FILM FOR CONSTRUCTION AND FILM COMBINATION
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United States of America Patent
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Apr 29, 2013
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Sep 26, 2007
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A film (1) for construction with at least one functional layer (2) and optionally at least one other layer, especially a carrier layer and/or reinforcing layer (3), the functional layer (2) having a water vapor diffusion resistance (sd value) that is dependent on the ambient humidity. The functional layer (2) has at least one material (4) that can be obtained from a renewable raw material, especially at least one polymer based on a renewable raw material. A method of applying a functional layer to building construction involves installing the functional layer as a vapor control layer over rafters of a building either inside, outside or in a loop shape, or alternatively, installing the functional layer as a vapor control layer barrier in a sheeted roof, ceiling or façade region of a building as at least one of an underform web and a counter ceiling web.
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