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Certificate 24/7312 Soprema Insulation Limited. t/a Celotex. Celotex insulation. Thermaclass Cavity Wall 21 for full fill cavity walls. Product Sheet 2
Publication Year
2025
Document Status
Current
Abstract
Relates to Thermaclass Cavity Wall 21 for Full Fill Cavity Walls, comprising rigid polyisocyanurate (PIR) foam boards with a composite foil-facing on both sides, for use as full fill thermal insulation (with a residual cavity of up to 10 mm) in new external masonry cavity walls up to 25 m in height, in domestic and non-domestic buildings. Additional requirements apply for buildings above 12 m in height and further restrictions may apply based on the reaction to fire performance. The key factors assessed include mechanical resistance and stability, safety in case of fire, hygiene, health and the environment, safety and accessibility in use, protection against noise, energy economy and heat retention, sustainable use of natural resources, and durability.
Document History
Date of issue: 8 January 2025. Supersedes Certificate No. 16/5343
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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Tel: +44 (0) 1923 665300
