Probreathe A2 fire-rated breather membrane awarded BBA certificate
- Specify & Build
- Jul 3
- 1 min read
Probreathe A2 from The Proctor Group has been awarded British Board of Agrément Certification, further validating its technical performance and suitability for modern construction demands. Probreathe A2 is an airtight woven glass fibre membrane with a PU coating, combining breathability, water resistance and airtightness in a single, versatile layer. The BBA certification provides specifiers with added confidence in its reliability and compliance with UK building regulations.

Key features of Probreathe A2 include A2-s1,d0 Reaction to Fire Classification, increased airtightness over air permeable membranes, and a vapour permeable membrane for use either directly onto sheathing or over insulation. Probreathe A2 is suitable for both rainscreen and façade construction, and can be used for applications in relevant buildings and those over 11m /18m. It also allows for temporary protection of the building until the primary external covering is installed.
With this BBA certification, Probreathe A2 offers a combination of limited combustibility, airtightness, and vapour permeability – making it an optimal choice for safe, sustainable, and compliant building envelopes.