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Certificate 22/6247 Permavent Limited. Permavent breather membranes. For use in warm non-ventilated and cold ventilated roofs. Product sheet 1
Publication Year
2022
Document Status
Current
Abstract
Relates to flexible three-layer polypropylene sheet materials for use as roof tile underlays in warm non-ventilated and cold ventilated pitched roof systems. Key factors assessed were weathertightness, condensation , wind loading, strength, properties in relation to fire, and durability.
Document History
Date of first issue: 8th September 2022.
Publisher Information
British Board of Agrément
The British Board of Agrément have been providing authoritative and independent information on the performance of building products for over 40 years. The certificates they produce contain data on durability, installation and compliance with Building Regulations.
Bucknalls Lane
Watford
BBA
UK
Website: http://www.bbacerts.co.uk
Email: clientservices@bbacerts.co.uk
Tel: +44 (0) 1923 665300
