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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. 

What are the foundation options for a prefab house?

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

What is the best way to do a basement renovation?

Posted by BIG FOOT Nov. 18, 2020, 9:33 a.m. Basements improvements 1 Responses

Does slab on grade need to have in floor heating?

Posted by Lauren Panzani Nov. 13, 2020, 11:06 a.m. New foundations and slab-on-grade 1 Responses

How do insulate a basement slab that is sloped ?

Posted by Louis-François Lapointe Nov. 11, 2020, 10:34 a.m. Basements improvements 1 Responses

Should I vent the space between a block wall and vapor barrier?

Posted by Nick Santore Oct. 10, 2020, 2:03 a.m. Basements improvements 1 Responses

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

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

Can you install a slab on grade foundation in the Fall and leave it over winter?

Posted by Matthew Gioia Sept. 21, 2020, 9:15 p.m. Slab on Grade 1 Responses

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

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?

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

What is a thermal break solution at a door threshold?

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

Can basement walls to dry to the inside with foam board?

Posted by Tim Hanrahan Aug. 20, 2020, 12:34 a.m. Basements improvements 3 Responses

Can my shallow crawl space be converted to a slab foundation?

Posted by Sian O'Keefe Aug. 15, 2020, 12:52 p.m. Slab on Grade 1 Responses

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

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

About

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.