Permavent Envirotect Class B Fire Membrane - B-s1,d0 Fire Rated Walling Membrane
Verified by manufacturer 2 months ago
A class B-s1,d0 fire rated membrane designed and developed for use in timber frame, light steel gauge and modular buildings, providing high vapour permeability and superior water resistance.
Application
Can be used in all walling applications and has been specifically designed and developed for use in timber frame, light steel gauge, modular building and high rise construction.
Description
A class B-s1,d0* fire rated membrane for use in walls.
Features and benefits:
- Provides high vapour permeability (0.07 Sd to BS EN 12572) and superior water resistance (class W1).
- UV and heat resistant.
- Can be used in all walling applications and has been specifically designed and developed for use in timber frame, light steel gauge, modular building and high rise construction.
- Delivers first line protection to the external of the building during construction against driving rain, and wind-blown snow providing protection to the interior of the building.
- The high water vapour permeability provided ensures water vapour can pass through the structure safely into a vented cavity.
- Can be paired with Envirotect AVCL 150 Reflect (specified separately).
*Note that class B-s1,d0 fire rating requires the substrate directly behind the membrane to be class A.
To be fitted on the cold side of the building insulation in accordance with NHBC and BM TRADA recommendations and the manufacturers instructions.
General information
Color | Black |
Material | Polypropylene |
Shape | Rectangle Guidance for specification option: Supplied in rolls. |
Length | 50000 mm |
Width | 1500 mm |
Uniclass | |
CAWS | H22/20 Breather membrane H22/130 Breather membrane H20/10 Sheet cladding H20/155 Sheet cladding (attached to timber battens) H21/20 Breather membrane H21/130 Breather membrane H30/350 Breather membrane H30/50 Breather membrane H31/280 Breather membrane H31/55 Breather membrane H92/785 Breather membrane P10/320 Breather membrane P10/65 Breather membrane |
Specification data - Vapour-permeable sheets
Standard | To BS EN 13859-1. |
Performance characteristics | Reaction to fire, to EN 13501-1, class B-s1,d0. |
Class (minimum) | W1. |
Material | Manufacturer's standard.Guidance for specification option: Consult manufacturer for details. |
Form | Manufacturer's standard.Guidance for specification option: Consult manufacturer for details. |
Weight (minimum) | 115 g/m². |
Thickness (minimum) | Manufacturer's standard.Guidance for specification option: Consult manufacturer for details. |
Reflective face | Manufacturer's standard.Guidance for specification option: Consult manufacturer for details. |
Roll size | 50 x 1.5 m. Guidance for specification option: Length x width. |
Sustainability data
Contains Red List materials | No |
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |