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Old 07-17-2019, 02:44 PM   #1
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Roof boards

I have a roof that has some of the boards underneath the rubber roof have popped up on me. They arent sticking out of the roof but you can tell a staple or nail has gave way. Can I just re screw them down and put dicor over the screw holes or is this something I need to ripp up the old rubber roof and replace them? The roof is 20 years old so proably time for a new one. but i am looking to buy some time for now.
Anybody have this problem before?

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Old 07-17-2019, 10:15 PM   #2
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Well, you've got to open it to secure it down. If I we're choosing between dicor or eternabond, I think I'd go with eternabond tape for it's strength. This may happen more, better to have a bunch of eternabond than a hodgepodge of dabs of dicor.

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Old 07-18-2019, 05:28 AM   #3
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Pictures? Without seeing the severity I think I would just put 6" Eternabond over the areas you are afraid may rub through and leave it be until it does. No reason to make any extra holes until necessary.
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Old 07-18-2019, 09:27 AM   #4
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Those boards are sheets of plywood, right? You can add screws to pull them back down IF you can identify where the cross-members are to drive screws into.

The ideal method is to lift off the covering membrane and put new screws underneath, but you could run them right through the roof membrane and just seal up the hole afterwards.

The gotcha, though, is why the plywood is coming loose to begin with. Chances are it is caused by rotted wood separating from the original screws, in which case adding more screws won't help, or at least not for long. You would need to (1) stop the water leaks and (2) replace the rotted plywood.
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Old 07-19-2019, 11:55 AM   #5
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Yes its plywood. I dont think its a water rot issue. It doesnt feel like rot. I have been in the dry desert for 3 years I think its more of a heat dried out the glue and the staples just popped up cause i can feel them. Its a 98 and back then they glued the boards down and stapled them. I was curious if anybody else has had that problem and what they did about it. If its even a problem if they arent sticking through the roof.
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Old 07-20-2019, 08:49 PM   #6
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Gary offers great advice. The only thing I can comment on is, you might test for moisture under the membrane IF you have someplace you can remove/lift enough membrane(easiest around roof vents) to see wood. If you can, buy/borrow/rent a woodworkers moisture content meter, and follow directions for use. You may even be able to push the test pins through the membrane in the spot affected, then seal the holes with Dicor or Eternabond as you choose.

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