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I was wondering if anyone had ever used or recomended some type of adhesive to attach panels with in conjuction with screws. I was thinking of some type of construction adhesive to limit the number of fastners in a "R" type panel. I was thinking that the less the number of punctures the less chances of leaks in the future.
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The screws are also for wind uplift. I have done repairs on metal roofs that did not have enough screws and the wind has torn panels off, leaving the screws in the deck.
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Various adjesives have been experimented with over the years. However, the expansion and contraction rates of different materials in the roof assembly becomes a problem. Additionally, when the roof has to be removed, that could be an issue.
Also, many adhesives are foams and those will age some over the years and could be a problem. Foams can also interfere with flashings that may have redundant water channels to carry rain water under the roof panels.
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I was considering some of the polyurethane sealants/construction adhesives, they seem to be very tough if applied correctly. I would want to use it in the inner field of the panel and make sure the edges are well attached with screws.
8/28/2008
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Or copy this URL: https://www.metalroofing.com/spirit/comment/11954/find/Isaiah Industries, Inc.
8/30/2008
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Or copy this URL: https://www.metalroofing.com/spirit/comment/11956/find/Isaiah Industries, Inc.
9/5/2008
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