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I had a metal roof professionally installed on a house I am constructing. We used two layers of standard housewrap for the dormers and chimney, 30# felt underlayment for the roof, and standard metal rib panels. In spite of the flashing and taping that the professional did, one dormer and the chimney are still leaking. He said it was because the siding had not yet been installed. Unfortunately, I had spray foam insulation installed, so now I will not be able to see the leaks as easily and I'm worried that installing the siding will not solve the problem.
Is siding really instrumental in keeping water out during heavy rainstorms? Would the absence of the siding be a likely cause of a pretty significant puddle (about 2 feet in diameter) in my house?
Another question: the flashing was installed OVER the housewrap that was covering the walls of the chimney and dormers. Should the flashing be over or under the housewrap? Could this be contributing to the problem?
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I would suggest working in housewrap that comes down over the siding particularly if it is to be left open for an extended period.
That said, in many applications the housewrap will be beneath the flashing.
I cannot guarantee siding will resolve the issue but I will say that it certainly could.
9/30/2009
Or copy this URL: https://www.metalroofing.com/spirit/comment/13954/find/Isaiah Industries, Inc.
10/6/2009
Or copy this URL: https://www.metalroofing.com/spirit/comment/13955/find/Isaiah Industries, Inc.
10/6/2009
Or copy this URL: https://www.metalroofing.com/spirit/comment/13956/find/