0.25L
Covers
20–25 sq ft
2 coats, absorbent wood
Best For
Touch-ups, spot repairs, and sample swatches before full spec.
INTERIOR WOOD FINISH · ART. 241
Clear hard oil that keeps pale wood pale — no amber shift.
LEINOS 241 — safflower-based and non-yellowing. It penetrates and hardens inside the pore for high-wear Indian interiors, without the amber warmth of linseed. For maple, ash, light oak, cork and open-pored stone.
Non-yellowingBiocide-freeVOC 460 g/lMade in Germany
Mechanism & Use
How LEINOS 241 hard oil clear works.
Penetrating, non-yellowing oil-resin finish that hardens inside the wood — clear and biocide-free, so pale interiors keep their natural tone.
01
Penetration
Safflower stand oil and safflower oil soak into the open pore. No surface film to scuff or peel.
02
Hard cure
Natural resin cross-links the cured oils into a hard-wearing matrix inside the fibre.
03
Breathability
Open-pore finish lets wood, cork and stone stay vapour-permeable.
04
Stays clear
Safflower is non-yellowing — pale woods keep their natural tone, with no amber shift over time.
Where It Lives
Where 241 lives
Pale wood floors & stairs
Maple, ash and light-oak floors and stairs that must keep their natural pale tone under traffic.
Pale furniture & joinery
Tables, cabinets and built-ins in light timber that stay open-pore and spot-repairable.
Limed & whitewashed wood
Bleached, limed and whitewashed surfaces where any amber shift would be visible.
Cork floors & wall tiles
Absorbent cork that needs water-repellency without sealing or yellowing the surface.
Open-pored stone & terracotta
Unglazed stone and traditional Indian terracotta — water-repellent, still breathing.
High-wear pale zones
Hallways and worn-traffic areas where a film finish would scuff and a linseed oil would amber.
Composition · Origin · EU
Natural composition. German origin.
Three anchors that let architects specify 241 as a clean, non-yellowing interior oil — without the amber shift of linseed.
Institutional Pledge
InVeNa Member
Reincke Naturfarben — full-ingredient-disclosure pledge for natural building products.
Unlike film finishes that yellow, scuff and peel — and unlike linseed oils that amber pale wood over the years — 241 cures near-colourless inside the pore and renews with a single brush coat, no sanding. Full technical data available on request.
Step by Step
How to Apply
Prepare the substrate — dry, solid, clean, grease- and dust-free, and absorbent. Sand wood along the grain to a fine, even, dust-free surface. Remove any old film coating (PU, lacquer, varnish) first — 241 needs an open, absorbent surface to penetrate.
Stir thoroughly and check conditions — stir 241 well before use; it is ready to use, do not thin. Keep room and surface temperature above 15 °C throughout application and drying.
Apply the first coat — brush, roll, spray or dip a thin, even coat into the absorbent surface. The clear oil soaks into the open pore; the pale tone stays light, with only a faint natural sheen. Coverage approx. 150–215 sq ft per litre per coat.
Second coat, wet-on-wet — apply the second coat wet-on-wet after a short 20–30 minute wait. At least two coats are required for hard-wearing interior surfaces.
Remove the excess — about 30 minutes after the final coat, wipe off all surface oil with a lint-free cloth, leaving a dry, open-pore matte finish. Any oil left on the surface stays tacky.
Dry, cure and care — dust-dry in approx. 8 h; walkable and recoatable after 16–20 h with good air circulation (a fan speeds drying and reduces odour). For extreme wear, finish with LEINOS Hard Oil Special 245. Store oil-soaked cloths in a sealed metal container or under water — spontaneous-combustion risk.
Coats & Recoating
- Minimum 2 coats required. Wet-on-wet method: apply second coat after 20-30 minutes.
Cleaning & Storage
- Immediately after use, clean tools with LEINOS Thinner 200.
- Store in a dry and cool place, protect from freezing. Shelf life in closed packaging is at least 2 years.
First time with Hard Oil Clear? Our technical team runs complimentary on-site walkthroughs for contractors — full application protocol, start to finish.
System & Substrates
Two clear coats of 241. Refresh with a single brush coat — no sanding.
Two-coat wet-on-wet system on absorbent interior surfaces — no primer needed. Maintain and refresh with 285 Oil Refurbisher.
The Coating System
Two thin coats of the same clear penetrating oil — no primer.
Base Coat241Hard Oil Clear
Second Coat241Hard Oil Clear
Long-term Care
Extends the life of the finish over the years.
Substrate Fit
241 works on — and what it doesn’t.
