Document Status
Withdrawn, Document not available for download
Supplement
Building Supplement
Series
Technical Bulletin
Abstract
Guidance on the design of valleys for pitched roofs to ensure adequate drainage for the discharge of rainwater.
History
November 2015 edition.
Supersedes the 1991 version.
Subjects
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Building structure
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Pitched roofs
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Coverings and surface finishes
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Roofs
Publisher History
The National Federation of Roofing Contractors is a trade association representing the roofing industry, championing high standards of workmanship and business practice through a strict code of practice and independent vetting procedure, including site inspections and adherence to the Government endorsed TrustMark standards. Publications include a series of technical bulletins.
Information
NBS
NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.
Accuris
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