OBEX CORTEX 0520FR Class B Breather Membrane is a W1-rated membrane with the added benefit of a 6-month UV exposure rating, and excellent tear-resistant properties.

The Class B fire-classification was achieved when tested in isolation to EN 13501-1.  Testing in isolation is the most stringent method of testing, and provides peace-of-mind regardless of how the membrane is installed, either free-hanging or secured to the face of sheathing boards or other substrates.

This testing also included all the compatible tapes and fixing systems recommended for installation.

To view the product on the Obex website, click here, or alternatively, to view it on NBS, please use the following link.

If you’d like to learn more, or if you need to discuss a potential project, please email Dan Norman, their Specification Advisor, at dan@obexuk.com