Suitable
Recommended substrates
- Pale softwood and hardwood — maple, ash, birch, light oak
- Wood floors, stairs and furniture where the tone must stay light
- Limed, whitewashed and bleached wood
- Cork floors and wall tiles
- Open-pored, unglazed stone and terracotta
- Absorbent engineered wood
Honest Limits
Where to use a different product
- Damp and permanently moist areas — 241 is not suitable in wet zones.
- Exterior wood, decks and garden furniture — use LEINOS 223 Teak Oil
- Painted, lacquered or PU-sealed surfaces — the substrate must be absorbent. Sand off any film coating first.
- Glazed or sealed tiles — 241 only penetrates unglazed, open-pored stone and terracotta.
Use With Care
Working safely with 241
- Can be fatal if swallowed and enters airways.
- Oil-soaked materials pose spontaneous ignition risk — store in sealed metal containers or submerged in water.
- Wear respiratory protection when spraying.
- Wear dust mask when sanding.
Coverage & Pack Sizes
Pick the right pack for the surface.
Coverage on the card assumes two coats on absorbent interior wood. Variation depends on substrate density and absorbency.
0.75L
Covers
55–80 sq ft
2 coats, absorbent wood
Best For
A single piece of pale furniture, a flight of stairs, or small cork panels.
2.5L
Covers
190–270 sq ft
2 coats, absorbent wood
Best For
A standard room floor — the most-specified interior size.
10L
Covers
750–1075 sq ft
2 coats, absorbent wood
Best For
Whole-home pale floors, large cork or stone areas, contract projects.
sq ft
Enter your area to see how much material — and the most efficient pack mix — you’ll need for 2 coats.
Related Work
Interior wood projects from our portfolio
Documented interior wood projects. Captions show which LEINOS finish was used.
Full Declaration
Composition
Every ingredient declared on the label. The Trust Hub explains what each one does and the standards behind it.
Safflower Stand Oil & Safflower Oil
The non-yellowing penetrating body. Safflower oil (pressed from the safflower thistle, Distelöl) is a natural drying oil that cures near-colourless — unlike linseed, it does not amber pale wood. Heat-bodied stand oil adds fill and durability. Both soak into the open pore and polymerise with oxygen inside the grain.
Natural Resin (Rosin Ester)
Pine-derived natural resin ester. Cross-links the cured oils into a hard-wearing matrix inside the wood fibres — the “resin” in the brand’s oil-resin chemistry, and the “hard” in Hard Oil.
Isoparaffin Carrier
Plant-derived isoparaffin solvent carrier (isoalkane; C10–C13, under 2% aromatics per the 241 TDS). Evaporates fully on cure, leaving the oil-resin matrix bonded in the wood.
Driers
Trace metal siccatives that speed the oxidative polymerisation of the drying oils. There is no pigment and no biocide of any kind — 241 is the clear, biocide-free member of the Hard Oil family.
Got Questions?
Frequently Asked
Quick answers on formulation, application and Indian-climate suitability. Pulled from our full FAQ and TDS library.
- Minimum 2 coats required. Wet-on-wet method: apply second coat after 20-30 minutes.
- It depends on the existing finish. Synthetic coatings must be fully removed. Old natural oil finishes can often be recoated after light sanding.
- Allow full curing time as specified in the product TDS, typically 7-14 days for full hardness, though the surface may be touch-dry much sooner.
- Check the specific product TDS for food contact suitability. Many LEINOS interior wood oils are safe for food contact once fully cured.
- Both are LEINOS penetrating oil-resin finishes for absorbent interior wood, and they apply the same way — two coats wet-on-wet, wipe the excess, open-pore result. The difference is the oil. 240 Hard Oil is linseed-based: it warms and ambers the wood over time and is tintable in nine shades. 241 Hard Oil Clear is safflower-based and non-yellowing: it cures near-colourless and keeps pale woods — maple, ash, birch, light oak, limed and whitewashed timber — close to their natural tone. Choose 241 when you don’t want the amber shift; choose 240 when you want warmth or a tinted shade.
- Yes — that is what it is for. Safflower oil is a non-yellowing drying oil, so unlike linseed it does not amber the surface as it ages. A slight deepening is normal the moment you apply it — the oil “wets” the grain and light substrates dry a touch darker — but there is no progressive amber shift over the years. For pale, limed or whitewashed wood where keeping the natural tone matters, 241 is the clear choice. It carries no pigment and no biocide.
For Architects & Specifiers
Downloads
Technical and safety documents — citable in project specifications.
Need a Recommendation?
Talk to LEINOS
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Written by the LEINOS India technical team, in collaboration with
Reincke Naturfarben R&D, Lower Saxony.
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