Cornish J.P. Hendry I.W.L.
Bibliographic info:
Building Research Establishment, current paper 1/75. 6p 4 figs, 3 refs.Proceedings Conference, "Roofs and roofing" 9-13 Sept. 1974.

Sets out in general terms the design principles for avoiding condensation in roofs, pitched and flat. Recommends providing arain shield permeable to water vapour, a vapour barrier on thewarm side of the structure and in roofs with air spaces to ventilate the air space or blow dry air into the roof space.Discusses application of these to particular types of roofs.