Thickness / Discussions

How do you determine the thickness of concrete for slab on grade construction?

...thickness for a new construction of a slab on grade that will have only liquid forces acting down on it? I don’t know what you mean by liquid forces, but the am...

Posted by Ackeem Beason Feb. 16, 2021, 2:46 a.m. Slab on Grade 1 Responses

What thickness of insulation and concrete do you recommend in a floating slab?

...thickness to be for the insulation and the concrete for the slab and radiant floor system? Thank you. If you install only 2 inches of insulation under a slab wi...

Posted by Marc-Andre Roy April 21, 2021, 7:38 a.m. Slab on Grade 3 Responses

The thickness of vapor retarding latex paint - Is measurement wet or dry?

...thickness cited in an ecohome article was 0.00031. The technical data for the paint has a wet thickness that matches the article but a much smaller dry thicknes...

Posted by Kim Boas July 24, 2020, 10:36 a.m. Basements improvements 3 Responses

How well does the Legalett air heated floor work when pouring concrete?

On the 4" air pipe system I was wondering if you have to vibrate the concrete mix to ensure no air pockets? What is the thickness of the pipe- sch40 or more li...

Posted by Israel Sword March 28, 2020, 6:26 a.m. Slab on Grade 1 Responses

What is the best insulation for a small energy neutral home project?

...thickness (it doesnt get too cold where I am, almost never below 0F). Theres so much different advice out there for this... I'd also be very interested in any o...

Posted by Dan Gull Nov. 11, 2019, 6:40 a.m. Off-grid and Net-Zero Housing 4 Responses

Basement reno - How do I effectively insulate my basement?

...thickness should I go with? Concrete Slab: DMX aiflow dimple mats +(3/4" EPS, needed? ) +OSB +flooring of choice Header/Rim Joist: Not sure... Since this is...

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

How thick should EPS foam insulation on basement walls be?

...thickness . I wouldn’t be in a position to speak to what performance statistics an individual manufacturer claims on their site, but the generally accepted pe...

Posted by Derrick R March 17, 2021, 9:13 p.m. Insulation and soundproofing 3 Responses

What is the best material to use on top of plywood for water proofing?

...thickness, tape or fluid-applied gun, which brand? Hi Babak, Plywood is a bit of a in improvement over OSB as sheathing if you're looking for the ideal wall ass...

Posted by Babak K July 27, 2020, 12:22 a.m. Air and vapour barriers 3 Responses

What is the best exterior Wall and Roof Rigid Insulation for a barn renovation?

...thickness might not be quicker, stronger and cost effective overall - see this article about how to insulate external walls of an existing home for more details...

Posted by Ron Busch June 27, 2020, 3:50 p.m. Wall assemblies - renovation 1 Responses

Can you use spray foam Insulation under a slab?

...thickness of concrete may in turn vary as well, so you may need a little more, or it may be too thin in some areas. The only reason I could even think of to u...

Posted by Linda Martin April 6, 2020, 11:54 a.m. Slab on Grade 1 Responses

Is a vapor barrier necessary under a concrete slab with foam insulation and if so, where does go?

...thickness. If a Radon Block barrier is more than you can afford in your budget, I would at least consider a thicker poly membrane of 10 or 15 mil. With only 6...

Posted by Grady 22 Aug. 17, 2019, 12:19 p.m. Air and vapour barriers 3 Responses

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

...thickness (foil is waterproof). You can read all about rigid insulation panels here . Installing insulation that acts as a vapour barrier on the outside will ...

Posted by J. Ferguson Nov. 15, 2017, 10:34 a.m. Wall assemblies - renovation 12 Responses

Should I densepack wall cavities prior to exterior insulation?

...thickness. That puts us in the 2in range for insulation. My wife also prefers the "outie" windows which as you know presents it's own set of challenges. In tr...

Posted by Gordon McNair April 13, 2021, 9:21 a.m. Wall assemblies - renovation 3 Responses

Which is the best basement insulation?

...thickness Where EPS begins to act as a vapor barrier, so depending on your climate zone and ideal construction method, a building inspector may or may not accep...

Posted by Alex Kesheshian April 23, 2020, 12:29 a.m. Basements 1 Responses

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

...thickness I would say. But, that said – for occasional use and specifically with an infrared heater (which is a pretty efficient way to keep people warm in an...

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

Can I add Larsen Trusses and cellulose to 1920s House in Minneapolis?

...thicknesses. If I go this route, I'm thinking of putting 2 sheets up, then the horizontal nailers, then two more sheets. If I opt to insulate the basement outsi...

Posted by Ken Traefald Feb. 17, 2020, 2:30 p.m. Wall assemblies - renovation 3 Responses