This course provides an intensive introduction to historic timber-framed structures. It begins by examining the original methods of framing and construction and then concentrates on problems, failures and methods of repair. The course comprises lectures, case studies, demonstrations, practical exercises, discussions and tours of the Weald and Downland Living Museum's timber buildings, with particular reference to the development of timber repairs undertaken at the Museum over more than forty years. It includes lectures on fungal decay, insect attack and their conservative treatments, with current research and recent case studies on the subject.