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"Legalett"

Legalett / Discussions

  • 1 - 18 of 23 Posts

How do you run ducts for heating and cooling with slab on grade construction?

I will be hiring an architect to design my single floor 2200 sq. ft. home in coastal RI. My hope is to be as passive and net-zero as possible. We intend to have...

Posted by Kurt Piemonte April 24, 2025 Slab on Grade 1 response

Crawl space versus slab, which is better?

I am in the early stages of planning a new home build. Am I correct in assuming that slab on grade constuction with passive floor heating would rule out the use...

Posted by Doug Bennett Jan. 5, 2025 Foundation and basement improvements 1 response

Will air heated floors work in a northern climate?

...Legalett brought up for the approval process?  Much appreciated, Matt.    Hi Matt, we're happy to hear you’re finding what you need on the site. So about your f...

Posted by Matthew holmes March 22, 2022 Slab on Grade 1 response

Can we backfill a basement and then do slab on grade?

We have significant water issues, and would like to 'get rid of' our basement. We wondered about 'backfilling' our basement, raising the house to second story h...

Posted by susannahandjared mcisaac March 3, 2022 Slab on Grade 1 response

How long into winter can we run our Heat Pump with our Legalett System

...Legalett system or does Legalett system have to be turned on and warming the slab as well? This is a good idea, as heat pumps can be up to 3 times more efficien...

Posted by J Bergley Dec. 20, 2021 Delivery: radiant, forced-air and decentralized 3 responses

Can I do a concrete deck with pilings from Legalett?

...Legalett - I see from their site that they offer conrete deck forms that utilize EPS and air-heated in-floor tubing as the FPSF. This made me go hmmmm... might ...

Posted by Pam Proctor Nov. 15, 2021 New foundations and slab-on-grade 1 response

Can you use Comfortboard mineral wool insulation as a skirt on monolithic slab?

I am building a small structure on a monolithic slab and trying to reduce the amount of foam in the assembly.  I'm wondering if I could use comfortboard sheets ...

Posted by Eric Sokol Oct. 16, 2021 Slab on Grade 1 response

Insulation on interior or exterior of frost wall - or both - for floating slab?

I am building a foundation for a floating slab. The ~4' foundation walls sit on footings.Is it better to insulate on the inside or outside of the foundation wal...

Posted by Marc-Andre Roy Oct. 4, 2021 Slab on Grade 7 responses

What is the best way to do a radiant floor in an off grid house?

...Legalett system that you discuss in many of your articles. They have a heat exchanger that goes from liquid to their air distribution system. Would this be comp...

Posted by Julien Comtois Oct. 2, 2021 Heating and cooling 6 responses

How to you build a raft slab foundation?

...Legalett raft slab on grade kits but I don't think they provide advice on grading. Any advice would be appreciated - and also where to find a good engineer - th...

Posted by Kate Bottriell Aug. 19, 2021 Slab on Grade 1 response

Can you leave a Legalett slab in winter in Canada without the heat on?

...Legalett air radiant system  (2" or 4") make a difference? Would it simply be better to go hydronic or electrical instead of the air radiant? Thanks. Each Legal...

Posted by Gamog Cladhaire April 29, 2021 Slab on Grade 3 responses

What is the best method of building a slab on grade?

...Legalett supplies across North America and they may have  a list of local installers. 

Posted by Jay Law April 19, 2021 Slab on Grade 1 response

Can I use a Legalett slab in Florida if I don't want floor heat?

...Legalett raft slab has an optional air heated radiant floor, but it is not necessary. They are installed in all climates from the far north to the south, and ev...

Posted by Harry Dickinson March 25, 2021 Slab on Grade 1 response

Can you do an update on Ecohome’s new demo house?

Legalett's air heated radiant floor system uses a sealed, closed-loop system, in part, to control moisture in the tubing and therefore mold growth. In Ecohome’s...

Posted by dean c Oct. 16, 2019 Concept and design 1 response

How well do Legalett slab on grade floor forms work?

...Legalett system? We also believe we have a good local excavator for the septic and foundation work. 7) If so, would non-Legalett trained people need any special...

Posted by Steve Sykes Aug. 18, 2019 Slab on Grade 3 responses

Are there any updates on the progress of the second demonstration house?

...Legalett air-heated floors across Canada and the U.S. since the mid-70s, and even longer in Sweden where the company originated, so there is nothing new there; ...

Posted by dean c April 30, 2019 Solar thermal collectors 2 responses

Protection from Insects for Legalett Geo-passive super insulated slab on grade?

...Legalett slab is the possibility of insects, especially termites and/or carpenter ants infesting the EPS. Is that a danger? Among the many possible ways to prot...

Posted by James Burns April 30, 2020 Slab on Grade

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

...Legalett raft slab air-heated floor you need to vibrate the concrete with a pencil vibrator. The company provides all the instruction for concrete strength and ...

Posted by Israel Sword March 28, 2020 Slab on Grade 1 response
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