The Breath shield breathable roof membrane allows roofs to breathe, negating the requirement for traditional ventilation. It is suitable for use as a full supported or unsupported underlay beneath tiled or slated pitched roofs, in warm or cold non-ventilated and ventilated roofs.
Applicable to Zones 1, 2 & 3:
A breather membrane is a water-resistant material which will allow water vapour to pass through when there is a difference in humidity on opposite sides of it. Breather membranes are used on the outside of frame walls or roof under the exterior finished material such as Wall Cladding & Roofing tiles. They have three functions to perform.
- to shed moisture and restrict any rain water which penetrates past exterior finish from reaching the wall or inner rood space
- to perform as a breather material allowing moisture within the wall cavity or roof space to escape by diffusion through the membrane to the exterior, and
- to act as a wind barrier to restrict movement of air through the wall or roof.