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Page 4 goes into little detail. In the areas I've worked in that's the norm, not saying it's correct but warranty on a metal roof involve proper screw placement. We use to use lead capped nails and then the industry went to rubber washer nails and now these screws. I've not seen a problem with rotting rubber washers. If that's the case there would be huge problems with rubber membrane roofs, which I haven't seen. Can't ay that the rubber formulation hasn't changed.
http://files.buildsite.com/dbderived...rived44736.pdf
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Might be the climate, too. It's summer year round at YCC's house.
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I was thinking that too, deep humid south LOL I wonder if it could possibly been a bad run of rubber. I've been to atlanta and noticed rubber membrane roofs, that's about as far south I've been except fot east texas.
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They use the rubber washered screws here also. I have a couple buildings that have been up for several years now and don't appear to be leaking because of washer failures.Btw a couple sheds I've taken down for the tin had just plain old nails holding the tin on them. Must be an east Texas thing .Huh?
Oldtrap
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'Btw a couple sheds I've taken down for the tin had just plain old nails holding the tin on them."
east texas don't have the market cornered on thin wallets LOL
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