Klober Permo Forte
Klober Permo Forte Breather Membrane
Klober Permo Forte has a unique plastic ripstop grid, which helps prevent tearing. A special inner layer allows water vapour to exit the roof space while preventing rainwater and moisture from entering the building. Each roll is 50 x 1.1m covering 55m ².
The durable, 4-layer fabric of reinforced microporous polythene film, with the outer layers of bond polypropylene. An internal reinforcing mesh makes this membrane tough and easy to handle. This extra-strong, vapour permeable underlay is suitable for installation on a warm or cold roof design.
|Weight, g/m ²
|Water Tightness (Class)
|Water Vapour Transmission (sd), m
|Water Vapour Permeability g/m ²/day
|Tensile Strength Longitudinal/transverse N/50mm
|Nail Tear Strength Longitudinal/transverse N
|-40 °C to +80 °C
|Vapour resistance, MNs/g-1
This breather membrane conforms with many standards including BS 3177, it is CE certified, holds a BBA certification (Cert No. 99/3622), and is covered by Klobers 10-year guarantee.
It is suitable to use in wind zones 1-4 if using battened laps and 1-5 if laps are secure with tape.