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Old 07-23-2015, 06:55 AM   #1
Campy
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AC install, what about the holes in the roof?

Got my Penguin AC unit today and getting ready for the install, what do I need to do about the holes in the roof from the vent screws? Will the AC gasket seal them or should I add sealant and let it dry before setting the unit down? It took some work but I managed to get every bit of old sealant from the vent off the roof membrane where the AC will go.
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Old 07-23-2015, 10:15 AM   #2
EricLynnAllison
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My AC install covered the entire vent area. No need to do anything.
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Old 07-23-2015, 11:04 AM   #3
Festus2
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To be on safe side, I would fill the holes with Dicor sealant (not the self-leveling type) even though the gasket will cover them. If there is a hole somewhere, you can be sure water will find it!
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Old 07-23-2015, 11:25 AM   #4
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If I was worried about them, and didn't plan on ever removing the A/C unit I might use eternabond tape.
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Old 07-23-2015, 12:10 PM   #5
Larry1013
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I would use eternabond. I just replaced my ac and there was one corner that looked like it might leak from a small tear. i cut a small piece of eternabond and placed in in the corner. the seal sits on top of this tear.

I tightened the unit to the sealing and let it sit over night and then snugged it down again the next day.
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