Interior sheathing / Guides

Interior sheathing as air & vapor barriers in wood frame construction
Air and vapour barriers

Interior sheathing as an air and vapour or vapor barrier

...sheathing can be one of the better vapour barriers for home construction in most of Canada. But in order to act in that role, it needs to be on the inside. Sh...

Choosing between OSB or Plywood for house sheathing for Roofs, Walls & Floors.
Wood and organic materials

Which is better, OSB or Plywood for Roofs, Walls & Floors?

...sheathing . When you count sub-floors, roofs and wall sheathing, OSB claims about 70% of the wood sheathing market in North America over plywood. Both products ...

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

...sheathing, then I-joists (TGIs) attached to the exterior of the sheathing to allow for seamless insulation with no thermal bridging . The sheathing is used as t...

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

...sheathing; house wrap; strapping; cement board siding. The ceiling is a mix of Roxul mineral wool batts and cellulose totalling R80, the basement is a...

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

Building science for LEED v4 wall design made easy - video

...sheathing; the difference is that vapour and air control layers are moved to the exterior of the sheathing, then additional insulation is installed outside of t...

Installing Siding Correctly
Exterior cladding

How to install siding

...interior control layers (ie. the building envelope) to do their jobs without being assaulted by wind, precipitation and UV rays. Walls in heating/cooling clim...

The difference between air barriers and vapour barriers
Air and vapour barriers

The Difference between air barriers and vapor barriers

...interior sheathing with OSB as an air & vapor barrier for homes , exterior air barrier membranes , how to choose and install WRBs (weather resistant barriers) ,...

Correctly installed Triple pane south facing windows on Ecohome's Demo House
Windows and doors

Installing doors & windows for the best performance in high efficiency homes, LEED & Passive House

...sheathing. They are necessary to allow a bottom space for insulation. But they are only necessary during installation - once windows are screwed in place, they ...

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

...sheathing. Beneath the sheathing are manufactured trusses with 3' of depth built in for insulation. Into this space a layer of 3.5" Roxul batt insulation was la...

Tyvek home wrap left exposed to wind and UV rays
Air and vapour barriers

Choosing the right house wrap / weather barrier, which is best?

...sheathing, housewrap, strapping and siding. Other options for wall assemblies can be found in our building guide . Just like a canvas or nylon tent, water wil...

Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope - starting with the perfect wall

...sheathing, then I-joists (TGIs) attached to the exterior of the sheathing to allow for seamless insulation with no thermal bridging . The sheathing is used as t...