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New foundations and slab-on-grade

The first step to Green home design and construction is deciding what sort of base you will rest it on. The Guide pages below help choose between slab-on-grade construction, traditional strip foundations with crawlspace and basement foundations - then show step by step how to build them better. 

Why is there frost build up on basement walls? (poured concrete)

Posted by William Hackett April 7, 2022, 1:33 p.m. Basements improvements 1 Responses

Will air heated floors work in a northern climate?

Posted by Matthew holmes March 22, 2022, 9:59 a.m. Slab on Grade 1 Responses

Does ground under exposed concrete have a deeper or shallower frostline?

Posted by scott wanks March 3, 2022, 5:02 p.m. Slab on Grade 1 Responses

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

Posted by susannahandjared mcisaac March 3, 2022, 4:20 p.m. Slab on Grade 1 Responses

What maintenance needs to be done on a slab on grade foundation?

Posted by Diane Arsenault March 1, 2022, 1:28 p.m. Slab on Grade 1 Responses

Engineered Slab on Grade or Footings

Posted by Jeff Ryan Feb. 15, 2022, 9:59 a.m. Foundations and Basements 1 Responses

Can you build Slab on grade as an extension on an existing house with a crawlspace?

Posted by Lana Mcgeary Jan. 19, 2022, 11:09 a.m. Slab on Grade 2 Responses

How would you do a Slab on Grade with a post and bean garage in New Hampshire?

Posted by Robert Nordman Jan. 19, 2022, 10:49 a.m. Slab on Grade 1 Responses

Can you build foundations and slabs with field stones?

Posted by Bryan Squirrell Jan. 3, 2022, 9:50 a.m. Foundation and basement improvements 1 Responses

Can I put foam boards up after I frame a basement?

Posted by Paul Hylan Dec. 27, 2021, 11:53 p.m. Basements improvements 1 Responses

How do you attach steps to slab on grade insulation?

Posted by Mary Alm Dec. 2, 2021, 11:24 a.m. Slab on Grade 3 Responses

What is the best way to build a slab on grade foundation?

Posted by Earl Williams Nov. 30, 2021, 12:25 p.m. Slab on Grade 3 Responses


New foundations and slab-on-grade

Traditionally in North America, home construction starts with a crawlspace or concrete basement foundation. Depending on the situation there are other options that can be more durable and affordable that will better protect your home air quality and energy efficiency - especially important for LEED, Passive House, ZNE or in the future Net Positive Energy homes.

The first factors to consider when designing the foundation of a home are lot size and soil conditions. When space is limited (with total footprint or height restrictions) a basement foundation may be the best option, but if space allows there is a strong case for avoiding basements altogether with a slab-on-grade foundation design.