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Osmo Natural Oil Woodstain

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Osmo Natural Oil Woodstain is a semi-transparent exterior wood stain containing natural oils and UV filters to protect against the greying affects of sunlight whilst offering excellent protection against rot, mildew and weathering.

Ideal for all exterior woodwork including decking, it's easy to apply, enhances the wood grain and texture and dries to a satin-matt finish.

The clear Osmo UV Protection Oil 420 (Extra) can be mixed with any Osmo Natural Oil Wood Stain colour if a lighter shade is required.

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  • Overview


Osmo Natural Oil Wood Stain is perfect for all exterior woods including doors, windows and windowsills, carports, timber cladding, balcony, wooden decking, screens & fences, pergolas, summer houses garden furniture and more.


Wood surfaces must be clean, dry and frost-free prior to application. Osmo Natural Oil Woodstain is ready to use straight from the tin with no need to thin.

This product should be stirred thoroughly before use and periodically during application. If possible, apply the first coat to all sides of the wood before installation to offer the best all-round protection.

For additional protection against mould, algae, dry rot, woodworm and insect attack, use a good quality wood preservative such as Ronseal Total Wood Preservative or Barrettine Premier Wood Preservative prior to applying Osmo Natural Oil Woodstain.

Osmo WR Base Coat 4005 protects against blue stain and rot but doesn't contain an insecticide.

Note: It's important to allow the specified drying time of any preservative before applying this product.


Always do a test area first

Apply thinly and evenly along the wood grain with either a good quality hand brush or Microfibre roller, and spread well. Allow for good ventilation whilst drying. Apply a second coat as before. The final surface quality is dependent on the woods surface structure. We therefore always recommend to test the product on a small sample area before complete application.


When renovating, simply apply one coat of Natural Oil Woodstain to the clean and dry existing finish, this will usually be sufficient.

Cleaning of equipment

Application brushes and other equipment can be cleaned with white spirit.


Can be stored up to 5 years or more if the original tin is full, tightly closed and stored in a dry place. If product becomes thickened by frost it will regain its normal consistency under normal temperatures within 24-36 hours.

To preserve any oil that is left over, pour the remaining product into a smaller container such as a tin, jar or bottle and fill to the rim so there is no or minimal air in the container. Protect the stored oil from temperature extremes of heat and cold.


  • Keep out of the reach of children.
  • Avoid contact with skin and eyes. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
  • May produce an allergic reaction.
  • If swallowed, seek medical advice immediately and show this container or label.
  • Use only in well ventilated areas.

Warning: Wash out any used cloth impregnated with this product immediately after use or store in an airtight container (danger of self-ignition).

Drying Time

Drying time is approximately 12 hours depending on temperature and humidity. If applied correctly (thin coats) it is normally touch dry in 4-6 hours. Lower temperatures and/or high humidity can increase the drying time.


Note: The transparent colour tone of the finish will be influenced by the woods natural colour, causing the result to deviate from the colour shown on the colour chart. Lightly pigmented (coloured) transparent finishes have little protection against UV influences and are therefore not recommended for surfaces prone to strong sunlight.

The dried surface gives a light satin finish at first but will change to a satin-matt finish thereafter. To increase the durability of the finish we recommend, after thorough drying, to apply a top coat of Osmo UV Protection Oil Extra. This is not recommended for the white Osmo Natural Oil Woodstain finish (product code 900) as the UV protection oil can make the white look creamy or an off white.

All colour shades can be mixed with each other to create any number of alternative colours if required

  • Reviews

Osmo Natural Oil Woodstain reviews - Rating: 4.7 out of 5 stars, based on 74 reviews.

Filter:   All reviews (74)   5 stars (55)   4 stars (15)   3 stars (3)   2 stars (1)  

Haydon Edwards

 2.5L, Rosewood - 727
I was recommended this product by an alternative supplier. Fantastic product but take care to keep coats thin.
Mike Pickett

 750ml, Mahogany - 703
It was the wrong product for the job in hand. I should have tested it on a sample area first
I have some mahogany windows and doors which face south. Obviously they become bleached after a period of time. Usually I apply a proprietary mahogany stain and then varnish. I thought that I would try this product which I believed to be better. I should have tested the product on a sample piece of wood. After it had dried the stain was so dense that it looked as if I had painted the timber with Red-Oxide. The product is so durable that sanding it off was difficult. Clearly a first class product for staining softwood
Graham Rousell

 750ml, Red Cedar - 728
Excellent product with a good finish
This transparent oil based stain was just the job for revitalising the cedar wood on our hot-tub. It now looks like new again.

