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Insulating an interior bathroom

Blaze626's Avatar

Join Date: May 2017
Posts: 41

06-20-17, 12:56 PM   #1  
Insulating an interior bathroom

Hello all,
I'm considering unfaced fiberglass rolled insulation in interior bathroom walls just to cut down noise in adjacent rooms.

Any drawbacks to doing this? I know the reduction in sound isn't going to be anything great like using this [ATTACH=CONFIG]82206[/ATTACH] but it seems like a cheap attempt is worth a shot.

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stickshift's Avatar
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Join Date: Oct 2004
Posts: 18,476

06-20-17, 02:03 PM   #2  
Fiberglass offers very little sound reduction. Look into Roxul Safe n Sound.

Marq1's Avatar

Join Date: Sep 2016
Posts: 1,926

06-21-17, 01:32 AM   #3  
3 1/2 fiberglass insulation will do nothing, if you have a 6" wall there will be some benefit.

Couple years ago when I finished the basement I installed 3 1/2" and 6" of the recycled cotton insulation and it worked great for sound.

Bud9051's Avatar

Join Date: Oct 2008
Posts: 9,772

06-21-17, 03:50 AM   #4  
Sealing penetrations and gaps like electrical boxes and drywall to framing will help with sound transmission. Ditto on the suggested Roxul.


Blaze626's Avatar

Join Date: May 2017
Posts: 41

06-21-17, 07:32 AM   #5  
Great advice, I'll use the Roxul product in the walls and try a sound deadening caulk around boxes and between drywall/durock and studs.

Thanks everyone.

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