousand years without spalling. And buffability because the softer crystal structure lets the cured surface take a soft cloth and re-set into a silk-matt sheen with hand pressure — the structural reason beeswax-bearing floors and furniture are restorable season by season without sanding off the previous film.
Shellac
- No. Shellac is an animal-origin material — a resin secreted by the lac insect Kerria lacca and harvested with the colonies still embedded in the resin. Published estimates put insect mortality at 50 000 to 300 000 insects per kilogram of finished shellac, depending on harvest method. Under the Jain principle of ahimsa, which extends non-violence to all sentient life including insects, shellac is also not Jain-compliant in the strict reading. Buyers requiring a vegan or Jain finish should specify a plant-protein alternative such as Zein (corn-derived) or ask LEINOS for the linseed-and-wax route, which is fully plant-and-mineral. We do not present shellac as plant-derived.
- The overwhelming majority comes from India. India produces roughly 20 000 tonnes of raw lac (sticklac) per year — at least half of global output, and historically as much as 90 % during the World War I peak. Cultivation is concentrated in the tribal-majority states of Jharkhand (~39 % of national production), Chhattisgarh (~30 %), Madhya Pradesh, Odisha and West Bengal, supporting an estimated three to six million rural households. The central public-sector research body is ICAR-IINRG (Indian Institute of Natural Resins and Gums) in Ranchi, founded in 1924. Of every ingredient in the LEINOS natural-paint vocabulary, shellac is the most native to the Indian home market.
- Yes, under multiple international regulatory frameworks. The US-FDA lists purified shellac as a colour additive (21 CFR 73.1) and as an indirect food-contact substance for resinous coatings (21 CFR 175.300 / 175.380 / 175.390). The EU lists it as food additive E 904 at quantum satis in eleven food categories. JECFA evaluated bleached shellac in 1992 as "Acceptable" for use as a coating, glazing and surface-finishing agent externally applied to food. In 2024 EFSA derived an Acceptable Daily Intake of 4 mg/kg body weight per day for wax-free shellac on a NOAEL of 400 mg/kg bw/day. A cured paint film containing shellac is governed by the product-specific TDS — not by the raw resin alone.
- Three reasons. First, shellac seals knots and tannin bleed from resinous woods (pine, redwood, mahogany, teak) in a single thin coat — an alcohol-borne barrier that locks resin extractives in before the next coat can pull them up. Second, it cures fast — touch-dry in 15 to 30 minutes — so the carpenter can move on the same morning, where a linseed-oil coat needs 24 to 48 hours. Third, a cured shellac film is reversible — re-dissolvable in fresh ethanol — so it can be repaired or refreshed coat-on-coat without stripping the substrate. A polyurethane primer, once it fails, has to come off entirely. Shellac stays serviceable for a century.
- Heat is not the constraint. Shellac softens at around 75 °C and melts only at ~120 °C, well above any habitable Indian surface temperature including a sun-exposed worktop or a terrace deck in Rajasthan. The real cautions are different. Shellac is sensitive to prolonged direct water contact (the film softens) and to strong alkalis (which dissolve it) — so it is unsuitable as a top film over a sink, a bathroom floor, or anywhere routine cleaning involves caustic products. The peer-reviewed Polymers paper by Yan and colleagues (2021) confirms the thermal window and notes the ageing pathway: free aleuritic acid slowly self-esterifies as the film matures, raising glass-transition temperature and reducing solubility.
- It is real and supported by ICAR-IINRG data. Cultivation occurs on roughly 4 to 6 million smallholdings, predominantly tribal households in central and eastern India who farm lac as a cash crop alongside subsistence agriculture. ICAR-IINRG documents per-tree yields of 6 to 10 kg on kusum, 1.5 to 6 kg on ber and 1 to 4 kg on palash, with two crops per year (kusumi: aghani in winter + jethwi in summer; rangeeni: katki in monsoon + baisakhi in summer). A successful lac crop can lift a household income from ~₹20 000 to ₹65 000+ annually — documented in Tata Trusts case studies in Jamtara, Jharkhand. The carbon co-benefit is real too: lac requires healthy host trees to be left standing, which incentivises preserving rather than felling palash and kusum.
Dammar Resin
- It depends on the supply chain — and right now, mostly no. Dammar comes from Shorea trees, the same Dipterocarpaceae family that supplies Southeast Asia's tropical-hardwood timber trade. The traditional sustainable model is the Krui repong damar agroforest in West Lampung, Sumatra — a planted forest tapped non-destructively for resin over two human generations. But RECOFTC and FAO report that this repong damar area has shrunk from roughly 29 000 hectares in 1998 to about 6 500 hectares in 2022, mainly under pressure from oil-palm conversion and a 2008 re-classification that downgraded community rights. FSC and PEFC schemes do certify resins as non-timber forest products in principle, and Indonesia has a PEFC-endorsed national scheme (IFCC), but a dammar-specific chain-of-custody system is not yet mainstream.
