Terrace Wood Oil
Penetrating oil-resin finish for exterior wood, designed for terraces, decking, and outdoor timber.
View product detailsCare & Maintenance · Solutions
Care: Exterior Terraces and Furniture
A teak deck on a Mumbai rooftop, a sheesham bench in a Bangalore garden, a bangkirai planter on a Goa beach house — outdoor wood in India lives through three weathers a year: pre-monsoon heat (April–May, UV peak), monsoon (June–September, RH 80–95% with standing rain on horizontals), and dry winter (October–March). Greying within 12 months is the documented Indian-climate behaviour, not a finish failure — and not the same European 2–3 year cycle most TDS sheets assume. The maintenance set documented for that reality is three products: Vegetable Soap 930 for the seasonal wash, Anti-Greying Fluid 940 for UV tone restoration, and Terrace Wood Oil 236 for the annual refresh coat (the same SKU that finishes the timber on first install — re-applied as a single thin coat, no sanding).
ExteriorSingle Layer3 compatible products
- Cycle-built for Indian three-weather year (UV peak + monsoon + dry)
- Annual refresh — 1 thin coat of 236, no sanding, no stripping
- Anti-Greying Fluid 940 restores natural tone without sand-back
- Plant-based Vegetable Soap 930 — fat-replenishing, biodegradable
Find your application
Pick the substrate. We'll show what fits.
Walkable horizontal exterior wood — rooftop and patio decks, pool surrounds, garden boardwalks. The largest UV-exposed surface in the outdoor stack, with monsoon ground-water pooling, daily foot traffic, and 12-month greying as the documented Indian-climate norm. Annual cycle: 930 deep wash (April) → 940 anti-greying only if visible UV-greying (May) → 236 single refresh coat (May–June, before monsoon onset). Coastal decks (Goa, Mumbai, Chennai) run the same cycle every 6 months — salt-air doubles the load.
3 compatible productsAnti-Greying Fluid
Cleaning and refreshing product for greyed wood surfaces. Restores natural warm wood tone without sanding using oxalic acid and coconut oil surfactants.
View product detailsVegetable Soap
Fat-replenishing cleaner for oiled, waxed, and lacquered surfaces. Universal cleaning product from plant-based renewable raw materials.
View product detailsSystem & Substrates
Three-product care cycle. Wash with 930, restore tone with 940, refresh re-oil with 236.
For first install on bare wood, see Exterior Terraces & Decking (deck boards) or Exterior Outdoor Furniture (chairs, tables, planters).
The Coating System
Primer plus topcoat — the full chain.
Long-term Care
Extends the life of the finish over the years.
Step by Step
How to Apply
Time the deck cycle for April–May (pre-monsoon)
The deck refresh weekend should land 72 h before the first expected monsoon rain. Inland Bangalore / Pune: late April through May. Coastal Goa / Mumbai / Chennai: run a second cycle in October–November because salt-air halves the interval. Work in shade or evening — surface temperature below 30 °C. Sun-heated boards flash-cure the oil before it can penetrate.
Diagnose the deck before any product opens
Three-point check. (1) Bead test on three zones (rooftop / chajja-covered / open-sky south-facing) — if water beads → that zone is intact, if it darkens → that zone needs 236 refresh. (2) Tone check — original warm honey vs UV-grey silver; greyed zones need 940 first. (3) Structural check — push a screwdriver into the worst-looking board; firm resistance → maintenance route is right; sinks in → that board needs replacement, not refresh. Photograph the deck before starting.
Wash the deck with Vegetable Soap 930
Dilute 30–50 ml per 10 litres of water. Scrub each board along the grain with a stiff deck brush. Focus on the ground-water pooling spots — low corners, joint lines between boards, the shadow zone under planter bases, and the kick-strip where the deck meets a wall or railing. Rinse with clear water from a garden hose. Allow the deck to dry — 24 h inland in dry season, 48–72 h post-monsoon, 5–7 days on Goa/Mumbai coastal decks. Confirm wood moisture below 14% with a pin meter before proceeding.
Apply Anti-Greying Fluid 940 to UV-greyed boards
Skip if the deck is still its original warm tone. On greyed zones (typically open-sky and south-facing boards): protect plants in surrounding beds with plastic sheeting, divert run-off away from soil. Brush 940 along the grain, work into the wood pores. Contact time 15 min (light greying) to 60 min (heavy weathered grey) — re-wet the surface if it dries. Scrub with a stiff brush, then rinse thoroughly with a garden hose — no oxalic-acid residue should remain in the boards or in the surrounding garden bed. Allow 1–2 days drying before the oil step.
