breathable watrproof membrane roof underlayment suitable for all kinds of architectural roofing

     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.

KangDa CE approved house wrap similar to tyvek's house wrap   

        Breather Membranes are high performance vapour permeable breather membranes for installations within Timber Frame, composite Structural Insulated Panel (SIP) and wall panel system designs.

KangDa vapour barrier roof membrane

         Why use it?

KangDa Breawarf Diffiusion Foils (C120)  

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