Flow through wall assembly / Guides

R values and insulation performance
Efficient home design

Understanding thermal performance

...wall assemblies and insulation products has long been characterized using R-value, a metric which describes thermal resistance. While R-value is useful, it doesn’t tell the whole story about heat flow through building enclosures such as walls and roofs. Recently, a study by RDH Building Engineering Ltd . h as shown 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

...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...

Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope - starting with the perfect wall

...through walls in either direction without preventing them from properly drying. Some materials within a 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...

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 and balconies, service openings (structural thermal bridges), and 'penetration' thermal bridges such as metal I-beams that pass through wall assemblies. Calculating heat flow through building enclosures is much more complex than calculating it through individual materials, particularly when highly conductive co...

How to Vent Roofs - the Methods, Vent Types, Fans
Walls and Roofs

Why Roofs need to be ventilated and how to ventilate a roof properly

...walls? When the snow melts in the spring, do you notice traces of moisture on your ceilings? Is there frost or stains on the insulation or wooden studs in your attic? If you answered yes to any of these questions, you may have insufficient air flow through your attic to remove moisture. Read more here about what ...

Wood frame Triple-glazed, argon-filled windows in the Ecohome Demo House
Windows and doors

Choosing windows - which window frame? wood v aluminum v vinyl

...through, but at night reflects infrared heat back into the room. Low-E coatings slightly reduce the light and heat that will enter through your window, but losses are minor compared to the reduction in heat loss during cold nights. For serious high-performance in windows a second and even third low-E coating can be a...

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?

...wall assembly, in kit form The prefab high-performance walls of this Passive House & LEED ready home kit are made almost exclusively using ecological materials from natural sources: double-stud wood framing, recycled paper (cellulose insulation), and wood fiber insulation panels . Double-framed wall construction ...

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?

...wall assembly, in kit form The prefab high-performance walls of this Passive House & LEED ready home kit are made almost exclusively using ecological materials from natural sources: double-stud wood framing, recycled paper (cellulose insulation), and wood fiber insulation panels . Double-framed wall construction ...

How to Fix a Leaky or Dripping Faucet Easily
Plumbing renos, repairs and maintenance

How to fix a Leaky Faucet for under $1 (and stop that tap dripping !)

...wall told Wall Street Journal recently. So as far as water leaks are concerned, prevention really is better than a cure. Step 2 - taking the faucet apart On some faucets the screw holding the tap top or lever in place is hidden under a cover that has the blue or red color on it to denote hot or cold. This will have...

Installing Siding Correctly
Exterior cladding

How to install siding

...Walls in heating/cooling climates like Canada need to be designed to dry during all seasons, not just winter, which is how we most often build them now. Moisture will always flow from areas of high concentration to low, and the side of the wall those different conditions are on will reverse between seasons due to ins...

Dense-packed cellulose wall insulation
Wall assemblies - new construction

Dense-packed cellulose insulation wall systems

...wall construction on 1200/ft2 of wall you can expect to pay about $1.00/ft2 installed. If you add 1" or more of breathable foam insulation on the outside of the wall you will be looking at a minimum of an R25 exterior wall. A typical wall would be built with the following layers from inside to outside: 1) Drywall, ta...