Breather Membrane

Breathable membrane which allows improved ventilation in the roof space as well as greater protection against wind, rain and snow. Multivap has a high vapour permability allowing vapour to pass freely through to evaporate into the atmosphere. It should be draped over the rafter ends directing any water ingress into the gutter. A pre-fabricated gutter drip must be used (see our eaves protection range). Manufactured from two layers of non woven polypropylene spunbound to form flexible breather membrane for supported or unsupported applications. Grey on the external side.