Osmo External Oils

Osmo UV Protection Oil for External Doors

Osmo's UV Protection Oils are among the most trusted ways to finish and protect a timber external door. Made for the outdoors, Osmo UV Protection Oil Extra and UV Protection Oil Oak Extra give a micro-porous finish that lets the wood breathe while repelling water and shielding the timber from UV — so your door keeps its colour and resists warping, fading and greying. They're an ideal finish for our oak external doors and hardwood external doors.

A foundation and top coat in one, these oils protect against mould, algae and fungus and are simple to apply by brush or roller, drying quickly between coats with no sanding needed to recoat later. Extra gives a clear finish, while Oak Extra adds a light oak tint that enriches the natural colour of oak timber. For the best protection, oil every face and edge before the door is hung, build up two thin coats, and refresh once a year or when the finish looks dry — our guide on how to treat external wood doors walks through each step.

If Osmo isn't quite right, Impranol oil is another durable choice for exterior timber — or see the full external wood treatments range for all the options.