Impranol Oils for External Doors

Impranol is the external oil we recommend for oak doors — a two-coat system that seals the timber against sun and rain while letting the natural grain show through.

Impranol Colour Protective Coating (0.75L)

(4)

£25.95 (inc VAT)

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Impranol Oils for Lasting Oak Protection

An external oak door lives outdoors, facing rain, sun and the seasons, and the finish you put on it is what keeps it looking its best and lasting for years. Impranol is the external oil we recommend above all others: a high-performance German system that seals the timber against moisture and UV while letting the natural oak grain show through.

Why we recommend Impranol

After testing many finishes over the years, Impranol gives the best colour, feel and durability for external timber. It forms a water-repellent, UV-resistant barrier that resists fading, drying and cracking, and it won't peel or blister like lesser treatments. For the full application guide and the two-coat system, see our external door treatments page.

Protects your whole doorway

The same oil that protects a door protects the timber around it. Treat your solid oak external doors on every face before fitting, and give the external door frame the same protection so the whole opening weathers together.

Explore the range

New to external doors? Our external doors hub walks through the options, or browse all external doors to find your door.

Frequently asked questions

Oil seals the timber against rain and UV, stopping it fading, drying or cracking. Even the best oak door will only last a few years outdoors if it isn't treated and maintained.