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Certificate 11/4854 BWK Dachzubehör GmbH. Lead-free flashings. Alto-lead flashing. Product sheet 1

Publication Year

2021

Document Status

Current

Abstract

Relates to a polyurethane-coated aluminium sheet with butyl adhesive backing for use as an alternative to lead flashing at abutments, flashings, dormers and chimneys on pitched roofs. Key factors assessed were weathertightness, properties in relation to fire, strength and durability.

Document History

Fourth issue, dated 8th July 2021. Supersedes the third issue, dated 21st May 2018. Originally certificated on 12th September 2011.

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.

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