Document Status
Current
Supplement
Core Supplement
Series
Guidance Note
Abstract
Guidance on installing a Water Flow Reducing Layer (WFRL), with specific instructions for inverted green and inverted blue roofs.
History
March 2020 edition.
Subjects
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Liquid applied coatings
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Roofs
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Coverings and surface finishes
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Building structure
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Waterproofing/damp proofing
Publisher History
The Liquid Roofing and Waterproofing Association raises awareness of the technical and financial benefits of liquid applied waterproofing systems and provides independent advice for specifiers.
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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