Felt Is Not Perfectly Flat! - Roofing/Siding - DIY Home Improvement | DIYChatroom

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Old 09-22-2006, 03:57 PM   #1
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Felt is not perfectly flat!

I decided that I was going to tackle roofing my 2.5 car garage by myself, over a 5 day period. Well, after ripping off two layers of asphalt shingles, I started rolling out 30# felt. It's a 8/12 pitch and the roll wouldn't stay in place as I rolled it out and tried to secure it. I tried to get it as flat and as straight as possible while using 1/2 staples to secure it temporarily. It looked pretty good, and I put several staples in to prevent ripping the paper as I walked on it. After it was all in place, I went back and secured it with plasti-cap nails (1 1/4"). I thought I got the paper flat, but the next day I came out and there were a bunch of ripples in it.

Will this cause a problem with the shingles lying flat?
Again, I have....
  • #30 felt
  • Architectural 30 year shingles
  • 8/12 pitch for a detached garage
I really don't want to redo the felt because I have to complete the project by myself!
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Old 09-22-2006, 05:32 PM   #2
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If it looked perfectly flat when you installed it, then 30# should dry and flatten out. This is why I like 30#

If it does not, or rips or slides due to the elements, you may have to cut and patch the wrinkles, or replace it all. I see this moreso with 15#, and doubt it should be a problem.
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Old 09-26-2006, 12:13 PM   #3
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X2, it should flatten as it dries out!
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