- Indonesian dammar accounts for more than 90 % of world supply, and the most commercial grade — damar mata kucing, "cat's-eye dammar" — comes from Shorea javanica in the Krui agroforests of Pesisir Barat, West Lampung province, Sumatra. LEINOS procures dammar through European resin processors who source predominantly from this region. We are conservative about origin claims: where the resin is Shorea javanica from Krui repong, we say so; where it is mixed-grade trade dammar of less specific provenance, we say that instead.
- No, not in the broad sense. Dammar has a US Pharmacopoeia / Food Chemicals Codex monograph that permits narrow food-glaze and clouding-agent uses, but it has no EU E-number, no JECFA Acceptable Daily Intake, and is not on the EU list of permitted food additives. For food-contact wood — cutting boards, worktops in food preparation — choose LEINOS Countertop Oil 280, which is third-party tested by WESSLING for compliance with EU Regulation 1935/2004 and the German LFGB §31 (certificate CAL24-0568511), not the dammar-containing varnish line. The dammar in a LEINOS varnish is paint-grade, not food-grade. The clean compositional disclosure is more honest than ambiguity.
- Three reasons, in honest order. Optical depth — a triterpene-resin film over an oil-bound substrate refracts light deeper into the wood grain than a pure-oil film or a polyurethane film can. Reversibility — a dammar film remains preferentially soluble in turpentine and mineral spirits even after decades of natural ageing, so the finish can be cleaned and refreshed coat-on-coat without sanding the previous layer to dust. Continuity — dammar has been the reference natural picture varnish for 200 years; the chemistry is understood end-to-end. The trade-off is real: modern synthetic ketone resins (Regalrez 1094, Laropal A81, MS2A) outperform dammar on long-term clarity. We choose the natural resin for the natural-paint canon.
- Yes — slightly, slowly, characteristically. The triterpenes that give the film its gloss-depth oxidise over decades into chromophores that shift the cured varnish toward yellow-green. Research in Journal of Cultural Heritage (Elsevier, 2009) confirms this autoxidation proceeds in both light and darkness, slowed but not stopped by dark storage. On dark-toned woods — oak, teak, walnut — the yellow shift sits inside the natural tonal range and reads as patina. On pale or bleached woods choose a hardwax-oil rather than a triterpene-resin varnish; the wax-and-oil films yellow less. The honest framing is: the varnish matures with the wood, it does not stay optically frozen at coat-on day.
- Linseed oil cures into a flexible, breathable, repairable film that is, on its own, relatively soft and relatively matt. Dammar adds two things the oil cannot supply by itself. First, surface hardness and gloss-depth — the triterpene resin co-cures into the oxidising oil network and contributes a harder, glossier surface that takes light deeper into the grain. Second, selective solvent reversibility — the cured varnish remains preferentially soluble in non-polar hydrocarbons even after decades of ageing, so the surface can be cleaned and refreshed without disturbing the oil layer below it. The two materials are complementary: oil binds and penetrates, resin hardens and refracts.
White Clay
- The mineral is GRAS in the United States as an indirect food substance — used as a constituent of paper and paperboard in food packaging under 21 CFR 186.1256, with no limitation other than current good manufacturing practice. In the European Union kaolin was historically the direct food additive E 559 (anti-caking agent in instant coffee, milk powder, spices) but was revoked on 31 January 2014 under Regulation 1129/2011 — not because of an acute toxicity finding, but because EFSA's 2013 assessment concluded that combined dietary intake of aluminium from aluminium-silicate additives exceeded the provisional tolerable weekly intake. Kaolin remains cleared in the EU for cosmetics, pharmaceuticals (Kaopectate), pigments, paints and ceramics. The mineral has a centuries-long pharmacopoeial track record of low toxicity.
- LEINOS is a German manufacturer formulating in Lower Saxony; the company sources processed kaolin from European industrial-mineral suppliers. The dominant European processor base draws from Cornwall (UK), Czechia and Germany itself — those, together with the U.S. Georgia district and the Kerala (India) deposits, account for the majority of world production. The Kerala deposits at Trivandrum and Kollam are graded by the Kerala Department of Mining and Geology at about 96 % kaolinite — "world-class" by the department's own description — and India ranks among the world's leading kaolin producers, accounting for an estimated 19 % of world production (USGS Minerals Yearbook 2023). For LEINOS India, the specific supply line is processed in Europe; the deposit class is the same chemistry as the Kerala-mined material.
