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Repair Garage Insulation

 
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Old 09-06-2018, 01:46 PM   #1
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Repair Garage Insulation


Hi All,

I have never had to repair spray foam insulation and I would appreciate your help with the following:

A customer of mine had a water leak in a bathroom above their attached garage. They had the leak fixed and asked me to repair the damage on the garage ceiling (3-4" wide, 3' long).

When I opened the drywall, I saw that there is spray foam insulation on the ceiling. The damage (discoloration, the insulation is intact) on the insulation is small (3" by 2"), and I would like to ask you what would be the best option to repair it. [Edit] Since this is above a garage, I also want to repair it properly, so exhaust gases would not leak into the house.

Thank you!

Last edited by KosmoB; 09-06-2018 at 01:49 PM. Reason: Additional information
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Old 09-06-2018, 02:03 PM   #2
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Re: Repair Garage Insulation


I would leave it open for a week or so, let it dry out, then close it up. Hit it with kilz oil, if you wish.

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Old 09-06-2018, 04:03 PM   #3
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Re: Repair Garage Insulation


Thank you Mark!

Just to make sure I understand you correctly:
I shouldn't touch it at all and after it dries well, spray it with Kilz oil to seal it and then just close the drywall, right?

Would this be enough to prevent the exhaust gases from entering the house? Will spray can foam provide better seal or not? If yes, what should I use? (Sorry, never worked with foams!)
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Old 09-06-2018, 04:53 PM   #4
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Re: Repair Garage Insulation


The drywall is pretty much the barrier to living space above. Install the drywall, mud it, finish it and paint it. Done.

Andy.
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Old 09-06-2018, 11:03 PM   #5
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Re: Repair Garage Insulation


5/8


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Old 09-07-2018, 08:10 AM   #6
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Re: Repair Garage Insulation


Thank you ScipioAfricanus and Mordekyle!

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