black glue is wearing off, this glue surppose to seal

来源: builder1 于 2007-12-27 14:53:53 [] [旧帖] [给我悄悄话] 阅读数 : (226 bytes)

roof and brick (siding) wall. You can go up to do yourself if it is not too high, or hire somebody else to do the work. It may cause big problem later cause water inside of wall cannot get out. It may become a health hazard.

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