Osmo UV Protection Oils are clear, satin finish, UV rated oils for new timber joinery, pergolas, trellis, timber garden furniture and planter boxes etc. They are not suitable for timber decking.
The finishes are UV Protection Oil 410 and UV Protection Oil - Extra 420. The UV resistance is the same for both products.
The 420 contains biocides. These "Extra" ingredients help fight mould and fungal attack, and should only be used on external timber surfaces where food will not be present.
The 410 is biocide free, which means it can be used internally on timbers such as window frames, french doors etc. It can also be used outdoors on items such as timber garden furniture, where food may be present.
UV Protection Oils are not suitable for use on horizontal "walk on" surfaces such as decks, as the finish can become quite slippery when wet.
On a 2 coat application, the UV Protection Oils block the greying process of the timber by a UV protection factor of 12, when compared with untreated timber. This is a similar principle to the SPF system of sunscreens we use on ourselves.
In New Zealand, due to the high UV we have, the clear UV Protection Oils have a lifespan of 3-4 months in fully exposed weather conditions, and 9-12 months in areas that are weather protected. For longer protection, we recommend using one of the tinted UV Oils, which are available in 6 colour tones, or one of the heavier pigmented Natural Oil Woodstains.
Osmo UV Protection Oils are water and dirt resistant, and are moisture regulating - reducing swelling and shrinkage of the timber.
Coverage will vary depending on the timber.
Easy to apply and maintain, the oil highlights the natural tones of the timber by giving it a "wet look".