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Does adding R30 UNFACED Fiberglass Batt to basement cause any issues?

Does adding R30 UNFACED Fiberglass Batt to basement cause any issues?


  #1  
Old 03-18-21, 10:39 AM
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Does adding R30 UNFACED Fiberglass Batt to basement cause any issues?

For sound proofing reasons, I (or an insulation company) may add R30 UNFACED Fiberglass Batt to the ceiling of my soon to be (re)finished basement.

https://www.google.com/search?q=r30+...und+insulation

Is there a chance this might cause any issues/change any existing circumstances with humidity, air circulation, etc...? Right now there's a modest level of humidity and we have a santa fe dehumidifier which keeps it well controlled, but I'm wondering if adding the insulation might do anything negative (i.e. does it limit air circulation from basement to house, thereby increasing humidity in the basement?).

Thanks for your thoughts.

Thank you.
 

Last edited by newbie0101; 03-18-21 at 10:48 AM. Reason: fixed typos
  #2  
Old 03-18-21, 11:23 AM
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Your installing insulation inside a conditioned space (the house).

If the basement was not insulated it might slow the heat transfer between the house and basement.

If the basement is insulated (and conditioned) like the main living area it wont do anything.

All you doing is trying to isolate noise!

Fiberglass is not the best for sound, try looking at soft touch insulation, much denser!
 
  #3  
Old 03-18-21, 12:15 PM
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Thanks so much and I'll look into soft touch as well.
 
  #4  
Old 03-18-21, 06:06 PM
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imo, some basements have a higher moisture content and I would hesitate to install fiberglass in a basement area.
 
  #5  
Old 03-18-21, 07:04 PM
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Unfaced fiberglass is quite vapor permeable, so that aspect would not be a problem. Unfaced fiberglass also does not support mold growth on its own because it is not a food source, and mold needs 3 things to grow... one of them being food. But if it becomes dirty or contaminated with biomatter, it is really that biomatter that is getting moldy, not the fiberglass. And that is more likely to happen on walls... (such as from damp walls or from flooding) not on a ceiling.
 
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