Summary

The main functions of cladding on a timber frame building are to provide weather resistance and create the external appearance required by the client.

Materials for cladding can be subdivided into two main categories: those which are self-supporting (built from their own foundation and tied back to the timber frame structure) and those which are fully supported by the timber structure.

This Wood Information Sheet (WIS) describes the main types of cladding for use on timber frame buildings and outlines the broad requirements of building regulations to assist in the correct specification and installation of external cladding on timber frame structures.

Key Information

The main functions of cladding on a timber frame building are to provide weather resistance and create the external appearance required by the client.

For all cladding types, but especially where the cladding is self-supporting, allow for differential movement between the cladding and the timber frame.

National building regulations prescribe requirements for surface spread of flame (reaction to fire) for cladding adjacent to boundaries as well as rules limiting the area of combustible cladding.

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