Membrane / Discussions

How do you make an airtight house envelope?

...membrane as the air barrier before you apply any rigid insulation. We did that on one of our demo houses and hit PH airtightness levels, you can see a video of ...

Posted by Valeriy Kraydman Dec. 1, 2020, 2:52 p.m. Air and vapour barriers 1 Responses

What is the best way to insulate a home from the outside?

...membrane over top as an air barrier. If you do add new plywood sheathing, you could just tape the joints and it will act as your air barrier Read all about ho...

Posted by Sylvie Gagnon Dec. 12, 2017, 11:58 a.m. Wall assemblies - renovation 1 Responses

Can basement walls to dry to the inside with foam board?

...membranes, unless there has been a footing membrane included and I’ve never seen one installed that was at my doing. You an image of what a footing membrane loo...

Posted by Tim Hanrahan Aug. 20, 2020, 12:34 a.m. Basements improvements 6 Responses

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

...membrane hardly offers any thermal protection at all. A 1920s home would not have been built with an interior vapor barrier , but as it likely has multiple co...

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

Is EPS or XPS better for use in basement rim joists? Should faced or unfaced foam boards be used?

...membrane then it is even less permeable that XPS, because the foil itself is a vapour barrier. See this page all about rigid insulation panels - The differenc...

Posted by Thomas Dispenza Sept. 8, 2019, 12:43 a.m. Basements improvements 6 Responses

Combo structural sheathing, WRB and thin insulation panel in Ontario?

...membrane, which is for sure a vapor barrier, and you wouldn’t want that on the exterior of a wall in Ontario. The BP product looks to be more breathable, that...

Posted by Steve Bull Jan. 14, 2020, 6:06 p.m. Walls and Roofs 3 Responses

Can you put hemp insulation in an attic?

...membrane first to prevent and air and vapor movement (assuming you are in a cold climate, but please confirm). On top of that you could lay down hemp insulati...

Posted by Pamella Weatherly-Phillips Aug. 16, 2019, 11:49 a.m. Roof assemblies - renovation 1 Responses

How do you attach exterior siding without affecting the air barrier on a passive house?

...membrane you apply and tape you choose, just be very careful during installation. Be careful not to puncture it, and when you do, be sure to tape it. Try to avo...

Posted by Scott Bowker July 16, 2018, 11:07 p.m. Wall assemblies - new construction 3 Responses

Can you install foam boards directly against basement walls?

...membrane and not just the bitumous spray. Since you likely don't have such a membrane on the exterior, the blocks will always have a certain amount of moisture ...

Posted by Ted Gorab Oct. 3, 2019, 6:09 p.m. Basements improvements 14 Responses

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

...membrane installation video ), or you can use the standard 6 mil poly interior vapour barrier as an air barrier. Keep in mind that poly vapor barriers in homes ...

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

how can I find diy green roof supplies in the Vancouver area?

Would like to put a green roof on our existing garage, its approx 70 years old. Where can we get materials to b iuld like to do it ourselves?

Posted by Rachel Riding April 13, 2020, 12:15 p.m. Roof coverings 0 Responses

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

...membrane that covers interior spray foam , and it would definitely give you an excellent air seal. page explains all about weather barriers - Choosing a weath...

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

Do I need a standard 6 mil poly vapor barrier with dense cellulose exterior wall?

...membrane instead of straight poly Gregg- Thanks, why do you favor rockwool? Due to its being less prone to moisture issues? I agree with the idea of a breathabl...

Posted by jeff Chormann May 1, 2020, 9:18 a.m. Air and vapour barriers 2 Responses

What can I do to prevent mold and musty smells from a crawlspace with a dirt floor?

...membrane to prevent moisture in the dirt from evaporating into the air. But one question first, where are you located? Are you in a high-risk area for Radon con...

Posted by bonna gordy May 15, 2020, 8:16 p.m. Crawl spaces 1 Responses

How do insulate the outside of a log home?

...membrane directly to the logs, then the insulation directly to the membrane with no air space. Attach the insulation boards with vertical strapping (not horizon...

Posted by Michael Hickey Aug. 2, 2018, 6:03 p.m. Wall assemblies - renovation 1 Responses

How you vent a metal roof?

...membrane covering the wooden roof deck Rigid foam panels Drainage plane membrane Vertical strapping (for air space) Horizontal strapping (To accommodate...

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

How do you build a mold-free basement in a new construction house?

...membrane, the ‘paper’ threw me off there : ) That is standard practice in most locations to put a waterproof drainage matt or membrane on the exterior of founda...

Posted by Charmaine Herzig Feb. 10, 2020, 7:32 p.m. Basements improvements 3 Responses

How do you fix moisture problems in basement?

...membrane like Delta MS against a foundation wall before studs is a great idea . Keep in mind though, that moisture may drain down the interior or the wall, so i...

Posted by John rodrigues Nov. 27, 2020, 8:50 a.m. Basements improvements 3 Responses