Vapour / Discussions

Can you use a vapour retarder paint on the ceiling instead of using a poly vapour barrier?

...vapour retarder paint along with an outside air barrier. Can you do this for the ceiling as well, thereby taking out that possible weak spot where the vapour ba...

Posted by Anwas Qwelten June 8, 2019, 3:56 p.m. Air and vapour barriers 2 Responses

How do I create a complete air barrier using a vapour retarding primer?

...vapour movement comes from the fact that usually one product (6-mil polyethylene) is used as both the vapour barrier AND air barrier, but air leakage and vapour...

Posted by Mihai Wilson May 3, 2018, 10:15 p.m. Wall assemblies - renovation 1 Responses

How do you do a Vapour Barrier in a Dense Pack Cellulose Wall?

...vapour barrier’ is a little misleading, hence my use of the term ‘vapour control layer’. And yes, you need some type of vapour control layer. I will look over...

Posted by Ian MacKay July 26, 2018, 2:48 p.m. Wall assemblies - renovation 3 Responses

I'm looking at installing rigid insulation the exterior of My Double brick 1880s

...vapour diffusion becomes a bit more manageable. One option may be to apply vapour barrier paint / vapour retarder primer as we did on a demo house a few years a...

Posted by Gordon CASWELL Dec. 13, 2019, 11:38 a.m. Wall assemblies - renovation 1 Responses

Does using T & G wood plank instead of drywall affect where we put the vapor & air barrier?

...vapour barrier, meaning vapour will move through it so slowly that it would qualify as a vapour barrier, but it is highly unlikely youll find a building inspect...

Posted by Sue Colbourne Nov. 9, 2019, 6:16 p.m. Walls and ceilings - interior surfaces 3 Responses

What is the best way to Insulate the crawl space of an old home?

...vapour barrier and what to do around vents and plumping pipes when installing. There are a couple of ways to insulate the crawl space of an old home, either you...

Posted by Aj Jan. 21, 2020, 8:13 a.m. Crawl spaces 1 Responses

How do you build a cathedral ceiling?

...vapour barrier first, then the rest of the cavity will be filled with dense pack cellulose insulation, with an intello vapour barrier holding cellulose all in. ...

Posted by Raoul Lions Oct. 19, 2019, 8:07 a.m. Roof assemblies - new construction 1 Responses

Is There a Difference Between an Air Barrier and vapor barrier?

...vapour barrier is compromised, and this is a result of accumulated moisture thawing. I'm reluctant to replace a perfectly good roof until I need to. It is a rub...

Posted by Sherri Mccormick Aug. 17, 2018, 3:24 p.m. Roof assemblies - renovation 3 Responses

I want to insulate the outside of my house, which type of insulation do you think is best?

...vapour barrier, some are not. Some are air barriers, some are not. XPS foam insulation at about 1 inch thick will act as a vapour barrier, EPS foam insulation w...

Posted by Joe F Nov. 15, 2017, 10:34 a.m. Wall assemblies - renovation 7 Responses

Can you spray foam a house from the outside?

...vapour build up if we have a mix of plaster and lathe in the older parts of the house, with fiberglass and interior vapour barrier in the new parts? Yes you cou...

Posted by Joan Lawrence July 11, 2019, 7:17 p.m. Wall assemblies - renovation 3 Responses

What is the best to insulate metal structures for all seasons?

...vapour barrier would be a bad idea. Instead, one would want to rely on a very good air barrier, preventing air flow, but allowing moisture to dry. I understand ...

Posted by Morgan Aldridge Jan. 19, 2019, 1:53 a.m. Wall assemblies - new construction 1 Responses

How do you prevent walls from rotting in humid climates?

...Vapour barrier have had mould show up in less than 2 years on his north wall. How can we avoid getting mould? If your neighbour had their walls rot that could b...

Posted by Rose Alderson Nov. 5, 2018, 4:34 p.m. Wall assemblies - new construction 1 Responses

How do you fix a moisture problem in a finished basement?

...vapour barrier, so you wouldn’t need to apply a typical 6 mil polyethylene vapour barrier on the wall after the foam (though in some areas building inspectors m...

Posted by Margo MACFARLANE Oct. 28, 2019, 10:24 a.m. Foundation and basement improvements 1 Responses

Can I put a breathable peel and stick weather (air) barrier on the inside walls and ceiling?

...vapour barriers, but stop any air and thus condensation. There would be no problem adding a peel-and-stick membrane that covers interior spray foam , and it wou...

Posted by Anomika Singhn Oct. 1, 2018, 9:56 p.m. Air and vapour barriers 1 Responses

What do I in my basement where new insulation meets old?

...vapour methods and insulation types? (Old Poly vapour sheet and fibreglass insulation vs new Rockwool and EPS) How do address the areas where the EPS is adjac...

Posted by Steve J July 20, 2019, 10:01 p.m. Basements improvements 2 Responses

What type of Insulation can I use on the exterior of my home?

...vapour barrier. XPS has a nice R value per inch, but again, if you refer to that page on rigid board insulation above you'll see that it's also a vapour barri...

Posted by Scott Muller April 18, 2019, 2:19 p.m. Wall assemblies - renovation 6 Responses

Basement reno - How do I effectively insulate my basement?

...vapour barrier laytex paint. Which EPS thickness should I go with? Concrete Slab: DMX aiflow dimple mats +(3/4" EPS, needed? ) +OSB +flooring of choice Head...

Posted by Steve J Feb. 13, 2019, 10:25 p.m. Foundation and basement improvements 2 Responses

What windows should you use when trying to build a Passive House?

...vapour barrier in roof system ( Hot roof). Both exterior and interior will be clad with log siding. I wanted to use wood windows to maintain as much as a rust...

Posted by Raoul Lions Jan. 25, 2019, 2:18 p.m. Windows and doors 1 Responses