Rigid board insulation / Guides

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

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

...rigid insulation panels and a 2x4 wall with batt insulation can be a much more affordable option - but you need to know the right techniques for a succesful and mold-free wall assembly for a basement application - read on! Rigid insulation board against concrete adds R value, breaks the thermal bridge and raises the ...

Dense-packed cellulose wall insulation
Wall assemblies - new construction

Dense-packed cellulose insulation wall systems

...insulation can be a superior product to commonly used batt insulation, but somehow it has developed a bad reputation in Canada. Cellulose Fibre Insulation (CFI) is like the Rodney Dangerfield of insulations, it "can't get no respect". When done right, dense-packed cellulose is a highly efficient option for insulating...

Basement Design for walls prevents mold & midlew when renovating & finishing
Healthy indoor air quality

Basement renovations: How to prevent mold when finishing basements

...rigid insulation panels and a 2x4 wall with batt insulation can be a much more affordable option - but you need to know the right techniques for a succesful and mold-free wall assembly for a basement application - read on! Rigid insulation board against concrete adds R value, breaks the thermal bridge and raises the ...

Air barriers are essential to a properly functioning wall system
Air and vapour barriers

What is an air barrier?

...board (drywall) is a very effective air barrier, so long as the joints are sealed with drywall compound and tape; and all junctions at the floor, roof and openings are sealed with gaskets and appropriate sealants. Breathable insulated structural sheathing: Worth noting first - as a material, OSB (oriented strand bo...

MDF Formaldehyde Free Alternatives - Made from Rice Stalks
Healthy indoor air quality

The formaldehyde-free MDF non-toxic alternative made of natural rice-stalks

...rigid board panels and plant-based rigid foam panels. But rice, which ranks second in terms of grain production worldwide, offers a great opportunity to make use of agricultural waste materials that are currently an ecological burden. So, the completion of a manufacturing facility such as the California company named...

Poly vapour barriers in air conditioned houses can cause mold and rot
Healthy indoor air quality

Why you should Never Install Air-Con in a Home with a Vapor Barrier

...Board lumber > plywood > OSB > hardboard > particle board > paper. Particle board image via Wikimedia To build the structures of our houses today, we often use engineered wood products that have been chewed into tiny bite-sized morsels and that are held together with some tasty glues, which can be softened u...

Slab-on-grade for Ecohome's upcoming video building guide
Slab on Grade

how to build a slab-on-grade on standard soil

...insulation After all the plumbing was in place, 8 inches of rigid insulation was installed - Rockwool underneath the slab and on the vertical exterior surface, and 8 inches of EPS under the footings. Comfortboard is great to work with, it cuts very easily and stays securely in place without slipping, allowing...

Choosing a building envelope
Wall assemblies - new construction

Choosing a building envelope - starting with the perfect wall

...insulation to the exterior. Mineral wool batts have higher R value than fiberglass, and they are much easier to cut and install properly. To discover the appropriate use of insulation, see our guide to insulation, here . Prefab homes: Prefab home construction image via Wikimedia In years past Pre-fab homes ...

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

...Board, which is the same material as Roxul batts but in the form of a rigid board. By wrapping all the walls in mineral wool, it prevents thermal bridging, where heat would otherwise pass through the wood framing (which is a poor insulator compared to the insulation it holds in place). Finally, the exterior has a hou...

Tyvek home wrap left exposed to wind and UV rays
Air and vapour barriers

Choosing the right house wrap / weather barrier, which is best?

...rigid board insulation on the exterior, that as well will have a vapour permeability rating that should be considered. As an example, 2 inches of Roxul ComfortBoard is rated between 30 and 40 perms, compared to 2 inches of EPS foam which is about 1 perm, and 2 inches of XPS foam is only about .5 perms. Meaning, by putt...

Choosing between OSB or Plywood for house sheathing for Roofs, Walls & Floors.
Wood and organic materials

Which is better, OSB or Plywood for Roofs, Walls & Floors?

...rigid insulation with membranes attached, or sheathing with foam insulation attached, as seen in the image above of the corner of a house under construction. It doesn't appear such products conform with the requirements laid out in section 9.25.2.1 of the Building Code, which says that 20% of the total insulation sho...