Osmo UV Protection Oil
Osmo UV Protection Oil
£21.30 - £65.17 (£17.75 - £54.31 Ex. VAT)

Osmo UV Protection Oil

  • Protects against the harmful effects of the sun’s UV rays
  • Based on natural, renewable resources
  • Protects against mould, algae and fungai attack
  • Microporous, breathable surface
  • 12 hours drying time
  • Coverage 16m² per litre per coat
  • Easy to apply with brush or roller
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£21.30 - £65.17 (£17.75 - £54.31 Ex. VAT)

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In Detail

Exterior timbers turn grey or silver over time as a result of exposure to the sun and rain. Osmo UV 420 is a high quality oil that protects against the greying effect of the sun's UV rays on exterior wood by a factor of 12. It can be applied with a brush or mohair roller to a wide range of exterior soft and hard woods including pine, larch, teak, oak and bamboo. It offers superb durability against weathering with an added biocide to combat insect attack and fungal growth. Easily applied, Osmo UV Protection Oil 420 dries to a satin-matt finish that will not peel, flake or blister. Available in 750ml and 2.5L sizes.

Information Downloads



Application Method Brush \ Roller
Clean Up White Spirit
Coverage 24 m² per litre
Drying Time 12 hours
Usage Exterior
Reviews (5)

Customer Reviews

Overall rating 3.5 out of 5 based on 5 reviews

Newest Customer Reviews



24 November 2017

First rate and proven with time

Used to protect the beams of a pine wood pergola on a remote Greek island. Applied two and a half years ago and still going strong in spite of salinity, high wind and temp range 2C to 40C. Would highly recommend. I used their fungicide then two coats of the product. Because I ran out of the product I had to use the local Greek version on the four 45* struts. The observable difference makes the argument that this product is expensive but cheap at the price.

Jools B

5 October 2017

Ok on uprights, not good on cills & horizontal beads

Used on European oak windows. Looks great initially but after 4 or 5 months it hadn't lasted on the cills & horizontal beads. Really disappointing as we'd changed from another product to Osmo thinking it was better. Won't be using it again.


20 December 2015

Good product for external hardwood

This product works well for hardwood that is outside, though as the product documentation says it is intended for vertical surfaces. So I would not be too surprised to see it do badly on window sills, as commented by another reviewer. At test board in a SW facing situation has after one summer weathered much better than another board (from the same piece of wood) that was treated with tung oil. 12 hours to dry would be a touch optimistic in the British climate, but other than that it is as the manufacturer describes. The natural version does leave the wood looking much more natural than tung oil. Not yet seen any sign of flaking or blistering.

Rob Bailey

20 April 2015

Goes on easily, dried quickly, looks good

Used on exterior hard wood on boat. It was easy to use and gives a good finish.
Put some on at start of winter, no deterioration by April. Will see how it fares in the sea atmosphere and sun. Maybe 5 stars if its good.
So far very pleased, much better than boiled linseed oil.

Red barn man

16 January 2015

Disappointing performance given the price

Have used this on new oak windows - 2 coats. The finish is initially good and it has performed reasonably well on vertical surfaces but the sill and beads where water sheds less quickly have started degrading after just 6 months allowing the wood undermeath to turn black. Drying time is rarely as short as 12 hours, in cold weather it can take a couple of days. (I have also used the non-UV version and that dries more quickly). Will try again in the late spring and put on 3 or 4 coats to see if this holds up better.
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