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 specific types of failure: fire shrinkage and roofing systems displacement calendar shrinkage foam insulation shrinkage and 'stretched' membranes plasticizer migration bitumen incompatibility built-up roofing felt porosity blistering thermal insulation instability foam insulation problems torch applications polymer dispersion asphalt-glass fibre shingle splitting lack of appropriate venting problems with cool roofing and problems with organic fibre-portland cement shingles. The book concludes with an outline of the principal rules for long service life roofing. Language: English