Ask A Question

Ask a question or share information about a project you are working on.

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. 

Can you use spray foam Insulation under a slab?

Posted by Linda Martin April 6, 2020, 11:54 a.m. Slab on Grade 1 Responses

4" air pipe quality for air heated floor?

Posted by Israel Sword March 28, 2020, 6:26 a.m. Slab on Grade 1 Responses

Should I build a basement or slab on grade?

Posted by robert baker March 27, 2020, 6:54 p.m. New foundations and slab-on-grade 1 Responses

How do you build a mold-free basement in a new construction house?

Posted by Charmaine Herzig Feb. 10, 2020, 7:32 p.m. Basements improvements 3 Responses

How do you best use polyiso insulation in a basement?

Posted by Iain Matheson Jan. 24, 2020, 7:45 p.m. Basements improvements 1 Responses

What is the best way to insulate the basement of an old house?

Posted by Bryan Squirrell Jan. 14, 2020, 7:59 p.m. Basements improvements 1 Responses

Do you have an Engineer directory for slab on grade designers?

Posted by Paul Giusto Dec. 30, 2019, 8:12 a.m. Slab on Grade 1 Responses

Can you use Foam boards on basement walls to stop condensation?

Posted by Chad Johnson Dec. 21, 2019, 7:59 p.m. Basements improvements 3 Responses

What's the difference between a slab on grade and a monolithic foundation?

Posted by Ronaldo Johnitas Dec. 10, 2019, 6:12 a.m. Slab on Grade 4 Responses

Where can I purchase non-toxic interior wall panels near Laval, Quebec?

Posted by Louise Goulet Nov. 30, 2019, 1:14 p.m. Basements improvements 1 Responses

How do you prevent mold in a finished basement?

Posted by Brian Cole Nov. 22, 2019, 10:22 a.m. Basements improvements 1 Responses

How do you apply vapor barrier and insulation to a CMU house?

Posted by Scott Brekke Nov. 22, 2019, 9:37 a.m. Basements improvements 1 Responses

Can you replace an old slab foundation with an air heated slab?

Posted by Mike Molloy Nov. 7, 2019, 8:44 p.m. Slab on Grade 1 Responses

What Should You Look For When Buying a Slab on Grade Home?

Posted by Mike Molloy Nov. 6, 2019, 7:29 p.m. Slab on Grade 1 Responses

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

Posted by peter owen Oct. 31, 2019, 3:33 p.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.