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Certificate 25/7449 Etex UK Insulation Ltd. Ursa cavity wall insulation. Ursa Cavity Batt 35 insulation for partial fill application. Product sheet 3
Publication Year
2025
Document Status
Current
Abstract
Relates to a lightweight, non-combustible, unfaced glass mineral wool batt for use as partial fill thermal insulation in external masonry cavity walls, maintaining a minimum residual cavity of 50 mm. Suitable for domestic and non-domestic buildings without height restrictions, with additional requirements for buildings above 25 metres. Key factors assessed include thermal performance, water resistance, condensation risk, fire behaviour, durability, and compliance with updated Building Regulations covering energy efficiency, sustainability, and nearly zero-energy building standards.
Document History
22nd October 2025 edition.
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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