Moisture permeable roofing underlay and house wrap

Description

Are you worrying about the "water-drop caused by weather changing, will make the insulation layer of roof or wall been damaged fast? Our breathable membrane will help you to solve this problem.

How the "water-drop" come out? In different temperature, the air will contain different amount of moisture in itself, the warmer the more moisture. In winter, the air close to inside of wall or roof will be warmer, and when it pass through insulation layer and touches the cold roof tiles or shingle, it will fast condensation and become "water-drop". These water drops will fall back to insulation material, because of this, the insulation material will become wet. As it is inside of roof or wall, it will not easy to dry. And then, the insulation layer material will be damp and mould, been damaged quickly.
The breathable membrane has the function of waterproof and air permeable. When use this membrane wrap the insulation material, it will not stop the air or moisture get through itself, and when the moisture come condensation, the breathable membrane will keep the water drops on outside surface of the membrane. As the breathable membrane is hydrophobic, the water drop will not stay on the membrane or been absorbent, but will be fall down around the membrane, until the edges of the membrane and get out of house. So the breathable membrane is mainly used for pitched (sloppy) roof or wall wrap.