roofing nails are raising up on shingle roof

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  #1  
Old 06-14-12, 09:15 PM
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roofing nails are raising up on shingle roof

How should I make repairs when the shingle roofing nails are coming up on a 1x8 plank decking ?
 
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Old 06-15-12, 07:15 AM
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Do you have attic access? If you do I would suggest pulling them down with pliers and giving them a slight bend.
 
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Old 06-15-12, 08:04 AM
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Wayne's suggestion sounds like what I would do.
The only question I have is why/how are they popping up?
 
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Old 06-20-12, 04:17 PM
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I'm guessing this might be a re-roof?
 
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Old 09-27-13, 11:08 AM
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what does cause this to happen? It was suggested that I have a lack of adequate ventilation in the attic. Could this be it?
 
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Old 09-27-13, 11:24 AM
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I've always attributed it to varying conditions like humidity and temperature that cause the boards to repeatedly swell and shrink. Every time the boards expand they pull the nail out a tiny bit. Then they shrink leaving the nail sticking up a bit. Every cycle it goes through pushes the nail up a bit further.
 
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