Insulating slab floors / Guides

Zero Carbon Homes - The S1600 Prefab Eco Home is affordably Close
Planning and Design

Zero Carbon Homes - The S1600 Prefab Eco Home gets affordably Close

...slab-on-grade floor. Unlike most radiant floors where heated liquid is passed through tubing in the concrete, this is an air-heated radiant floor which has 4-inch tubes that circulate hot air to warm the concrete. Solar air-heated radiant floor insulating forms details Important note – this is not a feature t...

Roxul mineral wool batt insulation in LEED Homes
Insulation and soundproofing

Choosing the right insulation: the pros, cons and applications for walls, slabs & basements

...insulating foundation walls, it should never be installed against a cold concrete wall. See our pages on how to avoid or get rid of mold in basements for more on this. Rockwool mineral fiber insulation: Rock wool rigid board insulation © Ecohome Recycled Content : there is a minimum of 75% industrial wast...

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...

Crawl Spaces or Slab on Grade Foundations?
Crawl spaces

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

...slab on grade and a crawl space? A slab on grade, or ‘frost protected shallow foundation’ is exactly that, a slab of concrete on the ground. There’s more to it of course, but let’s start with a ‘win’ in the comprehension department shall we? A slab on grade rests directly on the ground, and a crawl space on the oth...

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

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

...slab-on-grade (or frost-protected shallow foundation), the following is a step-by-step walk though of a thickened-edge slab floor we built. XPS or EPS high-density foam is typically used under concrete slab floors, in this case we used Rockwool mineral fiber insulation ( formerly known as Roxul) . Note: Engineers at ...

Condensation on windows in our homes - why is it there? - how to stop it?
Walls and Roofs

Condensation on windows is a pain but is it a problem & how to stop it?

...insulating crawlspaces . To learn how to prevent mold in basements, see here – or how to prevent humidity and radon gas in crawlspaces see here . To learn how to build a home on a slab-on-grade foundation which is our preferred option, see here. Those pre-Christmas home renovations – People often want to freshen up t...

Passive House in Quebec
Passive House

The Passive-Aggressive House - Our History of a Passivhaus Build

...floors all winter long. A super-duper heat recovery ventilator is necessary to bring in fresh air while minimizing heat loss. And finally, the structure’s surface-area-to-volume ratio needs to be minimized. None of this involves space-age materials (you can use regular insulation, although an über amount of it), alth...

Passively-heated off-grid LEED house in Low, Quebec
Off-grid and Net-Zero Housing

Off-grid living blog: a firsthand account of building and living in a remote area

...slab is 4" inches of EPS rigid foam giving R-16. A couple other finishing details really help to reduce the basement heating loads. First, the basement concrete slab is actually encased on 3 sides by foam, coming down from the walls, and then with the foam underneath it essentially looks like a foam 'bathtub'. This sig...