double-wall-construction / Green Building & Sustainable Home Renovation Information & Advice

Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope - starting with the perfect wall

What is the best wall system for a home?  We're frequently asked which is the perfect wall system for high-performance LEED, Passive House or Zero Energy Homes, Well, a perfect Answer to that Is, first Ask the Right Questions! - After all, what is the best way to get from one place to another?  You have to choose betwe...

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

The following is a firsthand account of a building project by Craig Anderson and his wife France-Pascale Ménard who bought a large piece of land in West Quebec overlooking the Gatineau River and explored the potential options for creating an off-grid passively heated home. This is the first of many posts that will foll...

Gabion walls can be used for building homes
Concrete and masonry

Gabion Walls - what is a gabion cage & how to build with them?

Gabion walls are retaining walls built by stacking stone in a gabion cage or gabion basket that can serve many purposes but are most often used to create tiered or leveled ground in gardens.  They are rectangular baskets of metallic lattice filled with stones and their origin dates back to war times when they were erec...

Living green wall
Healthy indoor air quality

Living walls: what they do and don't do

It is well-documented that indoor air is filled with contaminants, mostly due to cooking (specifically burning) and improperly vented combustion appliances (woodstoves, gas water heaters, gas ranges, etc.). Following that would be formaldehyde, VOCs and other chemicals in building materials and furnishings. All these f...

Yukon's first LEED certified home
LEED Homes

The Yukon's First LEED Certified Home

The Yukon's first LEED certified home was born of new city policies designed to develop people-friendly neighbourhoods. Unused city land between large lots was re-zoned to allow for new housing that promoted community engagement. New zoning regulations for these more modestly sized lots included maximum setbacks to kee...

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

With their house about three kilometers from the nearest paved road and hydro pole, so truly off-grid, Craig Anderson and  France-Pascale Ménard had no option but to go for extreme efficiency in design, product selection and construction. Craig and France-Pascale went for LEED certification through the CaGBC, and this ...

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

Larson truss wall systems for new green home building & renovations for max wall insulation A Larsen Truss is a type of lightweight & non structural 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...

Installing Siding Correctly
Exterior cladding

How to install siding

Siding installation The walls of your home are an environmental separator. Their job is to keep the inside in and the outside out. Exterior cladding or siding is your first line of defense against weather elements, and its job is to allow interior control layers (ie. the building envelope) to do their jobs without bei...

Wall assemblies - new construction

Wood framing

All framing materials for the Demo House are FSC certified, and provided by our sponsor Kott Lumber. Kott engineered the plans for us , supplying detailed framing documents including a cut list for each framing member. We were also provided with a wood order to match, along with pre-cut lengths whenever possible. This ...

Dense-packed cellulose wall insulation
Wall assemblies - new construction

Dense-packed cellulose insulation wall systems

Dense-packed cellulose insulation - the History In 2005, Metric Homes of Carp, Ontario designed and built Canada's first Energy Star labelled home in Canada. This home was built with dense-packed (or dense-blown) cellulose as the wall insulation of choice. Their intent was to produce a better built home with the goal o...

Which wood is best for framing timber frame construction in homes?
Wall assemblies - new construction

Lumber choices for wood frame construction - choosing timber for framing & building homes

Framing lumber choices for building homes Framing lumber, also known as structural wood, is the grade of wood used for house framing (studs, Larsen Trusses for Double-Stud walls, headers, roof trusses and floor joists, etc. as well as in timber frame construction). Its technical characteristics make it perfectly suitab...