roof waves

Old 04-26-10, 01:20 PM
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Join Date: Feb 2010
Location: usa
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roof waves

sister is shopping for a house. one house has a brand new roof, but when I went out the window to check it out, I saw waves. I think this was installed a few months ago over winter.

Is this a big problem, a small problem, not an issue, etc?

Old 04-27-10, 10:15 AM
Join Date: Jan 2010
Location: Maryland
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The decking material for the roof should have been installed with 1/8" gaps at the edges for expansion. Maybe they didn't. Or the shingles were butted tight and again no place for expansion. Could also be a poor roofover install. There is actually more to it than just putting shingles over shingles. The major issue is probably the look of it. There may be a warranty if it's a new roof.

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