Current
Core Supplement
Certificate
Relates to polyester/glass reinforced, SBS polymer-modified bitumen membranes for bonded waterproofing flat/pitched roofs, or loose-laid or ballasted waterproofing on flat roofs. Key factors assessed were weathertightness, properties in relation to fire, resistance to wind uplift and mechanical damage, and durability.
Third issue, dated 1st September 2020. Supersedes the second issue, dated 19th June 2017. Originally certificated on 3rd June 2014.
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.
We connect trusted knowledge to customers' workflows – mitigating risk, increasing efficiency and accelerating innovation For more than 60 years, leading R&D and engineering-intensive organizations have relied on us to achieve on-time, on-budget delivery of complex projects and new products. We deliver an unparalleled combination of technical content and Artificial Intelligence (AI) technologies to surface answers from the vast universe of technical knowledge, both inside and outside the organization. In a single interface, we connect the dots between information scattered across many different sources, allowing technical professionals to make better, more informed decisions faster.