CLADDING SIDING AND FACADES Accoya® wood is ideal for external cladding, siding and façades where aesthetics, stability, durability and less frequent maintenance are required. Accoya® wood can be machine profiled to suit the building design and specifications and comes with a 50 year guarantee against rot and decay. Accoya® wood has an enhanced coatings performance and can last 3-4 times longer saving time, money and hassle and these coatings can be transparent, translucent or opaque coatings... whatever captures your imagination.