Understanding Use Class 2 (UC2)

Understanding Use Class 2 (UC2)

Date Published

21 September 2021

Document Type





Consumer and contract law require that any product offered for sale must be fit for its intended use and a wood product impregnated with preservative is no exception.

The minimum standards for the treatment of wood are set out in British Standard BS8417 (Preservation of Wood: Code of Practice). In this standard, the level of treatment is tailored to the application ‘Use Class’ of a wood product as defined in BS EN 335 (Durability of wood and wood-based products).

Use Class 2 is for end uses where wood is used indoors, above ground and within the building envelope, but with an occasional risk of wetting (from plumbing leaks for example).

Case studies

Timber is not a material commonly used in largescale office refurbishments in central London, but the Republic Masterplan at East India Dock demonstrates how it can successfully transform
a couple of tired 1990s office blocks into high quality sustainable and affordable workspaces and help to create a green, relaxing and biodiverse landscape around them.

The new Maritime Museum, completed in 2002, is set between the town centre and the large warehouses of the docks. Here it provides a focus for local identity and attracts the visitors on which the Cornish economy now depends.