AW: doubleing the wall at expansion joint
# 4 ( Permalink)
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Water should never enter the gap. The gap must be sealt on the roof with 2 or 3 layers of waterproofung. The gap itself must be closed with some kind of filling (Weicheinlage in German), wich must be fireproof and ontop a PE round cord to compensate the movement forces of the two building parts to the waterproofing layers.
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