Etex UK Insulation Ltd. Ursa cavity wall insulation. Ursa Cavity Batt 32 insulation for full fill application. Product sheet 2

Certificate 25/7449

British Board of Agrément, 2025
Etex UK Insulation Ltd. Ursa cavity wall insulation. Ursa Cavity Batt 32 insulation for full fill application. Product sheet 2 Download document

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Current

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Core Supplement

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Certificate

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 is available in a wider range of thicknesses, including options for multi-layer installation. 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.

History

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

Subjects

  • Building structure
  • Cavity wall insulation
  • Walls/masonry/cavity walls

Publisher History

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.

Information

NBS

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.

Accuris

We connect trusted knowledge to customers' workflows – mitigating risk, increasing efficiency and accelerating innovation For more than 60 years, leading R&D and engineering-intensive organizations have relied on us to achieve on-time, on-budget delivery of complex projects and new products. We deliver an unparalleled combination of technical content and Artificial Intelligence (AI) technologies to surface answers from the vast universe of technical knowledge, both inside and outside the organization. In a single interface, we connect the dots between information scattered across many different sources, allowing technical professionals to make better, more informed decisions faster.