Certificate 11/4854 BWK Dachzubehör GmbH. Lead-free flashings. Alto-lead flashing. Product sheet 1
Publication Year
2018
Document Status
Withdrawn
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
Superseded by the fourth issue, dated 8th July 2021. Date of third issue: 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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