Permavent Ltd - Envirotect Class B-s1,d0 Fire Walling Membrane

Permavent Envirotect Class B Fire Walling Membrane is a class B-s1,d0 fire rated membrane for use in walls.

It also provides high vapour permeability and superior water resistance. Envirotect Class B-s1,d0 Fire Walling Membrane can be used in all walling applications and has been specifically designed and developed for use in timberframe, light steel gauge, modular building and high rise construction.

Envirotect Class B-s1,d0 Fire Walling Membrane delivers first line protection to the external of the building during construction against driving rain, and wind-blown snow providing ultimate protection to the interior of the building.
The high-water vapour permeability provided from Envirotect Class B-s1,d0 Fire Walling Membrane ensures water vapour can pass through the structure safely into a vented cavity.

Developed and manufactured by Permavent using the latest technologically advanced methods available, Envirotect Class B-s1,d0 Fire Walling Membrane assures a high specification, class leading product solution.

Suitable Envirotect Class B-s1,d0 Applications:

  • Timberframe
  • Light steel gauge
  • Modular building
  • High rise construction

Features

  • Class B-s1,d0* fire rated construction membrane
  • High vapour permeability and superior water resistance ensures water vapour can pass through into a vented cavity
  • Can be used in all walling applications
  • Delivers first line protection to the external of the building against driving rain and wind-blown snow during construction
  • A high specification, class leading product solution
  • Available in 1.5m x 50m roll size

*Requires substrate behind the membrane to be class A

DIRECTORY

Tue, Oct 6, 2026 10:33 AM
Permavent Ltd
Permavent Ltd
11 Cumberland Drive
Weymouth
Dorset
DT4 9TB
United Kingdom
T: 01305 766 703
View Website

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