NBS Source
I'm a manufacturer

Compare variants

Permavent RED Breathable Roofing Underlay - Vapour Open Roofing Membrane
Permavent RED Breathable Roofing Underlay - Vapour Open Roofing Membrane
Permavent RED Breathable Roofing Underlay - Vapour Open Roofing Membrane

Verified today

Permavent Ltd

Taped 50

Verified today

Permavent Ltd

Untaped 50

Verified today

Permavent Ltd

Untaped 75

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.
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

Specification

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 x 50 m.
1 x 50 m.
1.5 x 50 m.
Nail shank
MD/ CD, 140/ 230 N.
MD/ CD, 140/ 230 N.
MD/ CD, 140/ 230 N.
CoverageArea
50 m².
50 m².
75 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