Faced or unfaced insulation
#1
03-31-23, 11:58 AM
Faced or unfaced insulation
I have a finished basement. One room has to be done over because of a water leak. I wasn't here when they tore out the wall and insulation. For the basement wall do I use faced or unfaced insulation? There is foam on the wall itself right now so I'm asking about between the studs. Also, there is faced insulation in the ceiling. I read conflicting articles on this. Faced or unfaced on walls and ceiling? I live in Colorado which has low humidity.
#2
03-31-23, 01:27 PM
Group Moderator
For interior walls you don't need to use faced insulation.
I've always used at least Kraft paper backed insulation as it makes the installation cleaner and neater.
I hate insulating.
With outside wall you need to consider a vapor barrier.
I've always used at least Kraft paper backed insulation as it makes the installation cleaner and neater.
I hate insulating.
With outside wall you need to consider a vapor barrier.
mickeyrory
voted this post useful.
#3
03-31-23, 04:39 PM
Group Moderator
Current opinion is that you do not use a vapor barrier on fiberglass insulation in exterior walls when those walls are below grade.
See IRC R702.7(2)
See IRC R702.7(2)
Last edited by XSleeper; 03-31-23 at 04:49 PM.
#4
04-01-23, 09:04 PM
Group Moderator
I'm with X on no vapor barrier below ground. Since the paper is a vapor retarder, I would skip it.
#6
04-02-23, 06:00 AM
Group Moderator
Properly sized unfaced fiberglass will stay in place between the studs. I find unfaced easier to install, if a vapor barrier is needed/required, then use plastic sheeting.
