Insulating basement floors / Guides

Basement wall insulation
Insulation and soundproofing

Properly insulating basements and concrete slab floors

...Insulating a basement is a great idea if it wasn't insulated when built , as before we began insulating foundation walls and below slabs (see slab on grade) , it was generally estimated that basement heat loss accounted for about 1/3 of the total heat loss of a house. It is likely that such an abysmal starting place ma...

How to insulate basements properly
Insulation and soundproofing

Best practices for basement insulation in new home construction

...basement insulation and heat loss © Ecohome Exterior basement insulation is less common, probably due to the fact that it can be more expensive. And there are certainly less cases where insulation is installed on both sides. By insulating the exterior of basement walls we consume less interior space and preve...

Slab on grade for a Passive Solar LEED Home insulated by Rockwool © Ecohome
Insulation and soundproofing

Insulating below slab-on-grade floors

...Insulating below slab-on-grade foundations Why insulate under a slab on grade foundation? For comfort, and to save money, that's why! In many areas Building Code has fallen behind common sense on what specification of insulation to use under a slab , It is common to install as little as R5 insulation below slab floor...

Slab on grade or a foundation and basement?
Foundation choices

Slab-on-grade vs foundation and crawlspace or basement

...Insulating under concrete floors is essential Many building codes have only recently insisted on the inclusion of insulation below concrete basement floors , and as always, it is important to realize that the requirements of building codes are the bare minimum only. Increasing sub-slab insulation to R15 or R20 (or mo...

Slab-on-grade construction technical guide
Slab on Grade

Slab-on-grade technical guide

...basement with much cheaper and better performing walls, though if you do need to build a basement to optimize sqft on your building plot, then learn best practice for insulating when building a new basement here , or if you have a basement and need to learn how to finish a basement & insulate correctly to avoid mold, s...

Crawlspace radon barrier installation for radon mitigation
Radon in Homes - Mitigation

Removing radon gas from basements and crawlspaces

...basement floors, this is possible in a crawlspace also if it is flat enough - though very few are. Radon mitigation example for when installing a basement floor, radon prevention is better than a cure Air sealing between floors to stop radon: If you have extremely high levels of radon, the Radostat and HRV ...

Renovate, Remodel or Rebuild? How to choose which is Best for Homes
Wall assemblies - renovation

Should I be renovating my home or tearing it down & rebuilding?

...basement. Cinderblock basement foundation timber stud wall being demolished due to moisture damage © Ecohome Basements are better repaired from the outside if possible but can also be done from the interior if excavating to access the exterior is not an option. For cost consideration, if it doesn’t require ma...

Off grid, passively heated and cooled house in the Gatineau Hills, Que
Off-grid and Net-Zero Housing

Off grid living blog, part 2: passively heated, this house in Quebec aims for LEED certification

...floors warmed by a propane boiler. A double exterior wall system reduces heat loss to a fraction of what you would expect from most other new houses being built. Off Grid Homes can also be attractive © Bala structures Exterior wall composition - from inside to out: Gypsum board with zero...

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

...floors or air heated radiant floors . The financial investment put towards the comfort of radiant floors can arguably be redirected towards insulation instead. Radiant floor heat is a comfortable heat, but with sufficient subfloor insulation you can mitigate the discomfort of cold associated with concrete floors by kee...

Passive home designer Harold Orr, one of the original high performance homes
Passive solar home design

The principal designer of the house that inspired the global Passivhaus movement reflects on the project that started it all.

...insulating the basement walls all the way to the footings and insulating the basement floor would result in frost damage to the foundation. This has since been disproven, but it was a serious concern in how to insulate a basement if one was installed. The floor joist space was blown full of cellulose fibre to insulat...

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...