Roofs fail for a number of different reasons, and the consequent costs are high - not only for clients but for contractors and other professionals. Carl Cash draws on a long career in the roofing industry, having analysed 1500 different cases of roof failure. He discusses the source of the problem, the steps needed to prevent recurrence and the principal remediation alternatives. The book starts by setting out the duties of a building pathologist in the context of the modern roofing industry, defining failure and explaining its underlying causes. The main chapters then deal with the main...