A ski chalet in the Rhône-Alpes region of France has benefited from the application of A. Proctor’s Group’s Wraptite-SA airtight membrane. The membrane has made a significant contribution to the building’s thermal performance by preventing lateral air movement, a key issue due to the chalet’s altitude of 1400m.
The lower walls of the chalet are constructed as an insulated concrete form, with the upper sections formed from timber posts with insulation in between.
The timber walls were covered with OSB panels, with the Wraptite-SA, self-adhering vapour permeable air barrier being applied in continuous pieces to overlap onto the ICF wall to make it airtight.
The high vapour permeability of Wraptite-SA allows any water vapour to escape the wall construct efficiently to avoid any interstitial condensation problems, ensuring good air quality and reducing the likelihood of mould, mildew and timber distortion.
To complete with finish, an aged wood was placed on the exterior.
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