0.25L
Covers
15–20 sq ft
2 coats, absorbent wood
Best For
Touch-ups, a single window frame, or a sample before full spec.
SILK-GLOSS COVER LACQUER · ART. 840
Finishing lacquer for wood and metal that holds its colour.
LEINOS 840 — a plant-oil cover lacquer for exterior and interior woodwork, metal and stoneware. Silk-gloss, weather- and light-resistant, biocide- and aromatic-free — in 10 mutually mixable colours.
Weather- & light-resistantBiocide- & aromatic-freeVOC cat e · EU 400 g/lMade in Germany
Colour Range
Ten Cover Colours
Ten opaque, silk-gloss colours — all mutually mixable. Need a bespoke tone? Finishing Lacquer Mix 845 tints to any NCS or RAL reference at our Delhi lab.
127
White
913
Black
733
Anthracite Grey
719
Light Grey
612
Fir Green
403
Dove Blue
356
Nordic Red
221
Yellow
508
Blue
614
Leaf Green
These are opaque cover colours — the lacquer blocks out the substrate, so the finished tone reads solid, not translucent. Screen chips approximate the real paint; confirm the final match with a drawdown before specification.
Beyond the Ten
Custom NCS or RAL colour via Finishing Lacquer Mix 845 at our Delhi lab — any architectural reference matched, then tinted to order. Bring the spec, take the shade home.
Mechanism & Use
How LEINOS 840 finishing lacquer works.
A plant-oil cover lacquer that builds an opaque, silk-gloss film — weather-, light- and block-resistant, and biocide- and aromatic-free.
01
Plant-oil binder builds the film
A plant-oil binder oxidatively cures in air into a tough, silk-gloss cover film that flexes with the substrate.
02
Titanium dioxide covers opaque
Titanium dioxide and light-stable pigments give high opacity and clean edge coverage, blocking out wood or metal.
03
Weather-, light- and block-resistant
The cured film resists sun, rain and yellowing and stays block-resistant, so painted windows and doors don’t stick shut.
04
Biocide-free, aromatic-free
No in-can biocides and a dearomatised solvent — made in Germany by Reincke Naturfarben.
Where It Lives
Where 840 lives
Windows and doors
Dimensionally-stable joinery in a silk-gloss opaque colour.
Gates, sheds and soffits
Limited-dimensionally-stable exterior wood that moves with the seasons.
Fences, carports and palisades
Rough, non-dimensionally-stable outdoor structures.
Metal and steel
Railings, grilles, gates and balustrades — not galvanized or anodized.
Radiators and heating covers
A heat-stable silk-gloss finish for heating bodies.
Interior stairs and floors
Hard-wearing opaque colour on wooden treads and boards.
Compliance · EU · Origin
Declared in full. Made in Germany.
The honest anchors that let specifiers put 840 on exterior joinery, metalwork and radiators — no over-claiming.
840 is a film-forming lacquer, so a damaged coat is repaired by sanding the area back and re-lacquering — not spot-oiling. It contains cobalt octoate as a drier (a possible allergen, declared on the label) and is biocide- and aromatic-free. The TDS is downloadable; the full SDS is available to architects and contractors on request — use Get Expert Advice above.
Read The Full TDSStep by Step
How to Apply
Prepare and prime — the surface must be dry, firm, clean, grease- and dust-free, and not absorbent. Prime bare wood, metal or stoneware with LEINOS Resin Lacquer Primer 810; for strongly absorbent wood, deep-prime with Priming Oil 220 first.
Sand the primer — once the primer has dried, sand with 150/180 grit and dust off to leave a smooth, even key for the lacquer.
Stir the lacquer — stir 840 thoroughly before use; pigment and matting agents settle in storage. For coloured work, the primer can be tinted up to 10:1 with the lacquer so the colour comes up in fewer coats.
Apply the first coat — brush, roll or spray a thin, even coat (approx. 110–155 sq ft per litre). Protect the surface from rain, wind, direct sun and dew during drying.
Sand and second coat — after 24 hours (dust-dry approx. 8 h, grip-firm approx. 12 h), sand lightly with P180, dust off and apply the second coat. Keep the room well ventilated: the film cures by taking up oxygen.
Clean up and cure safely — clean tools with LEINOS Verdünnung 200 (thinner), not water. Store oil-soaked rags under water or in a sealed metal tin — self-ignition risk. Keep the tin cool, dry and frost-free.
Coats & Recoating
- Sandable/overcoatable after 24 hours. Sand lightly (P180) between coats.
Cleaning & Storage
- Clean tools immediately after use with LEINOS Verdünnung 200 (thinner). Do not use water.
