04:14AM | 11/06/02
Member Since: 11/05/02
1 lifetime posts
I just put down roofing felt last weekend on my new porch roof. I'm planning to put on the asphalt shingles this weekend and have noticed that the felt (it's been a bit cold and rainy) has begun to bubble and buckle a bit??? I've read some posts that say this is normal and will lay falt after it warms up. My question is this...Is this true? If so, should I wait until it's warm to shingle? Should I tear it off and paper and shingle in the same weekend? My roof has a very slow pitch to it and just want to make sure I do it right.
Thanks in advance for any help!

Jay J

04:01PM | 11/07/02
Member Since: 10/26/00
782 lifetime posts
Hi jerrymsmith,

Believe it or not, the purpose of the felt is to protect the sheathing and the rest of the house during construction until the shingles are laid. It's also used to do the SAME protection should the shingles get blown off during a storm, or something. What I'm trying to say is: Cracked or 'missing' felt in your situation shouldn't be a big deal.

Again, believe it or not, many, MANY roofers don't even use felt if the shingles are going on the sheathing right away. That's right! Depending, this is what some do. In your situation, if you don't have to wait too many days for the felt to warm up a bit, that's what I'd do. Most importantly, you do want the felt to lay as flat as possible. A warm sun will help you w/that. Also, if there are 'bubbles' or bumps in the felt, and you go to put the shingles on, the shingles won't lay flat. If there's a good wind BEFORE the roof has a chance to warm up, the shingles may get blown off.

My best to ya and hope this helps.

Jay J -Moderator

PS: God Bless America!


07:07PM | 11/12/02
I hope you got weathered off last weekend and get to read this before you lay your roof. I think that J J gave you a little bad advice. He is correct about most of the reasons for placing roofing felt. The additional one in your case is a low pitched roof. If your roof is 3/12 or less in pitch most shingle manufactures recommend double coverage felt, that is 36" paper laid with a 20" overlap, this is to protect against leaks caused by wind driven rain.


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