Condensation behind Insulation - DIY Home Improvement Forum
Dec 5, 2022 · The foam board is completely sealed at the top & bottom/sides with beads of canned sprayfoam. The top of the wall and rim joists were also recently completely sprayfoamed after …
concrete block wall insulation: attach furring + foam board to concrete ...
Dec 9, 2022 · Foam board will be 3/4" thick foil faced R-5 polyisocyanurate. Depending on what's in the wall, furring will be either 1x2 or 2x4 laid flat. In addition, a couple of areas will have a fully framed …
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 moisture condense …
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 I need to know if …
Crawl space encapsulation -- vapor barrier under or over insulation ...
Apr 24, 2023 · I have a good 12-mil vapor barrier ready to put down, and XPS foam board for the foundation walls. Is it best practice to install the wall insulation first, then vapor barrier over it (leaving …
Installing foam board insulation on ceiling, any...
Dec 23, 2023 · Installing foam board insulation on ceiling, any suggestions on how to do it. Jump to Latest 9.6K views 4 replies 4 participants last post by rpsbuehler Dec 23, 2023 rpsbuehler …
What is the proper way to use a rigid foam board on...
Jun 18, 2023 · I stripped away the old framing and fiberglass insulation. My current idea is to: Rigid XPS foam board around the concrete block wall, foam spray any gaps, attach new framing on the front of …
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 flow.
Foam board insulation. Will it lead to trapped moisture...
Jan 17, 2026 · I'm working on the insulation plan for the "east" living room in our pre-1890 home. The ceiling and interior walls are presently exposed. I updated the wiring, running two new, 20-amp …
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 some kind …