01
Deep penetration
Isoaliphatic carrier pulls linseed oil into the wood pores, not just the surface.
WOOD PRIMER · ART. 150
Wood primer that locks out sapstain.
LEINOS 150 — open-pore impregnation primer for untreated softwood and absorbent hardwood. IPBC sapstain barrier, 130–180 sq ft/L coverage, 16–24 h cure. Brushed in under LEINOS Wood Varnish 260.
VOC 350 g/l · EU Cat. fSapstain barrier (IPBC)Open-pore breathableMade in Germany
Mechanism & Use
How 150 wood primer works.
Linseed oil + isoaliphatic carrier penetrate the grain — a REACH-registered IPBC barrier interrupts the blue-stain fungal cycle on softwood and monsoon-exposed timber.
02
Open-pore cure
Cures without forming a film. Vapour stays free to move through the grain.
03
Fibre strengthening
Polymerised oil binds loose end-grain and evens the absorption pattern for the topcoat.
04
Sapstain barrier
IPBC biocide stops blue-stain fungi before the topcoat seals the surface.
Where It Lives
Where 150 lives
Mumbai softwood doorframes
Jobsite doors and casements before LEINOS stain or varnish topcoats.
Pune window casements
Softwood window units, priming for outdoor varnish under monsoon.
Goa teak end-grain
Sealing absorbent end-grain on decking and outdoor furniture.
Kerala rosewood prep
Heritage timber prep after weathering, before refinish.
Workshop dipping tanks
Batch processing of softwood furniture before topcoat.
Carpenter pre-stain prep
Even absorbency under LEINOS Wood Varnish 260 series.
Compliance · EU · REACH
Lab-tested. Institution-verified.
Four anchors that let architects specify Primer 150 under the LEINOS Wood Varnish system without disclaimers.
Institutional Pledge
InVeNa Member
Reincke Naturfarben — full-ingredient-disclosure pledge for natural building products, biocide content disclosed honestly.
EU Compliance
VOC 350 g/l
EU limit 700 g/l · Cat. f minimal-build woodstain · Directive 2004/42/EC.
Biocide Compliance
Sapstain Barrier (IPBC)
Iodopropynyl Butylcarbamate (0.1–0.6%) — REACH-registered film-protection biocide. Active against blue-stain fungi on softwood and monsoon-exposed timber.
Origin
Made in Germany
Manufactured by Reincke Naturfarben GmbH in Horneburg, Lower Saxony, est. 1985.
Primer 150 contains IPBC at 0.1–0.6%, disclosed under EUH208 per the InVeNa pledge. The biocide is the trade-off for sapstain protection on softwood and monsoon-exposed timber. For dense pre-treated hardwood without blue-stain risk, the primer can be skipped (see the FAQ for the 3-state primer logic).
Read The Full TDSStep by Step
How to Apply
Prepare the substrate. Dry, clean, dust- and grease-free, absorbent. Sand softwood with 120-grit; for weathered teak or rosewood, pair with LEINOS 940 Anti-Greying Fluid first. Solid sawn wood only, no painted or sealed substrates.
Stir 150 thoroughly before use: open the can, mix with a wooden stir-stick to re-blend the natural binder and IPBC. Do not thin.
Apply undiluted by brush — work with the grain, generous coat. The wood should visibly absorb the primer; light-absorbent zones may darken slightly (normal). Roller works on flat panels; workshop dipping is the method for batch processing.
Redistribute at ~20 minutes. Brush back any glossy excess sitting on denser zones so the cured surface stays open-pored, not film-coated.
Dry 16–24 hours at 20°C and 50–55% RH. Higher humidity extends drying — ensure good fresh-air circulation through the workshop or jobsite. Surface should feel dry-to-touch and look matte before overcoating.
Apply your LEINOS topcoat. Primer 150 is a single-coat primer — there is no second coat of 150. Once the primed surface is fully cured (16–24 h), brush on LEINOS Wood Varnish 260 (the canonical exterior topcoat over 150). For interior projects, the LEINOS system uses a different primer (220 Primer Oil, no biocide) under Wood Varnish 261 or Hardwax Oil 290. The primer-evened absorbency means the topcoat goes on uniformly across softwood and hardwood — no blotchy zones, no sapstain bleeding through.
Application Conditions
- Surface and ambient temperature 5–30°C; relative humidity 50–55% for the canonical 16–24 h cure.
- Substrate must be absorbent — untreated wood, no existing film coatings (varnish, lacquer, PU).
- Good fresh-air circulation through workshop or jobsite during drying.
- Avoid direct sun on the wet primed surface; light-absorbent wood may dry slightly darker (normal).
Coats & Recoating
- Single primer coat — do NOT apply a second coat of 150.
- Overcoat with LEINOS Wood Varnish 260 (exterior) once the primed surface is fully cured. Interior projects use LEINOS Primer Oil 220 under Wood Varnish 261 / Hardwax Oil 290 — see The Coating System section.
- Recoat window: after 16–24 h at 20°C / 50–55% RH; longer in monsoon humidity.
Cleaning & Storage
- Clean tools immediately after use with LEINOS Brush Cleaner or white spirit. Oil-soaked rags must be stored in a sealed metal container or in water before disposal — risk of spontaneous combustion.
