应该是1.因为壁炉内部无水.

回答: Two possibilities: 1)Flashing between brick and roofborisg2010-12-21 16:49:48

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If the insert is intact, the inside can be dry -borisg- 给 borisg 发送悄悄话 borisg 的博客首页 (233 bytes) () 12/21/2010 postreply 18:18:13

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