- Store in a dry and cool place, protect from freezing. Shelf life in closed packaging is at least 2 years.
First time with Finishing Lacquer? Our technical team runs complimentary on-site walkthroughs for contractors — full application protocol, start to finish.
System & Substrates
Prime with 810, then two coats of 840. That’s the lacquer system.
On bare wood, metal or stoneware, prime first with Resin Lacquer Primer 810 — then two coats of 840. Need a bespoke colour? 845 tints to any NCS or RAL.
The Coating System
Primer plus topcoat — the full chain.
Substrate Fit
840 works on — and what it doesn’t.
Suitable
Recommended substrates
- Windows and doors — dimensionally-stable joinery
- Garden sheds, roof soffits and exterior gates
- Fences, carports and palisades
- Metal and steel — railings, grilles, gates
- Stoneware and mineral surfaces
- Radiators and heating covers
- Interior wooden stairs and floors
Honest Limits
Where to use a different product
- Anodized aluminium — the lacquer cannot key to the sealed oxide layer.
- Galvanized or zinc-coated surfaces — no reliable adhesion.
- For a clear finish that shows the wood grain instead of an opaque colour, use LEINOS 236 Terrace Wood Oil
- Strongly absorbent bare wood — deep-prime with Priming Oil 220 and Resin Lacquer Primer 810 first.
Use With Care
Working safely with 840
- Harmful to aquatic organisms, with long-lasting effect — avoid release to the environment.
- Contains cobalt octoate — may cause allergic reactions.
- Repeated contact may cause dry or cracked skin.
- Oil-soaked rags and materials can self-ignite — store under water or in a sealed metal container until disposal.
- Keep away from children.
- Wear respiratory protection when spraying; wear a fine-dust mask when sanding.
Coverage & Pack Sizes
Pick the right pack for the job.
Coverage assumes two coats over a primed surface. Absorbency and texture change the rate.
0.75L
Covers
40–60 sq ft
2 coats, absorbent wood
Best For
A door, a gate, a radiator, or a set of shutters.
2.5L
Covers
140–195 sq ft
2 coats, absorbent wood
Best For
A windows-and-doors package, fences or railings — the most-specified size.
sq ft
Enter your area to see how much material — and the most efficient pack mix — you’ll need for 2 coats.
Full Declaration
Composition
Every ingredient declared on the label. The Trust Hub explains what each one does and the standards behind it.
Plant-oil binder
A plant-oil-based binder is the film former — it oxidatively cures in air into a tough, silk-gloss cover film that flexes with the substrate instead of cracking.
Titanium dioxide, pigments & mineral fillers
Titanium dioxide plus light-stable inorganic and organic pigments and mineral fillers give the lacquer its high opacity, colour retention, clean edge coverage and silk-gloss body.
Aliphatic hydrocarbons
A dearomatised (aromatic-free) hydrocarbon carrier flows the lacquer out level, then evaporates during cure. Clean tools with LEINOS Verdünnung 200, not water.
Drying agents (incl. cobalt octoate)
Metal-soap driers catalyse the oxidative cure. Cobalt octoate is one of them — a possible allergen, declared honestly on the label rather than hidden.
Got Questions?
Frequently Asked
Quick answers on formulation, application and Indian-climate suitability. Pulled from our full FAQ and TDS library.
- Oils penetrate the wood and enhance the natural grain, while lacquers form a protective film on the surface for higher mechanical resistance.
- Generally no. Lacquer requires a clean, untreated or sanded surface. Oil residues prevent proper adhesion of the lacquer film.
- Light sanding between coats (P220-P320) and applying thin, even layers are key. Avoid over-brushing to prevent visible brush marks.
- The plant-oil binder cures to a film that stays elastic and block-resistant, and its high weather and light resistance and low yellowing hold the colour through sun and monsoon. It is still a film finish, so a damaged coat is repaired by sanding the area back and re-lacquering — not spot-oiling — and moving joints last longest when primed first with Resin Lacquer Primer 810 and maintained periodically.
- No. 840 contains cobalt octoate (a possible allergen) and an aliphatic-hydrocarbon solvent, so it is not toy-safe or food-safe. For children’s furniture use the water-based Wax Varnish 600; for food-contact or barefoot interior wood use a toy-safe finish such as Interior Hardwax Oil 290.
For Architects & Specifiers
Downloads
Technical and safety documents — citable in project specifications.
Need a Recommendation?
Talk to LEINOS
Four ways to reach our India team — pick the one that fits how you work.
Written by the LEINOS India technical team, in collaboration with
Reincke Naturfarben R&D, Lower Saxony.
Last updated
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