April 18, 2013 | 1 comment | 1423 views
Helping the hot air escape
Q. I have to re-roof, and I’m being told to put a vent in the top of my roof instead of an attic vent fan that sticks up. They described it like a slit under the top shingles that is more hidden than the fan cover sticking up above the roof. What do you think of their idea? Is it just as good or better?
The problem with this method is that it doesn’t allow for enough air movement. Your roof and attic get choked with heat buildup, the shingles heat up like strips of bacon on a frying pan and little by little they become brittle in the middle. Sounds like a song, but you won’t be singing when you see the pieces of shingles come rolling off your roof. If you have any doubt about what I’m saying, you only have to see my backyard after any windstorm and to count the flakes of roofing coming off while I try to settle with my insurance company from the “superstorm.”
The insurance company will probably give you a hard time about how your shingles weren’t installed correctly, without telling you why they think that. The installation of the shingles has to follow manufacturer’s requirements, which include proper venting of your roof. Whoever told you that the little strip of venting at the top of your roof would somehow be enough hasn’t yet learned the hard way what heat buildup can do.