Double wall construction / Guides

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

...double-stud wall assembly that allows for thicker insulation, is ideal for dense-packed cellulose insulation wall systems and a very high R-value building envelope without many of the problems associated with double-stud wall construction. Not only is it a great wall system for new green home building incorporating a d...

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...

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

...double exterior 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...

Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope - starting with the perfect wall

...wall is nicely sandwiched about 1/3 of the way through the wall, exactly where it should be. This type of construction is highly praised by building scientists as being among the most durable. Alternative wall construction methods: There are many other methods of wall construction, what we have covered here are the...

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 quite unpleasant, rendering part of your home somewhat unusable at times. Wood, metal and concrete in exterior walls act as thermal bridges, conducting far more heat than the insulation on either side of them. But with most types of wall assemblies we have little choice but to use some kind of heat conducting m...

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

Building science for LEED v4 wall design made easy - video

...Wall Design: Building Science The wall we designed for the Edelweiss house, Canada's first LEED Platinum V4 Home is best categorized as a 'REMOTE' wall, a high performance building envelope developed by the Cold Climate Housing Research Centre in Alaska. REMOTE stands for 'Residential Exterior Membrane Outside-in...

How to Build With Less Wood for Best Performance
Wood and organic materials

How to build high performance homes with less lumber

...double what code would require in many cases, and it's also a smarter long term investment in colder climates. Legalett ThermalWall rigid foam insulation panels This wall assembly doesn’t need an interior poly vapor barrier as the foam will be the vapor barrier. Double stud dense packed cellulose walls Cell...

Multi Unit Passive House design Vancouver Island BC
Passive House

The North Park Passive House on Vancouver Island, BC

...double drywall on the ceilings. Cast iron drain pipes were used to minimize the sound of drain water. Double-stud party walls acoustically separate the suites, and “Quiet Rock” drywall in stairwells reduces noise transfer in those locations. Project credits Architect HCMA Architecture + Design Construction Bern...

Tiny House living in cold climates - one of the best tiny homes on wheels
Tiny house

Tiny Houses - Living in Cold Climates

...wall structure of Ben Hayward's 180 square foot tiny house is his own grid-like design of plywood, and is insulated with mineral wool, a recycled stone dust insulation . The wall thickness and levels of insulation vary slightly, with the weakest point of the wall being R48, which is about double that of your typical ne...

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

...Double wall construction © Bala Structures On the inside of this 2x8 wall is the polyethylene air/vapour barrier. Inside of that is a 2x4 utility wall, holding all of the electrical, plumbing, and data cabling. This wall is also insulated with Roxul batts. Finally, a standard layer of sheetrock covers the interior ...

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

...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. Walls need to be built to meet their specific climate needs. All too o...