Summary
Three-layer air and vapour open membrane for use as a pitched roof underlay.
Three-layer air and vapour open membrane for use as a pitched roof underlay.
Three-layer air and vapour open membrane for use as a pitched roof underlay.
Application
Suitable for use in all pitched roofing underlay applications.
Suitable for use in all pitched roofing underlay applications.
Suitable for use in all pitched roofing underlay applications.
Description
Permavent RED, a heavy-duty vapour-permeable roof membrane with superior tensile strength and nail-tear resistance. Permavent Red provides a high-performance secondary barrier to wind and rain both during and following the construction process.
Features and benefits:
- Strong breather membrane.
- Resilient roofing underlay.
- Suitable for use with solar panels.
- W1 water resistance.
- BBA certified.
- Three-layer membrane.
Available in three formats
- Taped 50 – 1 m × 50 m roll with integrated double‑sided tape
- Untaped 50 – 1 m × 50 m roll, ready for use with site‑chosen tapes or sealants
- Untaped 75 – 1.5 m × 50 m roll for wider coverage when desired
Permavent RED, a heavy-duty vapour-permeable roof membrane with superior tensile strength and nail-tear resistance. Permavent Red provides a high-performance secondary barrier to wind and rain both during and following the construction process.
Features and benefits:
- Strong breather membrane.
- Resilient roofing underlay.
- Suitable for use with solar panels.
- W1 water resistance.
- BBA certified.
- Three-layer membrane.
Available in three formats
- Taped 50 – 1 m × 50 m roll with integrated double‑sided tape
- Untaped 50 – 1 m × 50 m roll, ready for use with site‑chosen tapes or sealants
- Untaped 75 – 1.5 m × 50 m roll for wider coverage when desired
Permavent RED, a heavy-duty vapour-permeable roof membrane with superior tensile strength and nail-tear resistance. Permavent Red provides a high-performance secondary barrier to wind and rain both during and following the construction process.
Features and benefits:
- Strong breather membrane.
- Resilient roofing underlay.
- Suitable for use with solar panels.
- W1 water resistance.
- BBA certified.
- Three-layer membrane.
Available in three formats
- Taped 50 – 1 m × 50 m roll with integrated double‑sided tape
- Untaped 50 – 1 m × 50 m roll, ready for use with site‑chosen tapes or sealants
- Untaped 75 – 1.5 m × 50 m roll for wider coverage when desired
Color
Red
Red
Red
Material
Polypropylene
Polypropylene
Polypropylene
Shape
Rectangle
Rectangle
Rectangle
Length
50000 mm
50000 mm
50000 mm
Width
1000 mm, 1500 mm
1000 mm, 1500 mm
1000 mm, 1500 mm
Warranty description
15 year
15 year
15 year
SKU Code
RED75
RED50TAPED
RED50
GTIN/EAN
5060747290152
5060747291005
5060747290145
Specification
Classification data
Standard
To BS EN 13859-1.
To BS EN 13859-1.
To BS EN 13859-1.
Class (minimum)
W1.
W1.
W1.
Third-party certification
British Board of Agrément (BBA) certificate.
British Board of Agrément (BBA) certificate.
British Board of Agrément (BBA) certificate.
Performance criteria
-
-
-
Water vapour properties
Water vapour resistance (Sd) to EN 12572: 0.02 m.
Water vapour resistance (Sd) to EN 12572: 0.02 m.
Water vapour resistance (Sd) to EN 12572: 0.02 m.
Fire performance
Reaction to fire: To BS EN 13501-1, Class E.
Reaction to fire: To BS EN 13501-1, Class E.
Reaction to fire: To BS EN 13501-1, Class E.
Tensile properties
To BS EN 12311-1 (MD/ CD), 350/240 N/50mm.
To BS EN 12311-1 (MD/ CD), 350/240 N/50mm.
To BS EN 12311-1 (MD/ CD), 350/240 N/50mm.
Recycled content
100%.
100%.
100%.
Material
Polypropylene, non-woven.
Polypropylene, non-woven.
Polypropylene, non-woven.
Form
Spun-bonded.
Spun-bonded.
Spun-bonded.
Weight (minimum)
160 g/m².
160 g/m².
160 g/m².
Additional properties
Roll size
1.5 x 50 m.
1 x 50 m.
1 x 50 m.
Nail shank
MD/ CD, 140/ 230 N.
MD/ CD, 140/ 230 N.
MD/ CD, 140/ 230 N.
CoverageArea
75 m².
50 m².
50 m².
Elongation
MD/ CD, 70/ 70%.
MD/ CD, 70/ 70%.
MD/ CD, 70/ 70%.
Adhesive
-
Double sided, air and water-tight, three-dimensionally formable acrylic adhesive.
-
Sustainability data
Contains Red List materials
No
No
No
Country of material origin
United Kingdom
United Kingdom
United Kingdom
Country of product manufacture
United Kingdom
United Kingdom
United Kingdom
Material
Polypropylene
Polypropylene
Polypropylene
Recyclability
Recyclable
Recyclable
Recyclable
Recycled content
100 %
100 %
100 %
Expected Life
Lifetime
Lifetime
Lifetime