Not necessarily. My roof is steel and it is standing seam, meaning the
strips from front to back are one piece and each is folded and then
folded again into each other. They are mechanically crimped very very
tightly. The entire roof is tightly bonded together.
Mike, k5wmg
Pipe Creek, Texas
Fast cars, slow boats, big dogs, old trucks, little radios, and
summers off to write
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