methinks

Tue Jul 26, 2005 2:59 pm

Good morning to all.

My new roof was about 80% installed when up popped a thundershower here in southwest Florida. After the storm, with the felt still wet, my roofer insisted on laying the remaining shingles despite GAF's instructions, "material must be dry prior to application of shingles". Will this become a problem for me? If so, how so?

Thanks, Jon

G-Tape

Tue Jul 26, 2005 3:21 pm

It shouldn't be a problem.

dougger222

Tue Jul 26, 2005 3:24 pm

Most all manufacturers clearly say not to lay over wet materials but I've never had a problem doing it. Doing a tear off if it started to rain I'd be on the roof trying to get as many shingles on rather then sitting in the truck waiting for the house to leak.

What happens when the shingles are sitting at the lumber, manufacturer, or roofing yard when it rains? They get wet! The sun will dry out the shingles pretty fast in Florida or anywere in the summer for that matter.

QRFL

Tue Jul 26, 2005 6:08 pm

every company here does it all the time

Pride_roofing

Tue Jul 26, 2005 10:22 pm

If you let the felt dry you will not have any problems but ofcourse dougger is the roofing god. According to GAF and Certainteed, WHen laying over wet felt it will sometimes look flat when you leave but buckle after that. Common sense is applied would you honestly on your home shingle on a wet deck or over wet felt to many companys use cheap felt that telegraphs and you cant see it untill later when it expands and contracts. I learned the hard way on a 8/12 bout 5 years ago. A week later it was buckled all over the place and GAF did not warranty it due to the flet problem. New construction in my area are left out for weeks due to lazy and incompentet companys that just collect paychecks. I guess if people read the install label once in a while things would be so gray area style. We had this agruement a week ago and simply put call your shingle rep and they will say not reccomended if they know anything. Company should have bought a tarp, its a tax write off.

methinks

Wed Jul 27, 2005 4:30 pm

Thanks for all the replies. Thought I would share some other infomation I have picked up on this subject. I live near Punta Gorda, FL where hurricane Charlie hit last August, so the Home Depot guys have had a lot of experience with roof materials and roofers. Here is what they said: Laying shingles over wet felt may result in bubbling of the roof felt, causing the shingles to not lay flat, discoloration of the shingles and/or the formation of mold. Mold can be a real problem with the high humidity we have here. Also, according to the Asphalt Roofing Manufacturers Association: this practice may cause "...mold and erosion of roof", and "The roofer is on the hook for improper installation."

After the thunderstorm, I was surprised to see that the 30# felt was saturated with water, and showed no indication of drying out quickly. Three more questions please: What happens to the water trapped beneath the shingles? How long will it take for any of the above problems to occur? What is roof erosion? Thanks again, Jon

dougger222

Wed Jul 27, 2005 5:15 pm

Wow, now I'm the roof god, thank you PRIDE!!! I'm so honored I don't know what to say, this is the greatest day in my roofing career. All I wanted to do was roof homes with quality craftsmanship.

Again PRIDE, you missed the point. A poster posting true life experiences with HIS experiences and not what the books or shingle manufactures tell you. Again take my posts as 100% opinion and not as fact. Not trying to say anything I do as a roofer is right just saying what has and what works for me as a shingle installer day in and day out.

Again PRIDE, thank you, your so humble...

Master

Thu Jul 28, 2005 12:18 am

I let it dry out before shingling over it.