ICF / Discussions

What is the best way to stop thermal bridging between my ICF walls and my footing?

Unisulated footing under ICF walls allows thermal bridging into the concrete core of the wall allowing energy stored in the thermal mass to bleed into the soil...

Posted by Walter van den Broek Sept. 18, 2020, 11:23 a.m. Foundation choices 1 Responses

Could we use a raft slab with ICF walls on a sloped site?

...ICFs in lieu of the tires that Mike Renolds advocates, as I am 73 yrs old and stacking and filling hundreds of used tires is WAY beyond my capabilities. I guess...

Posted by Paul Fischer Sept. 15, 2020, 2:21 p.m. Slab on Grade 1 Responses

Are Insulated Concrete Forms and Gigacrete panels good?

...ICF and Passive house, I would suggest having a look at ThermalWall, a rigid insulation panel designed to attach to ICF blocks (above or below grade) that can h...

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

What is your experience and thoughts on pre-fab wall assemblies?

I'm evaluating several wall construction methods like ICF, Double stud wall, and pre-built wall assemblies. What can you tell me about your experience with pre...

Posted by Shaun B Nov. 12, 2019, 4:16 p.m. Wall assemblies - new construction 2 Responses

What is a thermal break solution at a door threshold?

...ICF blocks serving as a frost wall. Our exterior above grade walls will also be ICF with the addition of 3.5" of EPS panels on the exterior. We will have a conc...

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

Can you elevate a slab on grade foundation?

...ICF foundation, going down below frost level (4ft. Up north) a better route? Or do you suggest something altogether different? Keeping in mind I'm trying to b...

Posted by Raoul Lions July 27, 2019, 2:47 p.m. Slab on Grade 3 Responses

Can you install electric wire in floor heat cables and cork flooring?

...ICF frost wall with 4 inches of rigid insulation giving me R20 laid over the vapour barrier, then Ouellet OWC-M series electrical heating cable laid under 4inch...

Posted by C Whitby Aug. 7, 2020, 6:43 p.m. Flooring and stairs 1 Responses

Should I replace my geothermal system with a gas boiler?

...ICF walls basement to roof, infloor heating in basement, geothermal heating (closed loop, 6 wells 200 ft deep), triple E argon windows, R50 attic insulation, et...

Posted by Lawrence Brusnyk Oct. 31, 2018, 8:07 p.m. Heat pumps, geothermal and AC 1 Responses

Have you heard of Gigacrete and is it any good?

Do you have any reviews or suggestions for Gigacrete homes? They seem eco-friendly with a tight building envelope. There's just not much info out there. Hi Sas...

Posted by Sasha P Aug. 29, 2019, 4:21 p.m. Wall assemblies - new construction 2 Responses

Are slab on grade foundations cheaper than a basement?

...ICF hybrid to avoid some hidden costs, see our page about raft slabs for poor soil quality here . But where near Portland, is it urban or country? What type of ...

Posted by Jason Nov. 21, 2019, 4:12 p.m. New foundations and slab-on-grade 1 Responses

How do you choose between a basement or slab on grade?

...ICF Foundation wall on it, leaving you with a basement thoroughly insulated with no thermal bridging and a reduced chance of mold forming compared to standard b...

Posted by A. Delmas May 21, 2020, 8:59 p.m. Foundation choices 1 Responses

What do you think of Legalett Wall Insulation?

...ICF basements but they are perfect for exterior Insulation These are panels that come in 4x8 sheets up to 8 inches thick with a metal rail in the middle to secu...

Posted by Igal H Aug. 19, 2020, 3:52 p.m. Walls and Roofs 1 Responses

Where do I start to build a small, affordable, low-maintenance house?

...ICF Form Kits Slab-on-Grade Foundation Detail & Insulation, Building Guide To stay on budget when building a home, you need to carefully plan the steps ah...

Posted by Ocean-Lynn Georgelin Oct. 22, 2019, 11:40 p.m. Concept and design 2 Responses

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

...icf slab on grade forming kit (with optional air heating) could accomodate the footings for poles, I'm not certain - so I'd suggest asking the friendly team at ...

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

What are the factors I should consider for choosing between a slab on grade and basement?

...ICF advocates (insulated concrete forms) that would argue in favour of basements, including bottom to top ICF walls; those builders would argue there isn’t a gr...

Posted by Shaun B April 2, 2019, 6:35 a.m. Slab on Grade 3 Responses

Is there a concrete admixture to prevent water leaks?

...ICF foundation a new building :) We are going to waterproof the concrete. But wonder if we should add additive as the last defence

Posted by Frank Liu July 4, 2020, 6:03 p.m. Waterproofing and drainage 2 Responses

How well do Legalett slab on grades work?

...ICF slab forms. 2) How are those issues usually addressed? What issues?! :) 3) What is the long term track record of Legalett slabs? There are about a m...

Posted by Steve Sykes Aug. 18, 2019, 3:21 p.m. Slab on Grade 1 Responses

What is the best insulation Under 2" Cement flat Roof in NYC?

Hi there For NYC What is the best insulation Under 2" Cement slab Roof for energy efficiency and water leaks? Maybe 2 layers? The base for the roof will be M...

Posted by Rafael Mor March 29, 2019, 5:19 a.m. Roof assemblies - new construction 1 Responses