Wall / Discussions

How to you build a raft slab foundation?

...wall, and how this relates to our choice of foundation. I've been looking at the Legalett kits but I don't think they provide advice on grading. Any advice woul...

Posted by Kate Bottriell Aug. 19, 2021, 5:25 a.m. Slab on Grade 1 Responses

What heating system to use in my new detached garage/shop?

...wall and R-40 roof insulation. There will be a south facing wall with a window section of 18' long x 8' high. I want to take advantage of the passive solar ga...

Posted by David Perreault Dec. 4, 2020, 10:23 a.m. Delivery: radiant, forced-air and decentralized 0 Responses

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

...wall system, 12 inches deep filled with dense pack cellulose insulation and a parallel sloping truss roof 15 inches deep again filled with dense pack cellulose ...

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

How do you attach steps to slab on grade insulation?

...wall plane. The problems my designer brought up are: 1) the difficulties in either securing flashing over the top and partially down the side of the insulatio...

Posted by Mary Alm Dec. 2, 2021, 11:24 a.m. Slab on Grade 3 Responses

How do know if I have a gas leak ? It's a ventless heater

...wall heater. He claims he smells nothing. I smell it in the house as he installed it and I hear hissing. I no longer have asthma but my lungs have a hard time I...

Posted by Margherita Sewell Jan. 29, 2021, 4:59 a.m. Healthy indoor air quality 1 Responses

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

Here is my problem: I have polyurethane spray foam inside the assembly cavity of my walls and unvented flat roof ceiling. It's impossible to air seal all the j...

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

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

...wall on the interior of the windows. This is not condensation on the windows but water coming from the wall cavity and dripping down. The flashing I was referri...

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

How do you prevent mold in a finished basement?

...wall we were disgusted to find that our basement wall framing was rotten in multiple areas and the insulation was full of mold behind the vapor barrier. The sca...

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

How do you create a slab on grade on a slope?

...walls as a draining retaining wall that could also be partly planted. A nice drainage layer of stone with insulating skirt should prevent frost-heave, and insta...

Posted by Adrienne Rayna June 30, 2020, 3:58 p.m. New foundations and slab-on-grade 3 Responses

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

...wall is still full-height poured concrete. The rest of the basement is below-grade. We aren't going to be drywalling our basement soon (maybe someday), but I ...

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

What is the optimal setup for mechanical systems for slab on grade?

...wall-mounted interior unit and independent ductwork for the ERV. The other option is a Lunos wall insert HRV which doesn't require any ductwork . As you can t...

Posted by Dave Nuttall July 6, 2019, 9:42 a.m. Mechanical systems 1 Responses

Is there any risk to a concrete foundation from adding interior insulation?

...wall with mineral wool batts and drywall with latex paint. I'd like to do something simple (EPS + plywood) on the concrete floor too. The rest of the house is d...

Posted by Drew Tozer Jan. 5, 2021, 12:57 p.m. Basements improvements 9 Responses

Followup to the question How do you install Larsen Trusses on a home in Minneapolis?

...walls with oil paint, 2x4 studs, and is insulated with blown in cellulose. The exterior sheathing boards are1x's. I’ve done thermal scans of the walls. There do...

Posted by Ken Traefald Feb. 27, 2020, 1:49 p.m. Wall assemblies - renovation 1 Responses

What is the best heating system to upgrade a 100 year old building?

...wall heaters. The whole system is known to be inadequate and we would like to be able to suggest something better as part of our design. Is there any advice you...

Posted by Rachel Codd Oct. 25, 2021, 3:52 p.m. Heating and cooling 3 Responses

How to air seal & ventilate a partial gut reno of a 1901 house?

...wall cavities, so I know there's insulation in the walls of the rooms whose walls we did not demo. There don't seem to have been any moisture problems caused by...

Posted by Zach Zill Feb. 7, 2021, 4:33 p.m. Air and vapour barriers 0 Responses

What is the best way to install 5" of XPS rigid foam on interior basement walls?

...wall is fine, there is no need for a "breathing space" between wall and foam. My plan was actually to forego a stud wall and directly fasten the wallboard to fu...

Posted by Sean MacDonald June 14, 2021, 10:42 a.m. Foundation and basement improvements 8 Responses

Does strapping’s nailing jeopardize membrane integrity?

...wall system will make all the difference in durability and performance. This page would be good to see also, about how to install siding so walls can dry . In...

Posted by GUY DUPONT Nov. 26, 2021, 11:12 p.m. Air and vapour barriers 3 Responses

What is the best exterior insulation to put over existing double brick?

...wall construction and application of the insulation & siding over the existing brick. I've done a fair bit of research and had a couple of people suggest that i...

Posted by Andrew T July 19, 2021, 8:19 p.m. Wall assemblies - renovation 1 Responses