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TOPIC: General Discussion

Trapizoidal Roof

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I am planning to build a 1300 sq ft addtion to our home that links the house to my garage and woodworking shop. Roof on the front is a trapizoid with a ridge beam of 38' and a base of 62' and is curved on a 52' radius. The pitch is 1.5 in 12. The pitch on the back side is 2.4 in 12. I am contemplating using a standing seam metal roof, either manufactured or site preped. Can you advise as to be best method for roofing this structure? Is there a better method than standing seam? I don't want to use rolled roofing unless it's the absolutely last resort. PS: The winds here in the mountains can get pretty strong, upwards of 35-40 mph. But usually in the 10-15 mph range.
Guest User

6/10/2006
The radius concerns me though I am not sure I understand exactly what you have. "Round" roofs require tapered panels which must be ustom formed. "Arched" roofs require curved panels which also muct be custom formed. For that low of pitch, you need a field-seamed metal standing seam roof. I would suggest contacting a metal roofing specialist or a larger commercial roofing contrator in your area in order to get their input. Todd Miller
Todd Miller
Isaiah Industries, Inc.

6/14/2006
Todd, Thanks for your reply on this. I did some more thinking, perhaps I should have before I wrote the original message. Anyway, the roof has a rounded (52'radius) edge, but is flat overall to the 38' ridge beam. So, it seems that the simple answer to my question is that the standing seam roofing will need to start in the middle and work toward the sides where the roof joins the house and garage. Those panels can then be cut to the proper angle to coincide with the angle of the valley at each of the buildings. I am thinking now that this method will allow me to use manufactured SS roofing. The flashing may well be a challenge, but not insurmountable. Any further thoughts will be appreciated. Thank you once again. John
Guest User

6/14/2006
That sounds correct. Todd Miller
Todd Miller
Isaiah Industries, Inc.

6/15/2006