Hard Oil
Penetrating oil finish for absorbent interior surfaces
View product detailsWood Surfaces · Solutions
Interior Wood
Every interior wood surface in an Indian home — table top, drawer interior, child's toy, hallway skirting, study floor, panel door, white-painted window frame — needs a finish picked for its specific wear pattern, not for a generic "interior wood" label. The LEINOS interior wood set is 14 products organised into six application families, all built on the same linseed-and-natural-resin ingredient core. One ingredient family, surface-driven chemistry, decision tree by surface type. This page routes you to the right family.
InteriorSingle Layer14 compatible products
- One linseed-and-natural-resin family across 14 SKUs
- Surface-driven chemistry — picked by use, not aesthetic
- Breathes through Indian monsoon humidity
- Re-oilable and spot-repairable — no full strip
Find your application
Pick the substrate. We'll show what fits.
Wardrobes, shelving, freestanding tables, desks, sideboards, built-in cabinets. The two-product canon (Hardwax Oil 290 on horizontal tops + Hard Oil 240 on frames and cabinet panels) lives here. Sheesham wardrobes in Mumbai bedrooms, teak dining tables, Burma teak study desks — all routed through this family. For the complete per-surface decision matrix, application sequence, and TDS-grounded coat counts, see the dedicated Interior Furniture & Cabinets sub-route page.
4 compatible productsInterior Hardwax Oil
Hardwax oil for durable protection and finishing of interior wooden surfaces.
View product detailsHard Oil Clear
Non-yellowing, durable primer and topcoat for unstressed interior wood surfaces, particularly in furniture manufacturing. Also suitable for cork and stoneware.
View product detailsHard Oil Universal
Versatile universal primer and topcoat for all interior wood types. Enhances natural wood structure with silky matte, durable, water-repellent finish.
View product detailsSystem & Substrates
Fourteen interior wood SKUs, six surface families. Decision tree by surface.
For specific surfaces, enter the substrate tabs above or visit the dedicated sub-route page — each tab routes to the per-surface decision matrix and full application sequence.
Topcoat Options
Choose the finish character; the primer underneath stays the same.
Long-term Care
Extends the life of the finish over the years.
Step by Step
How to Apply
Surface preparation
Ensure the substrate is dry, clean, grease-free, dust-free, and absorbent. Sand wood surfaces in grain direction: Hard Oil 240 — 150–180 grit; Hardwax Oil 290 — minimum 120 grit; Hard Oil Universal 259 — 150–180 grit. Hard Oil Clear 241: surface must be dry, firm, absorbent, resin- and dust-free. Remove all sanding dust. Temperature above 15°C.
First oil application
Apply a thin, even coat along the grain. Tools by product: Hard Oil 240 — brush, roller, spray, or dip; Hardwax Oil 290 — short-nap sealing roller or mop, applied thinly and evenly; Hard Oil Clear 241 — brush, roller, or spray. Apply thinly — excess oil sitting on the surface will not dry properly.
Remove excess oil
Hard Oil 240: wet-on-wet method — apply second coat after 20–30 minutes. Remove excess carefully 30 minutes after the final coat. Hard Oil Clear 241: same wet-on-wet method (20–30 min), remove excess after 30 min. Hardwax Oil 290: remove excess after 15–20 minutes and work in with a green pad.
Drying period
Hard Oil 240: dust-dry 10–12 hours, recoatable 16–24 hours. Hardwax Oil 290: dry to touch 6–12 hours, recoatable after 16–24 hours. Hard Oil Clear 241: dust-dry approx. 8 hours, recoatable after 16–20 hours. Hard Oil Universal 259: dust-dry 6–8 hours. Use a fan for air circulation during drying.
Second coat and finishing
Apply at least two coats for all products. Hard Oil Universal 259: apply 3 uniform thin coats using a sealing roller with 6–8 hour intervals — no intermediate sanding required. For 240 and 241: important — remove excess oil 30 minutes after the final coat regardless of method. For 290: apply second coat thinly, work in with green pad after 15–20 minutes.
System Composition
- Surface preparation layer (sanding to open wood pores)
- Interior wood oil (penetrating base treatment)
- Optional second oil application (for increased saturation)
- Optional hardwax topcoat (for higher-wear surfaces)
Why It Works
- Oil penetrates into the wood fibre rather than forming a surface film, creating a finish that moves with the wood as it expands and contracts with indoor humidity changes.
- Natural oil-based systems remain vapour-permeable after curing, allowing the wood to regulate moisture exchange with the indoor environment.
- Because the finish is within the wood rather than on top of it, localised wear or damage can be spot-repaired without stripping the entire surface.
Pick the Right Build
Which build fits your surface?
