0.5L
Covers
45–55 sq ft
1 coat, weathered wood
Best For
A jar. About 4–5 m²: a bench or a small garden set
OUTDOOR WOOD CARE · ART. 940
Grey teak, brought back before the oil.
LEINOS 940 is a water-based cleaner for weathered garden furniture and decking, hardwood or softwood. Oxalic acid and coconut-oil surfactants lift the silver-grey; a scrub and a rinse carry it away. Then the wood takes a fresh coat of Teak Oil 223 or Terrace Wood Oil 236. Made in Germany.
Hardwood · softwoodWater-based15 minutes to 1 hourMade in Germany
Mechanism & Use
How LEINOS 940 Anti-Greying Fluid works.
Greyed wood has not lost its strength; it has lost its colour. 940 takes the grey away so the oil can go into sound, clean wood.
01
It works while the wood stays wet
The fluid is brushed on undiluted and thin, about 100–125 ml per m², and left for 15 minutes, up to an hour on heavy greying. It has to stay moist the whole time, so it goes on in the shade, never in direct sun.
02
Oxalic acid and coconut soap
Oxalic acid brightens the weathered surface; surfactants from coconut fatty acid loosen the dirt. Methyl cellulose thickens it so it stays on the wood. As an InVeNa member LEINOS publishes all five ingredients.
03
Scrub, rinse, let it dry
A root brush and plenty of water carry the grey off, and a thorough rinse neutralises the surface. The wood then dries for 1–2 days. It comes out rough and pale, which is exactly what it should look like at this stage.
04
The oil is the protection
940 cleans and does not protect. A light sand and a coat of Teak Oil 223 or Terrace Wood Oil 236 bring the warm colour back. Reddish and brownish shades of 236 add UV protection that holds the next greying back.
Where It Lives
Where 940 lives
Teak garden furniture
Benches, tables and chairs that have gone silver after a few monsoons.
Softwood garden furniture
Pine and other softwood sets. The fluid works on soft woods as well as hard.
Decking and terrace boards
Greyed boards before they are re-oiled with 236, or 223 on teak.
Pool-side loungers and benches
Wood that sees sun and water every day and greys fastest.
Verandah and balcony wood
Railings, steps and seating with no intact varnish or paint on them.
Before the first LEINOS oil
A weathered set starts clean, so the first coat goes into sound wood.
Disclosure · Origin
Five ingredients, all on the label.
A cleaner does not collect coating certificates. What it can show is what is in it, and where it is made.
Ingredient disclosure
InVeNa member
Every ingredient is published: water, oxalic acid, coconut oil surfactants, methyl cellulose and a vegetable-based emulsifier.
Origin
Made in Germany
Made in Germany for LEINOS Naturfarben, to the same formulation sold in Germany.
Anti-Greying Fluid is not classified as hazardous, but it is an acid with a pH of 2.2. Wear safety goggles and nitrile gloves, keep it out of reach of children, and do not let it run into drains or waterways. The TDS is downloadable; the safety data sheet is issued on request — use Talk to LEINOS above.
Read The Full TDSStep by Step
How to Apply
Work in the shade, never in direct sun, or the fluid dries before it has done its job. On hot days, wet the wood lightly first.
Shake the container briefly before use. Put on safety goggles and nitrile gloves.
Brush it on undiluted and thin with a brush or cloth, about 100–125 ml per m². Leave it for 15 minutes, up to 1 hour on heavy greying, and keep the wood moist.
Scrub the surface thoroughly with a root brush and plenty of water.
Rinse thoroughly with water to neutralise the surface and carry the dirt away. Let the wood dry for 1–2 days. Rough and pale is normal at this stage.
Sand lightly, then oil the wood with Teak Oil 223 or Terrace Wood Oil 236. The warm colour comes back with the oil.
Coats & Recoating
- One application. On heavy greying, extend the contact time up to 1 hour rather than applying twice, and keep the wood moist throughout.
Cleaning & Storage
- Rinse brushes and tools with water after use.
- Store dry, cool and frost-free. Unopened, it keeps for at least 2 years.
First time with Anti-Greying Fluid? Our technical team runs complimentary on-site walkthroughs for contractors — full application protocol, start to finish.
System & Substrates
Lift the grey, then oil the wood.
Anti-Greying Fluid is the first stage of an outdoor renewal. The oil that follows is what protects the wood.
