Kubstix
Member
Demoing garage right now and debating on some things. 2 stall attached garage with 2 bedrooms above. Down to studs right now and going to insulate. Walls and ceiling had R-11 and drop ceiling (failed code not fireproof) The only thing I made a decision on was #1. Not sure what to do with 2 and 3. All insulation will be covered with 5/8 Purple Board Fire/Mold/Mildew resistant since we sometimes wash the cars in the garage, or pull in with snow, rain, ect. Help Please, Northeastern Pennsylvania.
1. R-21 Faced on 2x6 walls one exterior and one interior. Exterior wall will have paper outside, interior wall will put paper inside (heated room behind).
2. R-15 Roxul or R15 Faced Fiberglass for 2x4 interior walls from garage. Going with Roxul won't have a vapor barrier, fiberglass will? Can't make a decision here.
3. Ceiling. Either R-30 Faced Fiberglass with sound barrier, or Roxul R-30 without a vapor barrier? I bought 4 rubber insulators for the garage motors bolt up, replacing metal rollers with nylon. Going for sound proof so kids won't hear the doors opening and closing. Is the performance of the Roxul worth it for this?
Spray foam is out, we live in a rural area they would come out and quote me 4-5k. I have lots of water piping in here (PEX-A) as well as my water heater. Garage doors are insulated doors.
1. R-21 Faced on 2x6 walls one exterior and one interior. Exterior wall will have paper outside, interior wall will put paper inside (heated room behind).
2. R-15 Roxul or R15 Faced Fiberglass for 2x4 interior walls from garage. Going with Roxul won't have a vapor barrier, fiberglass will? Can't make a decision here.
3. Ceiling. Either R-30 Faced Fiberglass with sound barrier, or Roxul R-30 without a vapor barrier? I bought 4 rubber insulators for the garage motors bolt up, replacing metal rollers with nylon. Going for sound proof so kids won't hear the doors opening and closing. Is the performance of the Roxul worth it for this?
Spray foam is out, we live in a rural area they would come out and quote me 4-5k. I have lots of water piping in here (PEX-A) as well as my water heater. Garage doors are insulated doors.