- Three things — and all three matter at the architectural scale. Breathability: kaolinite-bearing clay paints typically run SD-values below 0.05 m, often as low as 0.02 m. A standard acrylic exterior paint runs an SD of 1 m or more — two orders of magnitude less permeable. On a lime-plastered wall this is the difference between a wall that absorbs and releases humidity and a wall that traps moisture behind a polymer film. Mineral compatibility: kaolinite is chemically inert across the relevant pH range, including the high-alkaline environment of fresh lime, so it co-exists with lime, silicate and casein binders without re-reacting. No synthetic processing: the material is mined, washed, kilned optionally and milled — there is no monomer chemistry, no polymerisation, no off-gassing of unreacted volatiles to track.
- Like all open-pit mining, kaolin extraction is landscape-altering — that is the honest line. In India, every kaolin lease operates under the Mineral Conservation and Development Rules (MCDR 2017) and is required to submit an approved Mining Plan with post-mining rehabilitation commitments. At the international voluntary level, the Initiative for Responsible Mining Assurance Standard v.1.0 (2018) covers all industrial-scale mining of all mined materials except energy fuels — kaolin is in scope. IRMA's site-level audits (IRMA 50/75/100) are currently the most demanding cross-commodity responsible-mining framework available. Compared with the documented forced-labour issue in carnauba (Brazilian Northeast, 114 workers rescued in 2023 alone), industrial kaolin mining is not associated with a category-wide labour-rights crisis. But the mining footprint is real, and the responsible position is to say so.
- Distinguish carefully — this is the specifier-grade nuance most worth getting right. Kaolinite itself — Al₂Si₂O₅(OH)₄ — is a hydrated aluminosilicate sheet mineral, not free crystalline silica. It is not on the IARC silicosis-causing list. OSHA sets a Permissible Exposure Limit of 15 mg/m³ total dust and 5 mg/m³ respirable fraction for kaolin containing no asbestos and less than 1 % crystalline silica (8-hour TWA); ACGIH recommends 2 mg/m³ respirable; the ILO–WHO International Chemical Safety Card ICSC 1144 covers the same condition. Above 1 % crystalline-silica content, kaolin processing is treated under the quartz-dust rule, which is significantly stricter. Cases of kaolinosis (a mild restrictive pneumoconiosis) are documented in Georgia kaolin-processing workers from prolonged occupational exposure — not from applied paint films on walls.
- Different mechanism and different system fit. Titanium dioxide (TiO₂) delivers very high opacity per gramme but is a synthetic-processed pigment mined as ilmenite or rutile, with a significant industrial footprint and ongoing EU regulatory scrutiny (CLP carcinogenicity-by-inhalation Cat. 2 listing in 2020, partially annulled by the EU General Court in 2022). Calcined kaolin delivers about 60 to 70 % of TiO₂'s hiding power per equal volume in many opaque interior paint applications and is widely used as a partial replacement. Calcium carbonate (CaCO₃) is also a mineral filler but is acid-reactive — it dissolves in low-pH environments — which limits it on substrates with monsoon-driven acidic deposition. Kaolinite is inert across the relevant pH range, mineral-compatible with lime and silicate binders, and pseudo-hexagonal-platelet shaped for high covering power — the canonical breathable-paint filler.
Dealer & Partnership
Becoming a LEINOS authorised partner in India — investment, territory, training, timeline.
- There is no franchise fee. Partnership cost is the opening stock order — sized to your region and the projects you plan to serve. Most partners start with a working inventory across the core wood-finish and mineral-paint range. The exact figure is agreed during the second-round conversation, after we understand your business and territory. We work with established retailers, contractors, and design studios at a range of scales — there is no single number.
- Yes — for committed partners. Territory size is calibrated to local market density and your business capacity (a Mumbai sub-district looks different from an entire tier-2 city). Exclusivity is granted in writing as part of the onboarding agreement and protects you from another LEINOS dealer being appointed in the same area for the agreed term, contingent on minimum activity.
- LEINOS India is the official brand portal for the country — pricing and architect-grade enquiries are routed through us. Authorised partners may take orders through their own website / WhatsApp / showroom within their territory, at LEINOS-aligned pricing. Listings on third-party marketplaces (Amazon, Flipkart, IndiaMART, etc.) are restricted to protect the spec channel and avoid price erosion across territories.
- Training is complimentary for active partners. The LEINOS India technical lead conducts on-site or video training sessions for your sales team and for crews you work with — covering substrate prep, application protocol, drying windows, system pairings, and how to answer the most common architect questions. Additional walkthroughs on live projects are available on request, no charge.
- Print and digital marketing pack — product brochures, shade swatches, sample boxes (A4 finished panels), Technical Data Sheets (TDS), Safety Data Sheets (SDS), certification stamps, and high-resolution product photography. Partners also receive their dealer listing on the official LEINOS India site once the territory is active.
