Condensation worries?


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Old 08-13-22, 07:13 PM
C
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Condensation worries?

Looking for advice on adding rock wool as shown in the photo. I am in south Louisiana, so mostly hot and humid. This is a metal building house with 3 closed cell spray foam on ceiling. I had some R-13 mineral wool insulation left over and would like to put it on this second floor loft ceiling to help with noise/heat.
would the small airspace between the closed cell and mineral wool cause any problems with condensation or other issues? Thanks for any help.



 
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Old 08-13-22, 08:04 PM
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Shouldn't. Closed cell foam against the roof is best practice. As long as you don't have any air leaks introducing warm humid exterior air into that space you should be okay. Laying it horizontally behind the framing like you have it is fine.
 
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Old 08-14-22, 04:35 AM
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Thanks. We will also monitor inside humidity levels with our hvac.
 
 

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