They also repel any water most commonly rain that tries to enter the building.
Warm roof breather membrane.
Cold warm roof application.
Warm roofs or roofs without adequate ventilation require breather membrane although again the breather membrane should not strictly be used in isolation in accordance with bs5250.
Vapour air permeable breather membrane.
This means that insulation remains effective and the likelihood of damp and mould occurring is greatly reduced and the structural integrity of the building remains secure.
Roof membranes are used to protect the building beneath the roof tiles so that insulation timber and other materials aren t exposed to the wet.
3 layer spun bonded membrane.
Breather membranes are installed to the outer side of the insulation for example either over or under the counter battens on a pitched roof and allow water vapour to escape from inside a building without the need for ventilation.
A breather membrane prevents moisture from entering the roof space and can in some cases allow moisture to leave the roof space.
Sales and technical advice on 01250 872 261.
Light grey surface prohibits glare.
The primary job of a roof membrane is to ensure that water cannot ingress into the structure so it can t cause damp and mould.
Bba certified for unventilated warm cold roofs.
Permavent breather membrane utilise the world s leading medical technology to produce the best quality construction breather membrane in the world.
Non breathable membrane can often be confused with a vapour control layer but shouldn t be.
Choose from tlx breathable pitched roofing felt tyvek s supro breather membrane klober permo breather membrane and protect membranes as well as several others from brands such as cromar harcon powerlon and easy trim.
Tyvek and airguard in warm roof applications.
Vent3 light is a lightweight breathable roof underlay for cold and warm roof applications which give major benefits over traditional roof underlays.
Here insulation is installed at rafter level using rigid and or semi rigid insulation.
Permavent apex complies with nhbc requirements for cold warm roof constructions without the need for any ventilation under the nhbc warranty.