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-   -   felt paper and rain (http://www.diychatroom.com/f9/felt-paper-rain-107203/)

critterlover918 06-09-2011 09:07 PM

felt paper and rain
 
Hi - i'm getting my roof redone but we discovered the front porch was completely rotted. It took a couple of days to tear down the porch and rebuild. The roof above the porch is felted with #30 paper and now it's raining. Is that really ok to have just the felt on in the rain for the next couple of days. It kind of makes me nervous.

sixeightten 06-09-2011 09:10 PM

Ideally, you should only tear off what you can cover with shingles in the same day. Felt paper is very prone to ripping and coming loosed during heavy winds. I hope you didn't use a slap stapler on it.

siding247 06-09-2011 09:12 PM

its called a tarp

loneframer 06-09-2011 09:47 PM

Felt will only hold out water for a short period of time. As felt is wetted, it will expand and begin to wick water through.

It's actually a neat process, but not great for long term water hold out.

critterlover918 06-10-2011 05:38 AM

I'm not the one puting the roof on. I hired a roofer and he insisted this is fine, but we're expecting more rain before he finishes next week. I can't go up on the roof and tarp it sothat's why i'm asking what i should do?

Slyfox 06-10-2011 05:48 AM

Assuming it's installed properly, 30# felt can set exposed to the weather for a couple to a few weeks with out any problem.

critterlover918 06-10-2011 05:53 AM

I just went out to look at it after last night's rain and it's kind of rippled. Will that straighten back out when it dries completely or should i make him tear it off. I'm replacing an old roof that's all rippled and i don't want another. (not the same roofer)

Slyfox 06-10-2011 07:10 AM

Quote:

Originally Posted by critterlover918 (Post 664475)
I just went out to look at it after last night's rain and it's kind of rippled. Will that straighten back out when it dries completely or should i make him tear it off. I'm replacing an old roof that's all rippled and i don't want another. (not the same roofer)

Felt expand/contacts with the weather, it will straighten out if the roofer/s allow it time to do so.
(Time as in an hour or so to dry out, not days or weeks)

Roofster 06-10-2011 06:31 PM

Felt paper can wrinkle when wet. IMO you do not rip what you cannot roof. If for some reason you cant finish what you've ripped it should be tarped.

loneframer 06-10-2011 06:37 PM

Quote:

Originally Posted by critterlover918 (Post 664475)
I just went out to look at it after last night's rain and it's kind of rippled. Will that straighten back out when it dries completely or should i make him tear it off. I'm replacing an old roof that's all rippled and i don't want another. (not the same roofer)

The rippling is an effect of the felt absorbing moisture. When it dries, it will flatten back out and typically shrink just a bit from it's original size.

Contrary to popular belief, felt paper, or tar paper as most folks call it, is not waterproof.

More accurately stated, it is moisture resistant at best.

Whether or not that is a pro or con is a long argued matter.

critterlover918 06-10-2011 06:44 PM

Thanks - i talked tom y roofer earlier. He does not plan to leave that paper on. He will rip off and replace with new paper when he does the roof this week.

Slyfox 06-11-2011 06:12 AM

Quote:

Originally Posted by critterlover918 (Post 664943)
Thanks - i talked tom y roofer earlier. He does not plan to leave that paper on. He will rip off and replace with new paper when he does the roof this week.

Kewl, I'm glad he put your worries to rest.

Dave88LX 06-14-2013 12:27 PM

Quote:

Originally Posted by Roofster (Post 664928)
Felt paper can wrinkle when wet. IMO you do not rip what you cannot roof. If for some reason you cant finish what you've ripped it should be tarped.

I'm not a roofer, just a homeowner, so bear with me. When you put down shingles, you work from the bottom up, so how does this work? Or are you talking more side-to-side?

jagans 06-14-2013 02:07 PM

Quote:

Originally Posted by Dave88LX (Post 1201073)
I'm not a roofer, just a homeowner, so bear with me. When you put down shingles, you work from the bottom up, so how does this work? Or are you talking more side-to-side?

Boy, you move around a lot. You work from the eaves to the ridge usually from left to right. The directions are on every bundle of shingles you buy, and on the manufacturers web site. Pay strict attention to where you nail. Most newbies nail too high and miss the headlap, possibly resulting in tab lifting and blow off. Use six nail method per shingle with three tabs.

Oh-Fudge 06-14-2013 02:37 PM

Just passing by and read this and am curious why the guy above said not to use a slap stapler on roofing felt? How do you attach it?


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