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Saint-Gobain Construction Products
Risk of structural damages through PE vapour barrier films
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Which kind of film is suitable as a vapour barrier for steep roofs? The Fraunhofer Institute for Construction Physics (IBP) has devoted itself to this question with extensive calculations. They established the drying behavior of roof constructions with the use of different PE vapour barrier films with fixed sd value and the climate membrane Vario KM Duplex UV from ISOVER. The result: The climate membrane makes the drying-out of damp roof constructions possible in a satisfactorily short time and thus offers a sufficiently large big safety buffer against the risk of mould even with small leaks which are unfortunately occur frequently in construction. In contrast, the dehydration potential of PE films with fixed sd value is considerably lower, in particular, PE films do not have such a high safety buffer, so even with minor leaks there is already an increased risk of mould.
Further informations to climate membrane Vario KM Duplex UV from ISOVER at www.isover.de. E-Mail: dialog@isover.de.
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