Verified by manufacturer 3 months ago
BBA Agrément Certificate
Certificate type
An air and vapour-permeable, highly water-resistant roofing underlay.
For use as a pitched roof underlay (vapour-permeable roofing felt) fixed beneath tiles and slates.
Proctor Air® is an air and vapour permeable, highly water resistant roofing underlay. Its characteristics allow even very complex pitched roofs to breathe, without the need for air gaps or secondary venting.
The high performance melt-blown core of Proctor Air allows natural air movement to ‘supercharge’ the passage of moisture vapour from the roof space, significantly reducing condensation in the roof space.
Features and benefits:
Color | Purple |
Material | Polypropylene |
Shape | Rectangle |
Length | 50000 mm |
Width | 1000 mm 1500 mm |
Warranty description | 15 year |
Uniclass | |
CAWS | P10/320 Breather membrane H67/24 Vapour-permeable underlay H65/22 Vapour permeable underlay H61/22 Vapour-permeable underlay H60/22 Vapour-permeable underlay H65/235 Vapour-permeable underlay H62/235 Vapour-permeable underlay P10/65 Breather membrane H62/3 Roof slating H61/235 Vapour-permeable underlay H60/235 Vapour-permeable underlay H67/290 Vapour-permeable underlay |
Standard | To EN 13859-1. |
Performance criteria | |
Water vapour properties | Water vapour resistance to EN ISO 12572, 0.015 m; 0.075 MN·s/g.Guidance for specification option: Hydrostatic Head of Water to ISO 811, 101.6 cm. |
Fire performance | Reaction to fire: To EN 13501-1, Class F. |
Tensile properties | Tensile strength before ageing to EN 12311-1, 420 N (MD); 336 N (CD). |
Class (minimum) | W1. |
Material | Polypropylene. |
Weight (minimum) | 170 g/m². |
Air permeability | To EN 12114, 35 m³/m².h.50Pa. |
Elongation to break | To EN 12311-1, 95% (MD); 94% (CD). |
Roll size | 1 x 50 m. 1.5 x 50 m. |
Tear resistance MD/CD | To EN 12310-1, 188 N (MD); 172 N (CD). |
Recyclability | Recyclable Guidance for specification option: Polypropylene is recyclable. Mechanical recycling is the primary option, depending of the requirements of the application and the intended article specification. It can also be valorised for energy recovery, its high calorific value is around 44 MJ/kg. Polyolefins are neither biodegradable nor compostable. |
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