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Core Supplement
Certificate
For use as an unsupported or fully supported underlay for tiled or slated pitched roofs. Monarperm 450 prevents the ingress of wind-blown rain or snow. Advantages during installation include resistance to tearing, its flexibility at low ambient temperatures, and high slip-resistance surface.
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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