Wall assembly / Guides

Passive House wall system ; Larsen Trusses & dense-packed cellulose insulation
Wall assemblies - new construction

Larsen truss wall systems with double-stud construction & extra insulation for new homes & energy efficient home renovation

...walls and roof. Larsen trusses are not structural or load bearing, ; their intention is simply to facilitate a thicker wall assembly for added insulation, and to place the vapor barrier at the 2/3rds point in the wall assembly creating all the advantages of a double-stud wall assembly without many of the problems, li...

Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope - starting with the perfect wall

...wall assembly may serve more than one function, air barriers in particular. Many materials within a wall assembly can slow air flow without trapping vapour. Option 1) Dense-packed cellulose wall: Dense-packed cellulose wall © Gergana Gatina, Ecohome This is a wall of offset 2x4s (interior then exterior) with ...

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

...wall are plenty. It eliminates thermal bridging through studs, provides lots of room for insulation, and the air/vapour barrier is sandwiched between walls where it won't need to be punctured for electrical work, as all wiring is done on the interior 2x4 wall. High efficiency Double wall assembly © Bala...

How to Insulate Exterior Walls from the Outside US Canada Ecohome
Walls and Roofs

The easiest way to insulate walls from the exterior in older homes

...wall is built to make sure you are not creating a condensation point at a dangerous place within the wall assembly, or preventing internal moisture from the occasional leak in the exterior skin from running away, so the wall structure can dry out. Walls need to be built to meet their specific climate needs. All too o...

Building science for LEED v4 wall design made easy
Concept and design

Building science for LEED v4 wall design made easy - video

...wall, a high performance building envelope developed by the Cold Climate Housing Research Centre in Alaska. REMOTE stands for 'Residential Exterior Membrane Outside-insulation TEchnique' . Edelweiss house LEED Platinum V4 wall assembly detail © Cosella Dorken Remote walls are framed the way you would be used to...

Artistic rendition of one of the pre-fab net zero energy homes, Alberta
Off-grid and Net-Zero Housing

Net Zero Energy Community in Calgary, Alberta

...Wall panels and roof components were pre-made in the company’s manufacturing facility in Edmonton, then shipped to Calgary for assembly. This allows for a more precise build in a controlled environment, less manufacturing waste, and shorter construction time onsite. After taking delivery, completed sections are assembl...

Energy modeling simulation of heat loss through thermal bridging
Efficient home design

What is a thermal bridge and why is it so important to break it?

...walls, unnecessary cripples, redundant studs in corners etc. 2- Avoid metal fasteners of any kind that span the entire wall assembly. 3- Design your basement wall so it is better protected against moisture and water damage . This can allow you to use wood instead of switching to metal as a durability precaution. ...

Better Basement Design on basement walls prevents mold and midlew
Healthy indoor air quality

Basement renovations: How to prevent mold when finishing basements

...wall assembly for a basement application - read on! Rigid insulation board against concrete adds R value, breaks the thermal bridge and raises the temperature of the stud wall, which helps prevent moist air from condensing. The stud wall allows for the installation of wiring, additional insulation and drywall. Dryw...

Poly vapour barriers in air conditioned houses can cause mold and rot
Healthy indoor air quality

Why you should Never Install Air-Con in a Home with a Vapor Barrier

...wall assembly. Moisture-impenetrable vapor barriers work great in winter and, before air conditioning and heavily insulated walls, they were relatively harmless in summer. But as homes are now better insulated and also cooled during hot months, that vapor barrier is on the wrong side of the wall assembly for several ...

Tiny House living in cold climates - one of the best tiny homes on wheels
Tiny house

Tiny Houses - Living in Cold Climates

...wall structure of Ben Hayward's 180 square foot tiny house is his own grid-like design of plywood, and is insulated with mineral wool, a recycled stone dust insulation . The wall thickness and levels of insulation vary slightly, with the weakest point of the wall being R48, which is about double that of your typical ne...

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

...walls, we ended up using a double stud wall assembly. The structure of the house is built with 2x8 lumber, which allowed both for the necessary support on the tall wall of the main floor, as well as to give a deep space for insulation. The bays in this wall were filled with Roxul batt insulation, a mineral wool product...