Relates to formulated membranes for use as waterproofing layers in green roofs and roof gardens. Key factors assessed were weathertightness; properties in relation to fire; resistance to wind uplift, mechanical damage and penetration of roots; and durability.
Superseded by the sixth issue, dated 24th May 2019. Date of fifth issue: 6th April 2017. Originally certificated on 27th April 2010.
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.
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.
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