WRB / Guides

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?

...WRB) you install next, and those range from about 5 or 6 perms to up around 60 perms. Here is an example of that, assuming the 2 perm rating: 2 perm 7/16 OSB sheathing with a 30 perm WRB results in 1.88 perms 2 perm 7/16 OSB sheathing with a 5 perm WRB results in 1.43 perms That may not seem like a lot, but...

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

...WRB) Strapping Exterior cladding * Both homes are built on a raft-slab ‘ slab on grade ICF Forming kit ’ with 12 inches of EPS foam insulation John Hodges' Passive House with Larsen Trusses © Ecohome Exterior insulation for home renovations: Beyond new home construction, using the Larsen Truss wall De...

Blower Door Tests - What's the Cost & Who Does Them?
Air and vapour barriers

What is a blower door test? What's the cost? How do you find a company to do one?

...WRBs) , tapes and caulking etc, so the cost doesn’t really go up much. All you need to do to improve the air seal is take your time and be a bit more careful, and what’s the point of taping the joints of a membrane if you don’t do it well and it still leaks air? Buying better quality building tapes is also a very good ...

Prefab LEED Passive House Kit Homes the Future of House Building?
Passive House

Prefab Passive House & LEED ready kit homes - the future of home building?

...WRB membranes (Weather Resistive Barriers) protecting the wall from the elements. Insulation levels are almost twice the standards required under Part 11 of the Quebec Building Code Wood fiber insulation boards on the exterior as a continuous insulation layer Chosen High-Performance Wall Brands : Dörken Delta...

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?

...WRB membranes (Weather Resistive Barriers) protecting the wall from the elements. Insulation levels are almost twice the standards required under Part 11 of the Quebec Building Code Wood fiber insulation boards on the exterior as a continuous insulation layer Chosen High-Performance Wall Brands : Dörken Delta...

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

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

A technical guide to understanding the role weather barriers and rainscreens play in a wall, choosing the right products and installation tips for optimum performance. They're officially known as water-resistive barriers or WRBs, sometimes weather-resistive barriers, but in practical terms they are more commonly cal...