Framing over existing blanket insulation in the basement, yes or no?
11/24/2023 at 1:36:09 AM
I am thinking of getting basement walls framed. The builder already installed R20 fiberglass insulation wrapped around with plastic roll. Please see the pictures attached. There is a black paper installed between concrete wall foundation and the insulation batt.
My question is: Can I frame over existing builder's insulation?
The house is 4 years old and I didn't notice any moisture or mold signs in the basement.
Thanks for the advice.
11/24/2023 at 3:03:47 AM
Frost walls must be min. 1/2" from concrete. You can put them anywhere beyond that you want but that is typical install so as too hold insulation in wall. Fiber insulation should never be glued onto concrete, as long as you have a gap, should be fine. Plastic vapor barrier goes on warm side of room typically on the frost wall studs then drywall.
11/24/2023 at 2:08:15 AM
Not sure why pictures did not get attached to this post. Attaching them here again.
11/24/2023 at 2:14:24 AM
Trying again
11/25/2023 at 6:41:42 AM
Yes you can just make sure you drywall the wall first and cover the insulation up and then frame into the wall makes a much cleaner job amd will get your best result
11/28/2023 at 1:11:09 AM
Blanket insulation is a cheapo way some builders do and it is garbage. The right way to do it is to be frost wall/insul/poly. Batt insulation that is attached to concrete direct will cause you moisture issues/mold etc. down the road. Redo it
Search the TrustedPros directory and discover the best contractors in your area.
Find your home service pro
