Probreathe® A2 Fire-Rated Breather Membrane awarded BBA certificate

The Proctor Group, a leader in specialist membranes, is proud to announce that Probreathe® A2 has been awarded British Board of Agrément (BBA) Certification No. 25/7384, 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. Now BBA certified, the membrane provides specifiers, contractors, and developers with added confidence in its proven reliability and compliance with UK building regulations.

“We’re delighted that Probreathe A2 has achieved BBA Certification,” said Pamela Howat, Senior Technical Advisor at The Proctor Group. “This accreditation confirms what our customers already know – that Probreathe A2 is a market-leading membrane that delivers performance, especially in the most demanding applications.”

Key Features of Probreathe A2:

• • A2-s1,d0 Reaction to Fire Classification
• • Increased airtightness over air permeable membranes
• • Vapour permeable membrane for use either directly onto sheathing or over insulation
• • Ideal for rainscreen and façade construction
• • Suitable for applications in relevant buildings and those over 11m /18m
• • Allows temporary protection of the building until the primary external covering is installed

With this BBA certification, Probreathe A2 is now one of the few breather membranes on the market offering a combination of limited combustibility, airtightness, and vapour permeability — making it an optimal choice for safe, sustainable, and compliant building envelopes.

The Proctor Group is a UK-based manufacturer of building products, committed to delivering sustainable solutions for the built environment. Our range includes membranes, airtightness products, and insulation systems certified to the highest standards, including Passivhaus and BBA accreditations.