Concrete / Discussions

How do you keep concrete house walls from getting too hot in hot climates?

I live in the tropics and my west walls absorb too much heat, poor building design. I live in a condo and would like to put something on the walls inside to ke...

Posted by Florence A. Hawkins May 14, 2021, 7:05 a.m. Passive solar home design 1 Responses

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

...concrete. In our LEED V4 Platinum Edelweiss Demonstration house we installed a 10-mil underslab vapor barrier from WR Meadows, we found it to be extremely pun...

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

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

...concrete mix to ensure no air pockets? What is the thickness of the pipe- sch40 or more like sdr26? How far is top of pipe from top of concrete? Yes, with the L...

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

How much insulation should I install underneath my concrete slab in my basement?

I live in a cold climate - Winnipeg Manitoba, and intend to install radiant heat in the concrete slab. As my basement is below the frost line, I’m not sure if ...

Posted by Scott Antonation Sept. 27, 2019, 1:06 a.m. Slab on Grade 3 Responses

What is a thermal break solution at a door threshold?

...concrete slab floor. What is the best method to support very heavy sliding doors and eliminate thermal bridging? I really like the Legalett Thermasill product...

Posted by Shaun B Sept. 13, 2020, 6:31 a.m. Slab on Grade 2 Responses

Are Insulated Concrete Forms and Gigacrete panels good?

I want to build a house to passive house standards and keep it to a relatively small budget. I stumbled upon ICFs and Gigacrete while researching building mate...

Posted by Dallin Sumpter Feb. 21, 2019, 2:46 a.m. Wall assemblies - new construction 5 Responses

Is sealing basement concrete floor against radon a good idea?

...concrete sealing method - How to seal and polish concrete floors - non toxic silicate sealer

Posted by Tim Hanrahan Sept. 18, 2020, 3:11 a.m. Radon in Homes - Mitigation 3 Responses

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

...concrete. That’s another issue where you need to be careful. Concrete is porous so as it is likely not protected from exterior moisture, it will stay wet. What ...

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

What is the best way to heat an off grid home?

...Concrete slab floor with frost wall I will run with the assumption that your house is not yet built otherwise you would already have a heating solution, is that...

Posted by Michelle Nason Aug. 8, 2018, 1:48 p.m. Off-grid and Net-Zero Housing 3 Responses

What is the best way to insulate my basement?

...concrete step foundation down toward the rear with framed walls on top. The framed areas have fiberglass insulation but the concrete is bare. I want to finish...

Posted by Chris Rogers Oct. 27, 2019, 11:23 a.m. Foundation and basement improvements 1 Responses

What insulation should I put on basement block walls that is resistant to mold?

Concrete block basement wall. Moisture issue in spring ( and I suspect fall). We get a lot of people asking about the best way to insulate a cinder block (CMU)...

Posted by Ken Gee July 31, 2019, 3:25 p.m. Basements improvements 4 Responses

Why are half of my basement walls are not insulated and should I add insulation?

...concrete but the bottom half of the walls are left uninsulated. I have a wood framed 2x4 wall an inch off the concrete. How should I insulate the bottom before ...

Posted by Jake Morel Dec. 28, 2020, 8:58 p.m. Basements improvements 0 Responses

Which is the best basement insulation?

...concrete wall and 4' knee wall built with 2x6 and batt insulation r22. Should I run rigid insulation inside the foundation wall up the concrete and cover the kn...

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

What flooring options work with a passive solar design?

...concrete floor with radiant heat will help to hold heat within the house for the longest period of time. My wife is not a fan of concrete/tile floors within the...

Posted by Christopher Dunn Feb. 23, 2020, 11:50 a.m. Passive solar home design 1 Responses

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

...concrete, this would prevent any drying to the interior - would I have moisture buildup against the concrete, but is this not a problem since the concrete is po...

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

What is the best way to insulate a Multi-material wall?

...concrete block visible on the outside. The outside of the house is brick to poured concrete. The inside of my cold room, with the three materials (concrete, c...

Posted by Steve J Sept. 29, 2020, 10:15 a.m. Wall assemblies - renovation 7 Responses

Can you install foam boards directly against basement walls?

...concrete. A mold expert told me to put the board on top of the framing, not directly onto the concrete wall so the house can breath. What is the right course of...

Posted by Ted Gorab Oct. 3, 2019, 6:09 p.m. Basements improvements 16 Responses

Is it possible to do a mono pour if you have a covered porch?

...concrete slab is insulated, how do you manage to get the covered porch concrete poured at the same time? How does it work for the insulation? The section where ...

Posted by Frank Gascon Aug. 10, 2020, 8:05 a.m. Slab on Grade 1 Responses