General furniture, cabinets, shelving
If you need a versatile all-round finish → Hard Oil 240. Two coats, warm natural tone, easy wet-on-wet application. The default choice when no special requirements apply.
Hard Oil 240 — 2 coats
Tables, desks, high-touch surfaces
If the surface is handled daily or needs extra durability → Hardwax Oil 290. Micro-wax hardens the surface, resists coffee, wine, and fingerprints better than pure oil.
Hardwax Oil 290 — 2 coats
Light woods (ash, maple, birch)
If you want to keep light wood looking light → Hard Oil Clear 241. Safflower-based, non-yellowing formula prevents the warm amber shift that linseed oils cause on pale timbers.
Hard Oil Clear 241 — 2 coats
High-wear furniture, doors, OSB
If the surface gets heavy use or you want maximum sealing → Hard Oil Universal 259. Three thin coats with a sealing roller at 6–8 hour intervals. No sanding between coats needed.
Hard Oil Universal 259 — 3 coats
What to Expect
- Hardwax Oil 290 fully cures after approximately 7–10 days. During this period, treat surfaces gently. Drying times depend on temperature, ventilation, and wood absorbency.
- Periodic maintenance (re-oiling) intervals depend on use intensity — typically every 6-12 months for furniture, more frequently for high-contact surfaces.
- Oiled surfaces develop a natural patina over time. This is a characteristic of the material, not a defect.
- For complete per-surface decision matrix, application sequence, and TDS-grounded numbers, see the dedicated Interior Furniture & Cabinets sub-route page.
What to Avoid
- Not suitable for exterior use or surfaces exposed to weather, standing water, or direct sunlight.
- Does not provide a film-forming barrier — spills should be wiped promptly to avoid staining.
- Not compatible with previously lacquered, varnished, or sealed surfaces unless the existing coating is fully removed.
- Does not replace structural treatments for wood preservation (e.g., fungicidal or insecticidal treatments).
Scope & Limits
Where this system applies.
This umbrella covers ALL interior wood applications across the Indian home: freestanding and built-in furniture, cabinets and wardrobes, hardwood floors and parquet, staircases and treads, interior doors and window frames and skirting, kitchen worktops and cutting boards, children's toys and nursery furniture, plus decorative chalk-paint / vintage-finish effects on accent pieces. The set spans clear oils (Hard Oil 240, Hardwax Oil 290, Hard Oil Clear 241, Hard Oil Universal 259, Countertop Oil 280), opaque lacquers (Resin Lacquer Primer 810 → White Lacquer 820, Finishing Lacquer 840, Finishing Lacquer Mix 845), filler and decorative auxiliaries (Wood Filler 337, Furniture Chalk Paint 331, Pigment Concentrate 668, Vintage Finish 635).
Requirements
- Before compatible products can be reviewed, the following must be confirmed:
- Substrate is solid absorbent wood (teak, sheesham, Burma teak, mango, neem, ash, maple, birch, white-oak, oak) — engineered MDF / plywood acceptable only on visible solid-wood faces or under the opaque lacquer system (810 primer)
- Application context is interior climate — no direct weather exposure, no standing water, no UV-loaded balcony / verandah edge
- Wood is bare or stripped back to bare wood — no prior lacquer, varnish, polyurethane, melamine, foil-wrap, or factory PU residue
- Moisture content below 14% on the substrate — measure with a pin meter before any finish goes on
- Surface family is identified BEFORE picking the product — this umbrella routes you to the dedicated sub-route, where the per-surface decision matrix lives
Not compatible with
- This umbrella does not apply to:
- Pre-finished factory-sealed surfaces (melamine, laminate, foil-wrap, factory PU, UV-cured polyurethane wear-layer on engineered floors) — neither LEINOS oils nor 810/820/840/845 lacquers bond cleanly to sealed surfaces. Test in an inconspicuous edge first
- Engineered MDF / particleboard / plywood as the PRIMARY substrate under the clear-oil path — engineered cores do not absorb evenly. The opaque-lacquer path (810 primer first) accepts engineered cores on flush-panel doors and painted skirting / window frames
- Exterior weather-exposed wood — interior oils carry no UV stabilisers; the 820/840/845 lacquer set is interior-tested only. Exterior front doors, garden furniture, decks, balcony joinery, exterior side of window frames need dedicated exterior wood systems (see Exterior Wood)
- Mineral, silicate, concrete, or plaster substrates — wood-only chemistry. Use the mineral solutions catalogue for these surfaces
In the wild
Real surfaces. Real India.
Common Questions
Frequently Asked
- 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.
Next step
Ready to see the 14 compatible products?
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Adjacent applications
Related decision paths.
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