The Renewal System
940 clears the grey. Teak Oil 223 re-oils teak and tropical hardwood; Terrace Wood Oil 236 re-oils any exterior timber.
Lift the grey940Anti-Greying Fluid
Substrate Fit
940 works on — and what it doesn’t.
Suitable
Recommended substrates
- Greyed garden furniture of hardwood, teak included
- Greyed garden furniture of softwood
- Greyed decking and terrace boards
- Other weathered exterior wood with no intact varnish or paint film
Honest Limits
Where to use a different product
- Wood under an intact varnish or paint film — the fluid cannot reach the grey beneath it.
- Indoor surfaces and oiled floors — they are cleaned with Vegetable Soap 930. LEINOS 930 Vegetable Soap
- Work in direct sun — the fluid dries too fast to act.
Use With Care
Working safely with 940
- Not classified as hazardous, but the fluid is acidic (pH 2.2). Wear safety goggles and nitrile gloves while applying and scrubbing.
- If medical advice is needed, have the container or label at hand. Keep out of reach of children.
- Avoid release to the environment. Slightly hazardous to water (WGK 1): do not pour the product into drains or waterways.
- Do not work in direct sun — the fluid dries too quickly and stops working.
Coverage & Pack Sizes
Enough for a bench, or for the whole deck.
At approx. 100–125 ml per m², a litre does about 8–10 m². Rough-sawn or profiled wood takes more.
2.5L
Covers
215–270 sq ft
1 coat, weathered wood
Best For
About 20–25 m²: a large garden set or a small deck
sq ft
Enter your area to see how much material — and the most efficient pack mix — you’ll need for 1 coat.
Full calculatorFull Declaration
Composition
Every ingredient declared on the label. The Trust Hub explains what each one does and the standards behind it.
Water
The carrier. The fluid is water-based, with a VOC content of 0.1 g/l.
Oxalic acid
The active ingredient that brightens greyed wood. It is why the fluid is acidic (pH 2.2) and why the surface is rinsed to neutralise it.
Coconut oil surfactants
Washing agents made from coconut fatty acid. They loosen the dirt so the scrub and rinse can carry it off.
Methyl cellulose
A cellulose thickener that keeps the fluid on the wood instead of running off vertical surfaces.
Vegetable-based emulsifier
Keeps the fluid evenly mixed. Shake briefly before use.
Got Questions?
Frequently Asked
Quick answers on formulation, application and Indian-climate suitability. Pulled from our full FAQ and TDS library.
- Sun and rain break down and wash out the surface of unprotected wood, and it turns silver-grey. That does not make the wood weaker, but it no longer looks like teak. Anti-Greying Fluid removes the grey layer so the wood can be oiled again.
- No. The fluid, a scrub and a rinse take the grey off. After the wood has dried for 1–2 days it is rough, so it gets a light sand before the oil. That is a smoothing pass, not sanding back to fresh wood.
- No. 940 cleans and does not protect. Straight after treatment the wood is bare, pale and leached, and it will grey again quickly. Oil it with Teak Oil 223 or Terrace Wood Oil 236 once it is dry and lightly sanded.
- Teak Oil 223 for teak and other tropical hardwoods. Terrace Wood Oil 236 for any exterior timber, decking included. In the reddish and brownish shades, 236 adds UV protection that holds the next greying back.
- It is water-based and not classified as hazardous, but it is an acid with a pH of 2.2. Wear safety goggles and nitrile gloves, keep it out of reach of children, and do not let it run into drains, ponds or garden beds in quantity.
- About 100–125 ml per m² on smooth wood, more on rough-sawn or profiled boards. The 0.5 litre jar does about 4–5 m², a bench or a small garden set. The 2.5 litre canister does about 20–25 m², enough for a large set or a small deck.
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.
For Trade & Specifiers
For Architects, Designers & Contractors
Full TDS / SDS library, specification support and trade pricing — direct from the manufacturer.
Documents
TDS / SDS
Per-product datasheets and safety sheets, downloadable in English.
Specification
NCS Match
Custom colour briefs and material samples mixed at our Delhi lab.
Trade
Direct Pricing
Volume tiers, project quoting and stock allocation through our trade desk.
Written by the LEINOS India technical team, in collaboration with
Reincke Naturfarben R&D, Lower Saxony.
Last updated
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