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devils98

10:24AM | 08/26/03
Member Since: 08/25/03
4 lifetime posts
Bvroofing
I have a T&G roof, on a 2:12 gable roof.
We have had 4-5 roofers come by and check out if it needs to be repaired or replaced. It can last a year or two longer, but we are thinking of putting a new roof on. Here is the problem. Some say you can't put a metal roof on, others say you can. Some say you can put composite shingles on, some say no.
We are looking at a galvalume metal roof that is screwed down. What is the best roof to put on a roof like this? Is metal ok or are we asking for trouble.
Thanks in advance

pgriz

04:40AM | 08/27/03
Member Since: 01/21/03
66 lifetime posts
You should only consider materials that are specifically manufactured for low-slope roofing. There are metal profiles that meet this criteria, but be sure the manufacturer certified it as low-slope roofing. There are also "low-slope" composition shingles, but our experience with them has been poor. So, your choices are a) Tar-and-gravel, b) EPDM or similar membrane, or c) low-slope metal roofing. As always, when you are considering which roofer to use, ask for references of installations done 3-5 years ago (if they are still good references after 3-5 years, then the work is probably good), check them thoroughly, and ask to see jobs done that are similar to what you will be having done.

devils98

09:09AM | 08/27/03
Member Since: 08/25/03
4 lifetime posts
Thanks a lot. You are the first person to actually give me real choices.

Thanks again.

devils98

10:50AM | 08/27/03
Member Since: 08/25/03
4 lifetime posts
Another quick question, what is considered a low-slope metal roofing? Can 29 gauge or 26 gauge screw down panel roof be used in a low slope roof?

pgriz

12:52PM | 08/27/03
Member Since: 01/21/03
66 lifetime posts
It is not clear to me if any of the panels you mention are specifically designed for low-slope application. If there's nothing from the manufacturer saying that it IS designed for low slope (ie, below 3:12 slope) then it is most probably steep-slope roofing and not appropriate for your application.

The low-slope panels we've seen all have hidden fasteners or hidden clips, and designed to prevent water from getting past the joints to where the fasteners attach the panels to the roof. If the panels are screwed through the surface that is exposed to the weather, then they are steep-roof material.

In a low-slope application, you have to expect that there will be an accumulation of snow on the surface, which can then be saturated by water. This then creates hydrostatic pressure which allows the water to push into any open holes or joints. Low-slope materials are designed to prevent such water from entering the area where the panels are fastened.

Hope that makes things clear.

devils98

03:29AM | 08/28/03
Member Since: 08/25/03
4 lifetime posts
I think that clears it up. I really dont have to worry about snow, being in Central Texas and all. So I think that is a big help.
Thanks
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