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The house has some areas in the roof that are somewhat flat. (This is not new construction). Two contractors state the roof is too flat to install metal roofing. One other contractor says it can be done with metal, with no problems. I do not know what to do.
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Asphalt/fiberglass shingles require a 3:12 pitch.
Most residential metal roofs require a 3:12 pitch.
There are metal roofs which can be used as low as 1/4:12 pitch though.
Never use any roofing material at a pitch that is lower than the manufacturer specifies.
Determine your roof pitch and then inquire with metal roofing manufacturers for a roofing product that is appropriate for that pitch.
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My roof is low pitched as well (2:12...as low as 1.75:12 in some places)...can you give some examples of metal roofing products that would be applicable?
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To the best of my knowledge, there are three basic designs of products which would work for you:
1) A field-seamed standing seam. This is what is usually used on large industrial buildings -- "Butler buildings" -- that type of construction. The pans are placed on the roof and fastened down with hidden clips. Then, a "seamer" or fastening machine is run down the length of the seams to "clinch" them tight.
2) Some of the metal roof panels which are available in sheets can be used on lower pitches. Many producers of agricultural roofing (McElory Metals, a member of MRA, is a good example) provide certain profiles such as what is known as an "R" Panel which can have a tape sealant installed between the panels to keep water out. These types of products have exposed "through" fasteners.
3) Some standing seam roof systems have sealant pre-applied in the female portion of the raised seams. Some of those systems can be used on lower pitches. Manufacturers would include the following MRA members: ATAS (Accel); McElroy; Englert; and Petersen Aluminum.
I hope this helps.
11/7/2003
Or copy this URL: https://www.metalroofing.com/spirit/comment/2386/find/Isaiah Industries, Inc.
11/7/2003
Or copy this URL: https://www.metalroofing.com/spirit/comment/2387/find/12/4/2003
Or copy this URL: https://www.metalroofing.com/spirit/comment/2388/find/Isaiah Industries, Inc.
12/6/2003
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