Slab foundation / Discussions

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

...slab on grade foundation for our new cabin in Montana and I've decided to sit it on a 4" EPS foam insulation so the slab will retain some passive solar heat fro...

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

What is the best wall & insulation combination for Colorado?

...slab foundation with air heated piping, as well as a wood burning stove. Thanks in advance! Most of Colorado has semi-arid climate conditions, and your temperat...

Posted by Jacob Johannessen July 2, 2020, 11:13 a.m. Efficient home design 1 Responses

Have you excavated under one of your slabs middle of winter?

...slab and the right amount of skirting and you'll never have a problem. Skirting on a slab on grade replaces the dirt of a foundation, and you can put as much as...

Posted by Mike Kolder Jan. 31, 2021, 2:31 p.m. Slab on Grade 1 Responses

What are the foundation options for a prefab house?

...slab on grade time lapse install video That slab has air tubes instead of hydronic and it is a raft slab on grade, meaning there is no footing , and it is pro...

Posted by Richard Bowie Nov. 20, 2020, 3:40 p.m. Foundations and Basements 2 Responses

Can you insulate an existing slab on grade floor?

...slab is exposed to, is at the perimeter. Insulation at that location would provide more return for the money expended and help to isoltate and moderate slab tem...

Posted by Patrick Berkeley Dec. 31, 2020, 10:14 p.m. Foundation and basement improvements 5 Responses

What is the best way to insulate rim joists with EPS and batts?

...slab to below subfloor. I have a 2-storey brick home (35 yrs old). My basement wall construction is poured concrete foundation, then a full-home perimeter cri...

Posted by Steve J July 18, 2019, 3:53 p.m. Basements improvements 1 Responses

What is the best way to renovate a basement after a flood?

...slab on top of the existing slab over that half of the basement. The 2x4 stud wall that was placed up against the foundation walls was left in place, but protec...

Posted by Wren Toombs June 18, 2018, 10:52 a.m. Foundation and basement improvements 2 Responses

What is the right amount of insulation for a house?

...slab foundation with radiant in floor heat. I saw a post with a chart showing code built, better insulated and super insulated. The chart showed monthly payment...

Posted by Ryan Gerbrandt Feb. 11, 2019, 9:57 a.m. Passive solar home design 4 Responses

Basement reno - How do I effectively insulate my basement?

...foundation. Floor joists sit atop the foundation wall on a rim joist wood-sill assembly (not imbedded in concrete). I have removed existing drywall, 2x2 studs, ...

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

Is there an update on your demo house solar air heater?

...slab foundation to do an analysis of its effectiveness? I'm wondering what the numbers are on using the solar air heated collector to provide supplemental heat ...

Posted by dean c Oct. 24, 2020, 2 p.m. Concept and design 1 Responses

How do you fix radon and water infiltration in a dry stone foundation?

...foundations from the inside can be risky, I’d talk to a local professional about that and get it inspected first. Stone and mortar foundations are much weaker t...

Posted by john flannery July 14, 2020, 4:24 p.m. Foundation and basement improvements 5 Responses

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

...slab foundation by Legalett, double frame wall system, 12 inches deep filled with dense pack cellulose insulation and a parallel sloping truss roof 15 inches de...

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

Can you insulate a concrete block basement walls with only rockwool?

...foundation/walls are concrete block and we have 2 sides done with interior plastic membrane to french drain and sump pump, one side exterior waterproofing, and ...

Posted by Aarne Valikangas Jan. 1, 2021, 9:22 p.m. Basements improvements 1 Responses

What is the best way to insulate the ceiling of my crawl space?

...slab). There is no ductwork, there is a sump pump, and the wall joists above the foundation have spray-foam insulation. Since we moved in, I know that the addit...

Posted by Judy Mendel Feb. 17, 2020, 11:10 p.m. Crawl spaces 4 Responses

How much for a 1200 square foot house will it cost me to finish the slab

...slab on grade prefab kit? If so, see this page on Legalett Geoslab foundation kits and air heated floors and you can contact them through there. If that's not w...

Posted by Walter Hale Oct. 1, 2020, 7:20 p.m. Slab on Grade 1 Responses

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

...slab on grade and a basement However, is your lot sloped in a way that creating a flat surface for a slab is a problem? If so, the Legalett prefab slab on gra...

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

Can you create a passive wine cellar by insulating and air sealing a crawl space?

...foundation is slab on grade. The existing crawl space is 4 ft tall and ventilated to the outside. The crawl space has a concrete floor. I think it would be an e...

Posted by JC Wong April 2, 2021, 6:50 p.m. Crawl spaces 5 Responses

What should I look for if I want to buy a slab on grade house?

...Slabs also tend to be closer to the ground that a standard foundation, so I would inspect the bottom of the siding to see if there is moisture damage. I would...

Posted by terry northcott March 25, 2019, 11:02 a.m. Slab on Grade 1 Responses