What is an R value / Guides

Dense-packed cellulose wall insulation
Wall assemblies - new construction

Dense-packed cellulose insulation wall systems

...r risk of moisture damage than some other materials if not handled and installed properly. But this can be said of many components of a home, and rather than di...

Installing foam panel insulation, which is best?
Insulation and soundproofing

Rigid insulation panels: which ones to use for different applications

...ral wool is rated at about R 4, it is unharmed by moisture, it is not a vapour barrier at any thickness, nor is it an air barrier. It also provides better sound...

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

...anaged level of Air Transfer Rate, preferably via an HRV or ERV unit to control the energy losses from essential ventilation . You can read more about Air Perme...

How to Choose between an HRV and ERV system
HRV and ERV

Choosing between an HRV and an ERV

...an HRV and an ERV? How much fresh air is required in homes and the best way to provide it are important issues. Energy recovery from exhaust air is becomi...

heat pumps in tandem with heat pump hot water tanks
Hot water

Increased efficiency with heat pumps working in tandem

...ratio of the first heat pump is transferred to the water heater. And the more 'free' heat you have in winter (solar gains and general occupancy) the more effi...

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

...is to be sure not to trap moisture between two vapor barriers . If a home already has a vapor retarder or vapor barrier, it’s important not to add another vapor...

Finished basements can lead to mold and mildew
Healthy indoor air quality

Why are basements moldy? How to fix or Prevent a Moldy Basement

...and odors. This is consistent with reports from Canada where basements are insulated in a similar manner (Fugler, 2002) and from other researchers in the United...

4th generation blowing agents for spray foam
Insulation and soundproofing

New HFO blowing agents for spray foam will make it over 1,000 times less harmful to the climate

...anetary emergency by exacerbating another. Increased cost, but increased performance: According to Honeywell's global sales manager for fluorinated products...

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

Building science for LEED v4 wall design made easy - video

...is protects our exterior air barrier membrane ( Delta Vent SA ) and prevents any risk of walls warping. The weak points in any air barrier are the penetration...

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

...rmal bridging . The sheathing is used as the air barrier and vapor barrier , by using a high-performance building tape to seal the joints and the Larsen Trusses...

Free Energy Audits, Net Zero Home Grants & Interest Free Home Renovation Loans
Grants and incentives

0% loans & Grants for Green Home Renovations & Construction - A Boost for Canadians in 2020

...an opportunity to try an air barrier spray for sealing air leaks , and we were very impressed with the results. What R value do I need for an attic? With ma...