Permo Forte is a very strong, breathable, laminated sheet material, with outer layers of polypropylene, an inner layer of microporus polyethylene film and re-inforcement mesh. Suitable for non-ventilated cold and warm roof applications.
No ventilation of the roof void required.
Roll size 1.5m width x 50m length.
Colour: outer surface light grey, inner surface white. U.V. Stable for four months.
- Thickness (mm) 0.6
- Water Vapour Resistance BS 3177 (MNs/g) 0.2
- Sd Value EN ISO 12572 (M)² 0.02
- Water Vapour Permeability BS3177 (g/m2 /day) 1034
- Water Vapour Permeability EN ISO 12572 (g/m2 /day) ³ 1200
- Weight (g/m2 ) 175
- Tensile Strength DIN EN 12311-1
- Technical Documents
Very strong and robust vapour permeable underlay
Four- layer material
BBA and IAB Approved
Suitable for cold and warm roof applications
No ventilation of the roof void required
UV Stable for four months