Apply Terrace Wood Oil 236 refresh — 1 thin coat only
Annual refresh is a single thin coat, not the 2-coat first install. Stir 236 well. Brush thinly along the grain, working in 2–3 m² sections to maintain a wet edge. Coverage 140–250 sq ft / litre depending on board absorbency. Avoid puddles between boards or in low spots; spread any pooling within 20 minutes. No sanding required — the refresh oil bonds into the existing finish. Ambient and surface temperature 10–30 °C; never apply in direct sun on a heated board.
Cure the deck before foot traffic resumes
Dust-dry after 6–8 h, foot-traffic safe after 48 h, full cure 72 h. Plan the refresh weekend so foot traffic resumes on day 3 (apply Friday evening → walkable Sunday afternoon → fully cured following Tuesday). Keep planter saucers and outdoor furniture off the boards through cure. Oil-soaked cloths must go into an airtight metal container or be submerged in water before disposal — spontaneous combustion risk on warm Indian afternoons.
Mid-year spot-care on high-wear zones
December–March is for targeted maintenance, not a full cycle. Wash the high-wear zones — door-threshold approach, dining-area centre, the path to the stairs — with diluted 930. Refresh any small zone where the bead test fails by brushing a thin dab of 236 along 2–3 boards and feathering into the surroundings. No 940 needed mid-year unless visible new greying appears on a south-facing zone. Document where wear concentrates so next pre-monsoon cycle can weight there.
System Composition
- Step 1 — Vegetable Soap 930 pre-monsoon deck wash (April)
- Step 2 — Anti-Greying Fluid 940 tone restore on UV-greyed boards (May, optional)
- Step 3 — Terrace Wood Oil 236 single refresh coat before monsoon (May–June)
Why It Works
- The 3-product deck cycle aligns with the Indian three-weather year — pre-monsoon prep (April–May) keeps the finish intact through 80–95% monsoon RH, post-monsoon recovery (October–November) rebuilds water-bead protection on the worst-hit boards, and mid-year spot-care addresses door-threshold and centre-zone wear. European 2-yearly deck cycles do not survive Indian UV plus monsoon load.
- Anti-Greying Fluid 940 chemically reverses UV-induced greying — oxalic acid breaks down the degraded lignin surface layer, restoring the original warm wood tone without sanding back. The existing oil finish underneath stays intact, so the 236 refresh bonds normally.
- Terrace Wood Oil 236 in refresh mode is a single thin coat, not the 2-coat first install — the refresh oil bonds into the existing finish without forming a new film. No sanding between maintenance cycles preserves the deck-board grain texture year after year.
Pick the Right Build
Which build fits your surface?
Pre-monsoon deck prep (April–May, inland)
The canonical preventive deck cycle. 930 wash → 940 only where greying shows → single 236 refresh coat. Schedule the refresh weekend 72 h before the first expected rain. Most inland Bangalore / Pune / Hyderabad decks run this cycle once a year. The deck enters monsoon protected and water-bead-tight.
930 (universal) + 940 (greyed zones only) + 236 (1 thin coat full deck)
Post-monsoon deck recovery (October–November)
The corrective deck cycle. Wash to remove monsoon algae and mildew that accumulated on the boards → assess where water no longer beads → 940 on zones that turned grey through the rains → 236 spot-refresh on the failed-bead boards only (not full deck unless multiple zones failed). For coastal decks this is the second full cycle of the year.
930 (universal) + 940 (selective) + 236 (selective spot-refresh)
Coastal deck cycle (Goa, Mumbai, Chennai)
Run the full pre-monsoon AND full post-monsoon cycles — coastal salt-air carries NaCl that bonds with morning dew on horizontal boards and accelerates both oil oxidation and lignin breakdown. Halve the inland interval. Expect 940 in most cycles, not just occasional ones. Coastal decks also benefit from monthly 930 wash through the dry season to flush salt deposits before they crystallise into the boards.
930 + 940 + 236 every 6 months — pre and post monsoon both
Mid-year deck spot-care (December–March)
No full cycle — targeted maintenance only. Wash the door-threshold approach, the dining-area centre, the stairs path, and any heavy-traffic line. Brush 236 along 2–3 boards in any failed-bead zone, feather into surroundings. No 940 unless visible new greying appears on a south-facing zone. Plan around it — most boards do not need attention this window.
