
Drywall over 1-1.5" rigid foam? - DIY Home Improvement Forum
Jan 4, 2009 · Foam board and plastic vapor barriers are not the same. The foam will insulate (stop the heat) from reaching the sheathing better than cavity insulation alone, letting any …
House wrap over insulating foam board or under??
Jul 31, 2008 · The Vinyl contractor that I am going to use is going to put up 3/8” foam board (Insulfoam type) before installing the vinyl siding. My house is down to the OSB right now, and …
fact or myth: leave an air gap between insulation and...
Feb 23, 2012 · A lot of people have been telling me that when installing insulation it is necessary to leave a bit of an air gap between your outer wall and your insulation in order to allow for air …
Seal Basement Walls Before Insulation? - DIY Home Improvement …
Oct 15, 2023 · Almost all of the foundation is below ground level and I would like to make sure I do my best to seal out any possible moisture issues before I install the insulation. My plan is to …
Foam board insulation instead of fiberglass batts for stud bays?
Oct 11, 2019 · Since foam board is not air permeable, along with the spray foam, the entire stud bay would be air sealed. Plus 2" foam board in a 3-1/2" depth stud bay leaves 1-1/2" of air …
Insulating Walk Out Basement - DIY Home Improvement Forum
Jan 15, 2025 · Between open-cell foam, closed-cell foam, and Rockwool batts, what would you recommend? Keep in mind there’s electrical wiring, flexduct and CPVC pipe running through …
1" Hard Foam directly under Dry Wall, possible issues?
Jan 1, 2024 · We are currently renovating our 2nd story bathroom, and wanted to put 1" thick foam board insulation on two of the walls (exterior walls) to help with temperature regulation …
concrete block wall insulation: attach furring + foam board to …
Dec 9, 2022 · Above grade concrete block walls, 8x8x16. All block cells either grouted or foam filled. The historical method was to nail PT furring to the block face with cut nails, with kraft …
Foam board over Radiant Barrier - DIY Home Improvement Forum
May 10, 2024 · So to my question can I put foam board insulation over the Radiant Barrier? It puts off alot of heat and I understand it has nowhere to go if the air isn't moving. Could I then add …
Rigid Foam Insulation over existing wood siding
Mar 5, 2010 · I am thinking to add insulations to the walls and retrofit the windows at the same time. I am thinking to use either 1" or 1.5" rigid foam insulation board over existing wood …