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I will have a standing seam roof installed within a month and would like to know if there is any substantial difference between a mechanical seamed one (with a special crimper) and the ones with a butyl caulking that are not mechanically fastened?
I wonder if the caulking will not dry out and fail in 15 or 20 years? Is this inconsequential?
8/25/2005
Isaiah Industries, Inc.
8/25/2005