Pressure Treated Sheds

Pressure-treated sheds use timber that's been factory-treated with preservative chemicals under pressure, soaking the chemical deep into the wood grain rather than just coating the surface. The result lasts 15-20 years before needing significant repair, versus 6-10 years for surface-treated softwood. Buy Sheds Direct, Cherry Lane Garden Centres and QD stores between them stock 550+ pressure-treated sheds covering £42-£2,803. Treatment grade matters: ground-contact treatment (UC4 grade) is the spec for posts, base rails and any timber touching soil; above-ground treatment (UC3 grade) is fine for cladding and roof timbers. Most domestic pressure-treated sheds use UC3 cladding with UC4 base rails. The "Tanalised" brand name is the dominant UK supplier of pressure-treatment chemicals, and the green-tinted timber colour is recognisable. Pressure-treated timber doesn't need annual re-coating, unlike standard softwood; expect to refresh the finish every 3-5 years rather than annually. Filter by size and roof style in the grid below.