Raft slab / Guides

Prefab frost-protected shallow foundation insulated form kit
Slab on Grade

Raft slabs - How to build Insulated Frost Protected shallow foundations (FPSF) on problem soils

...slab images courtesy of Legalett . Compacting gravel for under a raft foundation Insulated slab forming systems Corner detail for insulated slab forming system Skirt detail for frost protected shallow foundation slab forms Rebar detailing for slab foundations Slab-on-grade floors are oft...

Radiant floor tube installation
Delivery: radiant, forced-air and decentralized

DIY radiant floor tubing installation video

...slab on grade construction step by step , Raft slabs for building on soft soils , and anything else about sustainable green home construction in Ecohome's green building guide pages.

Crawl Spaces or Slab on Grade Foundations?
Foundations and Basements

Slab on grade or crawlspaces, which is better?

...raft slab on expansive soils or high water tables instead of a slab with a thickened edge footing. A raft slab distributes the weight evenly over the whole surface instead of resting on an edge-loaded footing, so the risk of differential settlement or shifting is greatly reduced. A raft slab requires almost no excava...

Crawl Spaces or Slab on Grade Foundations?
Crawl spaces

Should I Build on a Slab on Grade Foundation or a Crawl Space?

...raft slab on expansive soils or high water tables instead of a slab with a thickened edge footing. A raft slab distributes the weight evenly over the whole surface instead of resting on an edge-loaded footing, so the risk of differential settlement or shifting is greatly reduced. A raft slab requires almost no excava...

Step by step guide for slab-on-grade home construction
Slab on Grade

Slab-on-grade construction: the ecoHOME A to Z Slab building guide

...slab on grade FPSF footing on soil with a high water table to prevent frost heave, by first installing drainage below the slab. Related slab on grade foundation pages: Slab-on-grade technical guide Building a thickened edge slab on grade with normal soil conditions Raft slabs on poor soil conditions to avoid ...

Slab-on-grade for Ecohome's upcoming video building guide
Slab on Grade

how to build a slab-on-grade on standard soil

...slab are poured at the same time. Here are the basic steps for slab-on-grade construction on soil that does not have a high water table and has sufficient compressive strength to carry the load of the building. For problem soils see our pages on raft slabs and building on problem soils. 1. Creating a level building...

Choosing a building lot
Excavation

Things to look for when purchasing land for building a house

...slab-on-grade , raft-slabs or screw piles . If a lot can only handle alternative building types, then that should be reflected in the asking price and if it isn't, it should be reflected in your offer. Contacting a local geotechnical engineer would be wise as they might have knowledge and experience with regional issue...

Affordable Modern Prefab Eco Homes Available - The S1600
Off-grid and Net-Zero Housing

The S1600 - affordable modern prefab eco homes for families

...raft slabs with air heated floor s are an option available all across North America, for this house as well as any other design. You can see the video showing the insulated slab forms installation and how the solar heated radiant slab on grade system works here - on the Ecohome Network Youtube channel . Reducing the ...

Prefab Passive House & LEED Kit Homes for Sale in Ontario & North Eastern US
Concept and design

Prefab Passive House & LEED ready kit homes - the future of buying a new home?

...slab on grade form kit from Legalett with 6 inches of seamless insulation under the slab and on the exterior vertical surfaces. As the ground beneath this prefab kit house is expansive clay, a raft slab-on-grade design with solar radiant heating was chosen to avoid the costly process of soil remediation that would have...

Air-heated radiant concrete floor
Delivery: radiant, forced-air and decentralized

Air-heated radiant floors

...raft slab kits and have installed over 2 million square feet in North America. 2-inch air heated tubes © Legalett Heating with electricity but avoiding peak rates: An additional benefit that can be realized with any heated concrete floor (air, electric or hydronic), is that the floor...

Frost Heave Prevention Helps Stop Frost Heaving Breaking up Home Foundations
New foundations and slab-on-grade

What causes Frost Heave? Preventing frost heaving is down to good foundation design

...slab on grade is not at any greater risk of frost heave than a basement, full stop. Read more here – Choosing between a slab on grade and a basement . You can build a basement right or wrong, you can build a slab right or wrong. Just do it right and you will have no problem. And if you happen to have bought some swam...