What is the most energy efficient wall / Guides

Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope - starting with the perfect wall

...the safest way, the most scenic way or which route has the most gas stations or least amount of hills. So what is the best wall system? That also depends on what you are looking for. What is the most durable wall? What is the most energy efficient wall? What is the most soundproof wall? What is the most afforda...

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

...the heat loss of a home and the greatest risk for moisture damage inside walls. The insulating value of the wall adds up to R48.8 in total, which is about twice that of most provincial building codes. With framing materials factored in, energy modeling shows the effective or 'true' R value of the wall is 36.3. With h...

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

...ishing what climate zone you are building in and how the existing 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. Wall...

Built to ENDURE: the Net Zero Heat Kenogami House
Efficient home design

The Kenogami House: designed to ENDURE

...the total energy consumption of a building, how energy efficient a building is largely depends on the building envelope. It controls heat loss, air leakage and the movement of moisture. What is often omitted from the equation that determines the overall efficiency of a building is the embodied energy of the materials...

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?

...the new BC Energy Step Code in British Columbia, Canada is one example. A blower door test is often an essential part of a home audit, we don’t know for sure just yet if it will be part of the free home energy audits promised by the Canadian Liberal Government in Oct 2019 as part of their as part of their Net Zero Home...

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?

...iscontinuities in the wall structure, you can also quickly deduce that this is not the case. It doesn't take expensive equipment or an engineer to identify a thermal bridge in a home, run your hand along your walls on a really cold day and they will find you. This isn't only an issue of heat loss and the higher bil...

Dense-packed cellulose wall insulation
Wall assemblies - new construction

Dense-packed cellulose insulation wall systems

...the moment you turn on a furnace. The double wall construction will also increase the insulating efficiency by eliminating the thermal bridging heat loss you get in a traditional wall design where the wood studs (only R1 per inch), extend from the outside of the wall to the inside. There's also another option for b...

How to choose Triple pane, high performance windows
Windows and doors

The best tips for buying windows

...the windows in a way that minimizes thermal bridging, which causes heat to be conducted through the wall framing via the window frame. This can be best achieved by centering windows in the wall rather than having them flush to the outside as we most commonly see. Eliminating thermal bridges lowers the risk of condensat...

BC Energy Step Codes - Builder Design Guide &  Requirements explained
Building codes

The new BC energy step code: builder design guide & requirements explained - Vancouver

...The new BC Energy Step Code - The details The BC Energy Step Code is a new provincial standard intended to provide an incremental approach to achieving more energy-efficient buildings that will help the province meet its goal of having all new buildings be Net Zero Energy ready by the year 2032. The City of Vancouver...

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

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

...the health of occupants by mitigating mold formation. They most certainly are not based on the laws of physics,that is the one thing we know for sure. 3) The cheapest way to insulate a basement is on the inside, and using finishing materials that are moisture and therefore mold formation sensitive. This is a big prob...

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.

...the wall, install the air / vapour barrier, then strap the wall on the inside with 2x3's. The problem with this is that 2x3's are the same price as 2x4's, and strapping the wall horizontally is more labour intensive than building a double wall. If the strapping is installed vertically you have a double wall without the...