- Store in a cool, well-ventilated place between 5–30°C. Protect from sunlight and frost. Keep container tightly closed when not in use. Shelf life: at least 2 years in original sealed container.
First time with Impregnation Wood Primer? Our technical team runs complimentary on-site walkthroughs for contractors — full application protocol, start to finish.
The Coating System
Primer 150 → Wood Varnish 260. The exterior chain.
LEINOS runs a two-primer system. Primer 150 (with IPBC sapstain biocide) is the canonical primer under Wood Varnish 260 for EXTERIOR and sapstain-prone wood. INTERIOR projects use the sister primer 220 Primer Oil (no biocide) under Wood Varnish 261 or Hardwax Oil 290. Penetrating oils (236 terrace, 240 hard oil, 280 countertop, 290 hardwax) need no primer — the TDS for each finish covers substrate prep directly.
The Coating System
Primer plus topcoat — the full chain.
Primer150Impregnation Wood Primer
Substrate Fit
150 works on — and what it doesn’t.
Suitable
Recommended substrates
- Untreated softwood and hardwood for interior or exterior topcoats
- Absorbent wood (light-absorbent wood may dry slightly darker — normal per TDS)
- Wood prone to blue-stain fungi (sapstain-prone softwood, monsoon-exposed timber)
- Doorframes, window casements, joinery before LEINOS Wood Varnish
Honest Limits
Where to use a different product
- Already-finished surfaces (existing varnish, lacquer, oil, or PU films) — primer needs absorbent wood. Sand back to bare wood first.
- Non-absorbent dense substrates where primer would sit on top instead of penetrating.
- Greyed weathered wood — pre-treat with LEINOS 940 Anti-Greying Fluid first, then prime. LEINOS 940 Anti-Greying Fluid
Use With Care
Working safely with 150
- Store away from children.
- Avoid release to the environment.
- Oil-soaked application materials pose a spontaneous combustion risk. Store used cloths, sponges, and sanding dust immediately in a sealed metal container or in water before disposal.
- When spraying, wear approved respiratory protection.
- Contains Iodo-2-propynyl-butyl-carbamate. See SDS for hazard and precautionary statements.
Full safety data sheet, in PDF.Open SDS
Coverage & Pack Sizes
Pick the right pack for the job.
Coverage assumes single-coat primer on absorbent softwood. Variation depends on substrate porosity and grain.
0.75L
Covers
100–135 sq ft
1 coat, absorbent wood
Best For
Test boards, small joinery, single-piece priming.
2.5L
Covers
325–450 sq ft
1 coat, absorbent wood
Best For
Mid-size jobs — doors, window frames, single-room batches.
10L
Covers
1300–1800 sq ft
1 coat, absorbent wood
Best For
Workshop dipping tanks and contractor pre-finish runs.
sq ft
Enter your floor area to see how many litres — and the most efficient pack mix — you’ll need for 1 coat.
Documented Applications
See this product in real projects
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.
Linseed Oil
Cold-pressed flax-seed oil is the LEINOS signature drying oil. Polymerises with oxygen over 16–24 hours to bond inside the wood grain without forming a surface film. Sourced from flax (no sunflower).
Isoaliphatic Carrier
Refined isoparaffin solvent (30–40% by mass per Reincke SDS L-150). Thins the formulation so the linseed oil reaches deep into the wood pores, then evaporates fully during the 16–24 h cure. EUH066: repeated exposure may cause skin dryness.
Sapstain Biocide (IPBC)
Iodopropynyl Butylcarbamate at 0.1–0.6%: a REACH-registered film-protection biocide active against blue-stain fungi (Aureobasidium pullulans and related) per Directive 528/2012. Kept at minimum effective concentration; EUH208 allergic-reaction disclosure on label per InVeNa pledge.
Drying Catalysts (Mn + Ca)
Manganese neodecanoate and calcium 3,5,5-trimethylhexanoate at 0.1–0.5% each. Accelerate the oxidative polymerisation of the linseed-oil base. Cobalt-free: LEINOS does not use cobalt-based driers.
Got Questions?
Frequently Asked
Quick answers on formulation, application and Indian-climate suitability. Pulled from our full FAQ and TDS library.
- Most LEINOS interior wood products require 2-3 coats for optimal results. Always refer to the specific product TDS for exact recommendations.
- 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.
- Yes for untreated softwood, absorbent wood, or wood prone to sapstain — the LEINOS system specifies Primer 150 under Wood Varnish 260 for these substrates. The primer evens out absorbency so the varnish goes on uniformly, and the IPBC biocide adds sapstain protection the varnish alone cannot provide. For dense pre-treated hardwood with even absorbency and no blue-stain risk, the primer can be skipped.
- Yes, particularly on weathered surfaces or absorbent end-grain. Tropical hardwoods often have a mix of dense and porous zones — the primer evens absorbency so the topcoat doesn’t blotch. For new dense teak with a uniform face, primer may not be needed; for weathered or end-grain-heavy zones, it improves topcoat uniformity. Get Expert Advice if uncertain about your specific substrate.
For Architects & Specifiers
Downloads
Technical and safety documents — citable in project specifications.
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Written by the LEINOS India technical team, in collaboration with Reincke Naturfarben R&D, Lower Saxony.
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