Relates to thermoformed 3mm minimum thick, clear polycarbonate sheets, for use on flat roofs to provide natural light and ventilation. Key factors assessed were light and solar transmittance, thermal properties, condensation risk, strength and stability, weathertightness, behaviour in relation to fire and durability.
Date of second issue: 19th December 2011. Supersedes the first issue, dated 13th July 2009. Originally certificated on 24th December 2001.
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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