Vapor barrier / Discussions

...barrier location if perfect. I would point out that some air barrier materials allow moisture to pass, and some stop it. to install an air barrier on the outside of the insulation you need to be sure not to trap moisture, so be sure you have a vapor permeable membrane, read more here - Choosing the Right House Wrap / W...

...vapor barrier between the concrete walls and the 2x4 studs. The space behind the rim joist is insulated with 1" rigid foam (the pink stuff) and then covered by a very thin layer of spray foam. I plan to keep the current vapor barrier and wood studs for financial reasons, put mineral wool between the studs, then cover i...

...barrier is properly installed and not modified. I got a bit of leakage in the spring through my master bathroom ceiling.  I have a 6/12 pitch roof with gables at front and back. The buiding code where I live was changed a few years back and does not allow vented soffits within 4 ft of the property line, so my soffits a...

...barrier, should a vapor barrier (non permeable) be used to hault moisture flow between the attic and living space. Thinking permeable is better but I'm hearing differently. Where and when to use vapor barriers in construction and renovation can vary depending on a few things – the climate you are building in, whether i...

...vapor barrier in very cold climates, an exterior vapor barrier in hot and humid climates, and possibly vapor retarders in that grey area between the two.  I don't know your exact location so I would check with the local building authorities, but for cold climates you would want an interior vapor barrier. Taking care to...

...vapor barrier without tearing out the whole wall? I've read enough of the basement articles to know that on a new wall I should put a vapor barrier right against the foundation, then the wall assembly. Ideally with a perimeter drain as well. But this isn't new and that's not gonna happen for a while. Thanks! Putting va...

...vapor barrier also be the air barrier? There is a difference between the two, read more here first –  The difference between air barriers and vapor barriers If you plan to have an additional air barrier, for example a house wrap or Tyvek at the bottom (which would be my preference, then the options open up for how to ...

...vapor barrier on the house side (not pointed downward toward the basement). I want to had additional insulation, especially over the unheated garage. Is wool insulation over the existing fiberglass recommended, or should I simply add unfaced fiberglass insulation? Thanks, DB

...vapor barrier behind our drywall but doubt it - this is an older wood framed bungalow. In addition, i dont expect our interior drywall forms a very great air barrier either - we have the usual holes from outlets etc but we have a lot of windows and other installations - all done seemingly DIY so I have no idea if they ...

...vapor barriers was originally to prevent moisture accumulation and damage in walls, which it does above grade, but below grade a vapor barrier CAUSES moisture accumulation and rot. It’s a bit late now I guess, but what you should probably do if you can is see about cutting holes in the vapor barrier to let the moisture...

...vapor barrier that satisfies building inspectors (as it looks the same as any poly vapour barrier) but it will also let moisture escape. It’s called certainteed Membrain, and when too much humidity builds up, it actually has pores that open and let some moisture escape. But keep in mind, interior vapour barriers are on...

...barrier.  Then stud out the inside and R13 insulation then dry wall. Thoughts? What is your climate zone? Experiencing tornadoes is a clue, but closer is better. A foil bubble wrap will for sure act as a vapor barrier, but that should only be installed in a cold climate, so I’m assuming you’re a bit to the north. Foil ...

...vapor barrier using 6 Mil plastic and hold the new walls a few inches off of the block. I am worried about the moisture that makes it past the Drylok and it stoped by the vapor barrier. I have no french drain or any drain sytem. I believe Im right when saying that that space between the block and barrier has to breath ...

...barrier on the ground, but the rest is a little suspect to me as it is to you. First though I would point you to this page in case you haven’t seen it yet, it discusses the issues with crawl spaces and how they are best insulated and kept dry. Crawl Space Insulation Tips for Insulating Crawlspaces Properly So a few que...

...vapor retarder primer (vapor barrier paint) in our Edelweiss LEED Platinum Demo House instead of a 6 mil poly vapor barrier, it was for the walls not the floor. As for thickness, that is what we would call a bit of a concern with using it as a vapor barrier, it is harder to be sure there is consistency of coverage. Our...

I have a cinderblock foundation in my house built in central east Ontario in 1983. In 1999 I finished the basement, with tar paper against the cement wall, then studs and four inches of batt insulation and then a vapour barrier and drywall. Two years ago I noticed cracking on the exterior of some of the foundation bloc...

...vapor barriers and insulation.  I live in update NY, our home was constructed in 1952.  We are adding a full shed dormer with 2x6 walls and 2x12 rafters.  Our plan is to use closed cell in the walls and ceiling - which will have a copper standing seam roof.  Code requires a Tyvek type outer wrap, but we want to conside...

I'm adding insulation to the stud walls in my baserment with 2.25" of close cell spray foam on the concrete walls.  The stud walls are 3-5" " from the close cell spray foam.  I can either (try to) pack the void between the wall and the uneven surface of the closed cell spray foam, leaving the stud bays empty, or leave ...