Many of the questions TRADA (the Timber Research and Development Association) receives through its advisory service relate to timber cladding - how to specify it, what species to use, what to expect in use and maintenance requirements. The first edition of this publication was created to address these questions in more detail and to document good practice. External Timber Cladding is now established as the definitive guide to timber cladding and design, and this second edition reflects significant growth and innovation in the market for cladding materials. Refined details and technical information in keeping with the regulatory framework are included on environmental and certification aspects of cladding, pre-finished cladding, modified timber, and manufactured panels. Updated advice on preservative treatments and surface protection and new photographs and drawings have been added throughout the book.