Certificate 25/7449 Etex UK Insulation Ltd. Ursa cavity wall insulation. Ursa Cavity Batt 35 insulation for full fill application. Product sheet 1

Publication Year

2025

Document Status

Current

Abstract

Relates to a lightweight, non-combustible, unfaced glass mineral wool batt for use as full fill thermal insulation in external masonry cavity walls of domestic and non-domestic buildings up to 25 metres in height. The product is treated with a silicon-based water-repellent additive and may be installed in single or multiple layers. Key factors assessed include thermal performance, water resistance, condensation risk, fire behaviour, and durability. The product complies with updated Building Regulations including requirements for nearly zero-energy buildings, CO₂ emission targets, fabric energy efficiency, and sustainability standards, contributing to bronze and higher levels of sustainability under Scottish Building Standards.

Document History

22nd October 2025 edition. Supersedes URSA UK Ltd cert no. 09/4624 Product sheet 1, originally certificated on 7th August 2009 Fourth issue, dated 15th June 2021, third issue, dated 23rd July 2015; amended June 2017 and April 2019.

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