Vapor / Discussions

How do I get rid of moisture with cement floor crawl space that has a vapour barrier?

I recently replaced the vapour barrier because of dry rot. Luckily no cracks in the foundation and floor joists are fine but I noticed that barrier is extremel...

Posted by Cindy Chatham 04 chatham Aug. 25, 2020, 4:47 p.m. Crawl spaces 1 Responses

What is your advice on exterior wall insulation for a tiny home?

...vapor barrier, I see no mention of insulation for you Tiny House, but there is a comma after vapor barrier so I’m wondering if you accidentally posted b...

Posted by Mitch Fowler Aug. 27, 2020, 7:04 p.m. Tiny house 1 Responses

Can Rockwool be installed over Type II EPS?

...vapor barrier, 2x6 wall with fiberglass insulation, 5/8 plywood, 2 1/2 " Type II EPS. Tyvek, siding. I intend to remove the EPS and install a self-adhering WRB ...

Posted by Brian Bonnell March 30, 2020, 11:04 a.m. Wall assemblies - renovation 1 Responses

How do you fix radon and water infiltration in a dry stone foundation?

...vapor barrier on ground/walls, taping best able around mechanicals and piers - and adherred to the skim of mortar under the rim. Questions: 1) do you think an...

Posted by john flannery July 14, 2020, 4:24 p.m. Foundation and basement improvements 5 Responses

How do you best use polyiso insulation in a basement?

...vapor barrier & ½” gypsum drywall, sealed with drywall sealer and painted with vapor barrier paint. What problems do you see with this detail? Thank you Polyi...

Posted by Iain Matheson Jan. 24, 2020, 7:45 p.m. Basements improvements 1 Responses

How you vent a metal roof?

...vapor barrier. What is recommended at this stage of the install of the roofing assemby? Air or Vapor barrier? install two layers of 1 -1/2 inch EPS expand...

Posted by Kim jarrett July 12, 2019, 12:15 p.m. Roof coverings 3 Responses

Is it ok to add insulation between joists in a crawl space?

...vapor barrior, but my indoor floors felt cold this last winter, making my whole living space cold. Would it be ok to add insulation between the floor joists? Ov...

Posted by Cheryl Bottomley May 11, 2020, 3:17 p.m. Crawl spaces 0 Responses

My window drips when I run my air conditioning. What is the fix?

...vapor barrier? Before coming up with a solution you really need to be sure of the problem. Poly vapor barriers can cause exactly such a problem in a house wit...

Posted by Sean Sullivan Aug. 27, 2020, 10:36 a.m. Heat pumps, geothermal and AC 5 Responses

What type of insulation under an outdoor deck frame with 2x8s?

...vapor before the OSB? I read the vinyl floor act as a Vapor barrier. The walls I will go 2 inch, vapor and pine. The celling is all pine finish. Thanks fo...

Posted by Eric Dalpe Sept. 15, 2020, 9:13 a.m. Wall assemblies - renovation 4 Responses

Can you Insulate a cinder block basement foundation with Rockwool?

...vapor retarder or just use latex paint ? Code doesn’t require any vapor retarder in my area. But I am also trying to avoid getting condensation on cold foundati...

Posted by Victor B June 19, 2019, 11:41 p.m. Basements improvements 5 Responses

What is the best way to insulate embedded joists in a basement Montreal Home?

...Vapor barrier. The basement is also dry and not humid. The joists are fully embedded inside the concrete slab. Hence, the floor above close to the baseboard i...

Posted by Emil Idf Jan. 7, 2020, 8:34 p.m. Foundation and basement improvements 1 Responses

How should I insulate basement Walls in climate zone 5?

...vapor barrier to the concrete or between the studs and drywall and the mineral wool has no vapor barrier. Is this space between concrete and studwall a terribly...

Posted by Chad Johnson March 25, 2019, 8:33 p.m. Basements improvements 1 Responses

How do you prevent mold in a finished basement?

...vapor barrier. The scariest part is that our house was only built in 2007! Now we've managed to strip all this smelly mess out, we tried to get quotes off con...

Posted by Brian Cole Nov. 22, 2019, 10:22 a.m. Basements improvements 1 Responses

Is it OK to put 1 inch of EPS under vinyl siding with no wall insulation?

...vapor – yes, adding vapor impermeable materials to the outside of a wall assembly can cause problems during the cold season. But, the vapor permeability of EPS ...

Posted by Roger Smith Nov. 12, 2019, 6:34 a.m. Wall assemblies - renovation 7 Responses

What is the best way to deal with a drop ceiling in a high humidity room?

...vapor, condensation, evaporation - and 55% is above what I would hope to have wood framing at for extended periods.

Posted by steve Roberts Dec. 24, 2019, 8:01 p.m. Walls and ceilings - interior surfaces 1 Responses

How do you insulate a crawlspace with dirt floor?

...Vapor Barrier…. we would very much appreciate your input and advice. Cheers, Sal The first thing to mention is that if you have an uneven surface of solid roc...

Posted by sal Bellicoso Oct. 30, 2019, 4:56 p.m. Crawl spaces 2 Responses

What is the best way to insulate a concrete block house?

...vapor barrier, but that should only be installed in a cold climate, so I’m assuming you’re a bit to the north. Foil will reflect some heat, but not usually en...

Posted by kent wardecke Oct. 17, 2020, 11 a.m. Foundation and basement improvements 1 Responses

What is the best way to Insulate a basement and floor joists that are embedded into the concrete?

...vapor barrier, or even spray foam, that will prevent them from drying and it may lead to rotting, that’s a whole other can of worms you really don’t want to ope...

Posted by David Pereira April 28, 2020, 10:34 p.m. Foundation and basement improvements 2 Responses