Please note that this is a scanned copy of a paper originally published in 1997, so the text is not as clear as in documents created as pdf files.

Describes common defects in gutters and downpipes (e.g. undersized gutters, inadequately spaced pipes, damage caused by ice or frost, impact damage from ladders), and potential problems with valley and secret gutters, slopes and upstands on flat roofs, parapet gutters and hoppers. The paper also gives guidance on how to choose between repair and replacement of the whole installation.