Shop

Permo forte is an extremely strong 4-layer vapour permeable underlay with a built-in safety grid. It is suitable for all pitched roofs. Permo forte should be laid in accordance with our installation details and BBA/IAB Certificates.

Product Features & Benefits

• UV stable for 4 months
• Double hydrophobically treated
• Allows the roof structure to breathe, weathertight
• Counterbattens only required on fully supported applications
• Limits air leakage in a sealed roof application
• Type LR underlay

Area of Application

• Suitable for cold and warm roofs.
• UK Wind Zone map
• Permo forte zones 1-4 at maximum overlap batten gauge

Material
Strong laminated sheet material, with outer layers of polypropylene, an inner layer of microporus polyethylene film and re-inforcement mesh.

Roll Sizes / Roll Weights / Product Code
Permo forte
50 x 1.5m (75m2) 10.9kg KU0044-07-1

Packaging
20 rolls per pallet

Certification
CE certified
BBA certified
IAB certified

Related Products
Underlay Support Trays
Adhesive tapes for joining vertical laps and repairs
Eaves closers for counterbattened roofs