Report BR 185 Overroofing: especially for large panel system dwellings

Publication Year

1991

Document Status

Current

Abstract

Discusses briefly the factors to be examined by owners when considering remedial work for defective flat roofs on their housing stock. It is concerned with over roofing, and provides a technical framework for discussions between decision makers, consultants and component suppliers to help them to achieve an appropriate cost-effective solution. Overroofing is one of several options for remedying faults in flat roofs; it can range from simply improving the falls on an existing flat roof to erecting a new pitched structure and covering. The report sets out the options for repairs and over roofing; it describes how owners and their advisers might proceed when deciding whether to repair a flat roof or to convert it into a pitched roof by over roofing, and gives guidance on preparing a design brief. It does not address the economic details of whether to over roof or not, since each decision will need to be based on the owner's policy, resources and housing needs. It discusses the importance of inspecting and assessing the condition of a flat roof and examines the different methods of repair. It reviews the reasons for choosing over roofing and the options available, and describes the more widely available systems, such as increasing the slope of continuously supported 'flat' roofs, tiled timber roofs, metal sheeted roofs, and canopies, all of which may or may not incorporate thermal insulation.

Document History

Included in BRE Report 469 - Non traditional houses.

ISBN

9780851254609

Publisher Information