- Typical timeline from application to first sale: 3–6 weeks. Week 1 — application review and conversation. Week 2 — territory agreement and stock order. Week 3–4 — stock ships from our Delhi warehouse, training scheduled. Week 4–6 — training complete, marketing material in hand, you begin specifying LEINOS for live projects in your region.
- No. Many LEINOS partners stock complementary ranges — that is healthy and expected. LEINOS occupies the premium natural-finish slot in your line-up, not the mass-market slot. We ask that LEINOS is given fair shelf and showroom visibility, not exclusivity of your business. Direct competitors in the natural-finish premium register are discussed case-by-case during onboarding.
Buying & Samples
Where to buy, how to order samples, pricing model, downloads, and technical support.
- LEINOS is available through our network of authorised dealers across India. Use our Find a Dealer page to locate the nearest stockist, or Talk to LEINOS and we will recommend a dealer based on your project location, surface, and quantity requirements. For large projects (commercial, hotel, institutional), our team can also coordinate direct supply.
- Yes. Architects, designers, and specifiers can request sample panels and small-format product samples through the Talk to LEINOS form — mention the products, colours, and surfaces you are evaluating. Samples are typically dispatched within 5 business days [VERIFY lead time with LEINOS India team] and shipped to your studio or project site. For colour evaluation, we also send physical wood-finish swatch panels rather than digital images alone.
- LEINOS operates as a brand portal, not an e-commerce store. Pricing varies by dealer location, pack size, project quantity, and applicable taxes — so the most accurate quote always comes from your local authorised dealer. For specifier and large-project pricing, Talk to LEINOS and our India team will share a structured quote within 24 business hours.
- Every product page on this site includes downloadable TDS in English under the "Downloads" section. SDS are available on request via Talk to LEINOS — we send the latest signed PDF directly. [VERIFY whether /downloads/tds/ directory is publicly indexable.] For consolidated specifier packs (TDS + SDS + certifications + spec text), see For Professionals.
- LEINOS is stocked at authorised dealers in major Indian metros and Tier-1 cities [VERIFY current dealer footprint]. Typical dealer-to-site lead times are 2–5 business days within the dealer service area. For locations without a nearby dealer, our team can arrange direct dispatch from the India warehouse — typical lead time 7–10 business days [VERIFY]. Talk to LEINOS with your project pin code and we will confirm exact lead time and routing.
- Yes — when used as directed and fully cured. LEINOS finishes are formulated from linseed-based natural oils, plant resins, beeswax, and mineral pigments — no acrylics, formaldehyde, or solvent thinners. Specific products carry EN 71-3 (toy safety, heavy metals migration) and DIN 53160 (saliva and perspiration resistance) certifications, which apply to children's furniture and toys; see the certifications on the relevant product page. For food-contact wooden surfaces (cutting boards, butcher blocks), LEINOS 280 Countertop Oil is the recommended finish — see /products/prod-280. Full ingredient transparency: /natural-paints.
- LEINOS products are formulated in Germany and meet the following European standards where applicable: EN 71-3 (toy safety), DIN 68861-1 (wood surface resistance), DIN 53160 (saliva/perspiration), DIN EN 927 (exterior wood coatings), and EU Decopaint Directive 2004/42/CE (VOC content). [VERIFY which Indian IS marks apply to which SKUs.] The full certification chain — what each cert means, the testing institute, and per-product certificate IDs — is documented at /natural-paints/certifications-standards.
- Conventional paint binders are typically acrylic, alkyd, or polyurethane — petrochemical polymers requiring solvent thinners and emitting volatile organic compounds (VOCs) during cure and over their lifetime. LEINOS finishes use plant-based binders (boiled linseed oil, natural resins, beeswax) and mineral fillers (chalk, marble powder, slaked lime, titanium dioxide). No formaldehyde, no isocyanates, no acrylic resins, no solvent-borne thinners. Full breakdown: /natural-paints/natural-vs-synthetic [pending publication — Trust Hub Chapter 3].
- LEINOS 668 Tinting Concentrates and select mineral paint products (lime, silicate) can be tinted on-site by authorised dealers to NCS reference codes and similar systems. The pre-defined LEINOS palette covers 244 shades across 10 collections (see /colours). For a specific NCS or Pantone reference, Talk to LEINOS with the code — we will confirm whether it can be matched with our tinting system and which base product to use. Note: custom-tinted mineral paints have different application characteristics than pre-mixed shades — your dealer or specifier will advise.
- Yes. For architects, designers, contractors, and large project sites, the LEINOS India team offers: pre-specification consultation (product selection for your substrate, climate, and end-use); on-site application training for contractors handling LEINOS for the first time [VERIFY regional availability]; mock-up panel approval before full project commitment; and post-application care guidance and re-coat scheduling. Talk to LEINOS to schedule — mention project size, location, surfaces, and timeline.
Still have questions?
Our India team responds within 24 hours on business days. Architects, contractors, and homeowners welcome.