 750ml, Mahogany - 703
Excellent product.
Does the job and leaves a deep, long lasting finish. This is my second order of this finish; it has left my garden furniture looking as good as new.
Thomas Boyle

 125ml Sample, Chestnut - 704
Very easy to work with,covers an amazing area with such small amounts.
love this product,have been using it for nearly 16yrs although the stain I had been using is no longer avaiable (Mexican Spice)it was a wonderfuly rich colour although Chestnut comes close.Since trying a sample I have bought 2 1/2ltr and to-day am ordering more,so must be satisfied ***
Linda O'Toole

 2.5L, Chestnut - 704
Easy to apply and a great colour
Order delivered quickly and on time easy to use and dried to a great finish.
Michael Simmonds

 750ml, White - 900
Fantastic coverage and a great finish.
Fantastic coverage and a great finish. Be careful not to apply too much.
Daniel Smith

 125ml Sample, Oak - 706
Very easy to use looks good
Good product would definitely recommend. Only concern when used on prestained windows colour differs on certain parts.will wait an see if it peels or cracks in 6 months down the line.but would use again for sure
Terry Bleakman

 2.5L, Fir Green - 729
Easy to apply and the wood loves it
I discover Osmo Oil woodstain from my son who is in the Industrial build business. He used if for a wooden swimming pool in France I was extremely impressed on its coverage and use of use. having failed to find any other product with durability I turned to Osmo. Yippee is all I can say so far
Pier Damico

 125ml Sample, Pine - 700
Makes the timber gate look great
it might cost more but the colour/stain was better than other products i have used. Excellent result.

 750ml, Basalt Grey - 903
Does what it says on the tin
Not cheap, but you get what you pay for. And it goes a long way applied with a cloth. Left a good finish which beads really well. Doesn't look like it'll lose its protective qualities in a hurry. I've also used Osmo internally on oak doors, again applied with a cloth, for a beautiful one-coat smooth finish which didn't raise the grain. I've become a big believer in Osmo!
Doug Ryan

 2.5L, Basalt Grey - 903
Brilliant product and excellent service
Having pressure washed the ballastrade and rubbed it down i applied two coats of the woodstain to it all and have had nothing but positive comments from everyone who has seen it.
Heather Stevenson

 2.5L, Walnut - 707
Lovely on a Keops log shed
Needs 2 coats and it's fairly easy to avoid drips using a roller.
Geoff Hewitson

 2.5L, Walnut - 707
Expensive but high quality
An expensive, quality product that goes a long way. Easy to apply, although quite thin so beware of drips. I am using it on new gates and old windows and both take it very well. It seems to sit OK on top of previous stains etc that I can't get off on the windows and two coats gives a good satiny finish. So far it is working well.

 750ml, Mahogany - 703
Excellent product
This is easy to use and goes a long way ,made a great job of windows and doors ,was recommended by a neighbour who had used this type of paint about 5 years ago and it has weathered all storms and heat .Hope mine will be as effective.

 750ml, White - 900
Exactly what I wanted
I wanted a translucent white for a pine wood table and this was perfect. You need to really spread the colour thinly to achieve a translucent look where you can still see the grain, but even if you spread it a bit more thickly it still looks good.
David Leonard

 2.5L, Gard Green - 1415
I have used this product for many years, it covers well, is easy to apply and lasts well
Although not initially the cheapest wood protection product on the market, its finish endures well and on the wooden buildings in my garden it will continue to be used.
Sarah Rose

 2.5L, Oak - 706
Worth the extra £
I have treated two buildings clad in pine. Some wood I used the roller, also purchased from Wood Finishes, this produced a darker stain. I prefer the result of the oil rubbed in with a cloth - it really shows the grain. I did order 3 samples before settling on this oak colour.

 2.5L, Oak - 706
Great coverage
Good coverage over old decking, used a pressure washer first and although there was a few colour differences the Osmo has covered well.
Frank Siebert

 750ml, Red Cedar - 728
Very good!
Easy to apply, had 2.5 ltr container that lasted for more than 150 linear meters of siding boards, gives Red Cedar a wonderful colour, retains the natural patterns of the wood and penetrates pretty well into the wood, I am very impressed with this product!! Protecting from sun over time!!

per litre
12 hours
dry time
  • Protects against mould
  • Water repellent
  • Weather & UV-resistant
  • Satin-matt finish

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* Coverage can vary depending upon on the type of wood used and the amount of product applied. Litreage amounts shown above are total, not 'per coat' amounts.
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