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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 81 reviews.

Filter:   All reviews (81)   5 stars (63)   4 stars (14)   3 stars (3)   2 stars (1)  

Matthew Brumby

 2.5L, Larch - 702
Nice Product
Spreads very nicely and provides a great finish, what you would expect for the price.
Katherine Warren

 750ml, Oak - 706
Suitable, great assistance, easy to use
The helpline helped enormously in choosing which was the most suitable product. The product went on easily and has the desired outcome. Perfect!
Des Pike

 750ml, Oak - 706
Good results and easy to apply
This product was recommended when we had a new summerhouse 5 years ago and we have used it annually since. It is a pleasing colour, easy to apply and gives good protection.
Brian Vardy

 2.5L, Oak - 706
Very Pleased
Used to treat aged Church Gates, had a lot of very pleasing feed back from passers by and people in the church
Alex Chipperfield

 125ml Sample, Rosewood - 727
Great Oil Stain
Lovely dark colour with two coats, goes a long way!
Ros Hodges

 2.5L, Red Cedar - 728
Yummy - lovely smell and super colour
This oil was perfect - the colour is fairly strong and my boards were really thirsty as they are on the south west face and get all the weather. After applying a test patch as suggested I mixed the Red Cedar oil with the clear UV protection Oil Extra to give me the right shade. I applied two coats of this 50:50 mix and it looks fantastic
David Hales

 125ml Sample, Oak - 706
Good product & service experience
Good product & service experience
Haydon Edwards

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

 2.5L, Chestnut - 704
Great to work with and spreads amazingly.
Have used Osmo products for over 15yr's,my favourite woodstain was (Mexican Spice)which has been discntinued it was an amazingly warm rich colour which i would definately use again,but Chestnut came close and am very sattisfied.
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.
Paul Varela

 125ml Sample, Patina Grey - 905
Easily applied good strong colour
Goes on nicely decent coverage 2 coats required to achieve full colour.
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!

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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