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window frame to window buck sealing – GreenBuildingAdvisor
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Out of interest:
is the use of expanding foam strip known in the states? It would simplify installation.
Like that one:
Buy VKP Trio 600 sealing tape standard online | WÜRTH
The foam has a different pore size and configuration across the width, so is watertight and permeable outside and airtight and a vapor retarder inside. Will stay flexible and continues to maintain sealing function.
I reckon that this should simplify the installation of inni windows and be a second layer of defense also for outer windows.
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