For a clear and natural finish, we recommend to apply two thin coats of Osmo UV Protection Oil Extra on any vertical surfaces such as doors, windows (including windowsills) cladding, screens and fencing. It is based on natural oils, is microporous, and does not crack, flake, peel or blister. It also prolongs the greying process of the wood by a UV-protection factor 12 in comparison to untreated wood. The finish also contains active ingredients to protect from mould, algae and fungal attack. A primer of Osmo WR Base Coat is recommended for softwoods.
For surfaces that are not vertical such as decking or garden furniture, we recommend a pigmented finish such as Osmo Decking Oils. The formulation of the pigments provide stronger protection - the darker the colour, the higher the UV-protection.
However, if you looking for a clear and natural finish for decking or garden furniture - Osmo Teak Oil provides protection for the wood while still allowing the natural greying process.