930 (diluted spot wash) + 236 (brush dab, feathered)
What to Expect
- Indian deck-board refresh cycle is annual (every 12 months) on inland decks, every 6 months on coastal decks — versus European 2-yearly intervals. UV plus monsoon load drives the shorter cycle, not the LEINOS chemistry.
- Greying within 12 months on horizontal sun-exposed deck boards is normal Indian-climate behaviour, not finish failure — 940 is the expected response in most cycles.
- Refresh weekend (1 thin coat) on a typical ~20 m² deck runs as 1 person + 1 day. Full cycle including wash + 940 + drying + refresh + cure spans roughly Friday wash → Saturday 940 → Sunday 236 → following Tuesday back in full use.
- Texture and patina deepen over multi-year cycles — the deck gains a warm honey tone characteristic of well-maintained Indian outdoor timber.
What to Avoid
- These care products are for oil-finished decks only — not for PU-coated, varnished, or factory-sealed deck boards. Composite WPC or PVC decking has no wood fibre to absorb 236 and stays sealed.
- Anti-Greying Fluid 940 is exterior-only — oxalic acid run-off harms adjacent garden beds if not diluted with plenty of rinse water. Always protect plants with plastic sheeting before application.
- Do not apply 236 refresh to wet or damp boards — moisture meter must read ≤ 14% before any oil goes on. Refreshing damp boards traps moisture and the oil bubbles, peels, or stays sticky within weeks.
- Care cycle does not rescue structurally failed deck boards — soft, fibrous, deep-split, or screwdriver-sinking boards need replacement, not refresh. Route the whole deck to first-install via Exterior Terraces & Decking if more than ~20% of boards are structurally failed.
Scope & Limits
Where this system applies.
This care solution covers maintenance of oil-finished exterior wood: terrace decks, rooftop and patio decking, garden tables and chairs, lounge chairs, garden benches, picnic benches, planter boxes, garden gates, fence panels, and similar outdoor solid-wood objects where the existing finish is oil-based (LEINOS 236 / 223 or comparable).
Requirements
- Before any care product is applied, the following must be confirmed:
- Existing finish is oil-based (LEINOS Terrace Wood Oil 236, Teak Oil 223, or comparable penetrating oil) — not PU, alkyd paint, varnish, or any film-forming sealer. Oil-over-film flakes within a season.
- Timing window respected — work in the pre-monsoon (April–May) or post-monsoon (October–November) dry window. Avoid the July–September monsoon RH peak when oil cure stalls past 24 h and 940 rinse-water has nowhere to drain.
- Surface temperature ≤ 30 °C during application — work in shade or evening. Sun-heated boards flash-cure the oil before it can penetrate.
- Wood moisture below 14% before any oil goes on — measure with a pin meter, especially after the 930 wash or the 940 rinse. Coastal sites may need 48–72 h to drop below 14% after the rinse step.
- 940 needs a full water rinse — protect adjacent plants with plastic sheeting, divert run-off away from soil beds, and rinse with plenty of clean water so no oxalic-acid residue remains on the boards or in the surrounding garden bed.
- Cure window for 236 refresh — keep the surface dry and unwalked for 16–24 h between coats, foot-traffic-safe after 48 h, full cure 72 h. Plan refresh weekends accordingly.
Not compatible with
- This care system does not apply to:
- Composite WPC decking, PVC decking, or any plastic-based deck board — no wood fibre to absorb the refresh oil; the surface stays sealed and 236 sits as a slick residue. Wash these with mild soap and water only.
- Painted opaque exterior furniture (Weatherproof Paint 850 / 855 finishes) — the painted stack maintains differently: 930 wash + paint touch-up + repaint cycle every 5–7 years (inland) or 3–5 years (coastal). Do not apply 940 to painted wood — oxalic acid attacks paint film. Do not apply 236 over paint — oil cannot bond through the film.
- Sealed exterior surfaces (PU-coated decks, varnished outdoor furniture, factory-sealed teak with a film finish) — wrong system class. Either strip back to bare wood and treat as first-install via the Exterior Terraces & Decking solution, or maintain per the film manufacturer's instructions.
- Interior oiled floors and furniture — different oils, different cure-and-wash chemistry; use Care: Interior Oiled Floors or Care: Interior Furniture & Surfaces solutions for those surfaces.
In the wild
Real surfaces. Real India.
Common Questions
Frequently Asked
- 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.
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