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However, due to the immaturity of the operation process between the external wall insulation and caused a structural wall is always two layers of skin , can not close

Combined , resulting in a leakage risks. As the doors and windows and wall seams empty wall insulation , causing cracks sealed

Lax water seepage . There are many solutions , but can not guarantee 100% no leaking , just to reduce the chances of

. There are warm and dry and French law , one is with the wall seams with waterproof mortar filling in the sub-frame with a one-component

Polyurethane waterproof coating brushing two times frames will charge installing silicone sealant between the window frame and sub-frame . There is

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