high quality waterproof breathable membrane
KDBG150 breathable membrane is a synthetic roof underlay membrane, made of polypropylene. It is a functional membrane, it main function is to make the roof or wall breathable. The membrane is not only breathable, but also waterproofing. Because of this function, it can allow moisture to get out of roof or wall easily, and when the moisture meet cold tiles or shingles, it will be condensation as water-drop, and flow away on the breathable membrane, thus keep the inside insulation dry, avoid wet or mouldy.
KangDa Breathabe and Waterproofing Membrane (C90)
Another way to look at the way these products operate is to understand that their key function is not just to allow a building to breath, despite their name, as a building would happily be very breathable without any membrane in place at all!
KangDa vapour barrier roof membrane
Breathable membrane is a 3 layer structure, both side of non-woven fabric is water resistant, but breathable, the middle layer is the functional breathable film; it is 100% waterproof, and 1000-2000g/24h.m2 moisture permeability.
KangDa Breawarf Diffiusion Foils (C120)
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