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About 20 years ago, I priced out a Follansbee Terne* coated stainless steel standing seam roof versus asphalt shingle. The metal roofing was 30% of the weight, had a much longer warranty (50 years) and was about 10% more expensive than the shingle. The company would even rent the seamer to do the standing seam. For an owner-builder, it was a no-brainer - go metal.
Unfortunately, Follansbee went out of business recently.
*Terne roofing - a lead-tin plated steel panel, corrosion resistant, and very durable. Jefferson's Monticello had a terne roof (200+ years old). Recent changes in government regs have discouraged the use of lead in building products, so Follansbee had to change their recipe - which may have contributed to their unfortunate demise after 110 years in the business.
Yes, especially standing seam but worth every penny. Lower utility costs, lighter, and for people like myself in a hurricane area, they are better in storms.
flat roof is not good for steel roof as last I remember it requires one in twelve pitch even on a patio. Better something like a Bry or other sealed membrane. Bry is a rolled type which the seams are torched to seal together and then trim around the edge. Basically you end up with a one piece roof with trim around edges. Best I have seen on a flat or low pitch roof.
Metal roofing is a premium home product, you can expect your new roof to cost roughly two to three times what an asphalt shingle roof costs. However, a metal roof is comparable in price to tile roofing or cedar shake roofing. If you currently have a slate roof, you can expect your metal roof to cost less.
flat roof is not good for steel roof as last I remember it requires one in twelve pitch even on a patio. Better something like a Bry or other sealed membrane. Bry is a rolled type which the seams are torched to seal together and then trim around the edge. Basically you end up with a one piece roof with trim around edges. Best I have seen on a flat or low pitch roof.
I had a "rubber roof" installed on my nearly flat back porch probably 5 or 6 years ago, and it solved all the problems with leaks from ice dams I'd been having. I think it might actually be a sealed membrane under a name popular with locals because the installers did seal it.
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