Airtight homes / Guides

Problem areas of air leakage in a home and blower door test being cond
Air and vapour barriers

Airtight Construction of Homes is Essential: "Your house sucks." "Oh yeah? your house blows!"

Air Tightness in Houses - All about Balancing Air Pressure in the Home We go on incessantly here about the importance of air barriers in home construction to reduce air leakage , but no matter how hard you worked to make a house airtight, if the pressure isn't balanced you will be sucking air in or forcing it out an...

Condensation on windows leads to mold & mildew in homes, ERV & HRV systems help
Ventilation

Ventilation & air exchangers

...homes, and condensation on windows was common place and hard to stop . This led to a build up of mould and mildew in homes. Modern day airtight homes need mechanical assistance to stop moisture damage and protect indoor air quality, especially true in basements where ventilation is essential to stop mold forming . Th...

$40k Interest-Free Loans for Green Home Renos, How to Apply Canada 2021
Grants and incentives

Greener Homes interest-free loan scheme 2021 Canada - the ultimate guide

...Homes Grant scheme is investing $2.6 billion over 7 years to help up to 700,000 Canadian homeowners across the country improve the energy efficiency of their homes and reduce their energy bills with grants of up to $5,000 to make energy-efficient retrofits to their homes and up to $600 to help with the cost of an EnerG...

Net Zero Homes - Canada's first certified Net Zero House in BC
Green building certifications

The first Net Zero-labelled homes in Canada

...homes, as well as deliver the required training for building significantly more energy efficient homes. Building science training is mandatory for participation in the Canadian Home Builders' Association Net Zero Homes Labelling Program. This training introduces the concept of treating the building as an integrated s...

Wildfire Smoke & How to Keep it Outside Homes
Healthy indoor air quality

How to keep wildfire smoke out of Green Homes with mechanical ventilation systems?

...airtight building envelope Buildings benefit from an airtight envelope, since it allows better control over indoor air quality . Airtightness also improves energy efficiency; indoor air leaks waste cooling power during summer and heating power during winter - which is why using HRV and ERV systems is recommended to r...

Why Electric Heating Systems are Best for Sustainable Homes
Heating with electricity

Heating with Electricity - The Best Choice for High Efficiency & Zero Energy Homes?

...homes. And since these homes have minimal amounts of insulation and high levels or air leakage, occupants are left with almost no affordable option in some cases other than to heat with gas. So, what if homes were built better? What if new homes were so well-insulated and airtight that they use very little heat? Wh...

Leed platinum plaque
Green building certifications

All about green home certification programs & rating systems for USA & Canada

...homes, very poor performance 51 to 65 Older homes that have had upgrades 66 to 74 Homes built to provincial building codes 75 to 79 Energy efficient new homes 8 0 to 90 New homes built for extremely high performance and energy efficiency 91 to 100 Homes that use little or no energy at all Novoclimat (Quebec...

Radon Mitigation - Installing a radon evacuation stack in a slab floor
Radon in Homes - Mitigation

Mitigating radon gas in homes

...homes far more airtight than in previous decades for reasons of durability (condensation in wall assemblies), and also for energy efficiency, as air leakage used to account for about 1/3 the total heat loss of a home. The lack of fresh air leaking in and out when building green homes means radon now collects in homes a...

Preventing radon gas in homes starts with testing for radon - the only sure way
Radon in Homes - Mitigation

Radon Gas Awareness - Up to 10% of North American homes tested have unsafe radon levels

...airtight environment we are exposed to much higher levels than in the drafty homes of the past. In North America, combined figures from the EPA and Health Canada indicate that around 25000 people die directly from accumulative Radon exposure per year - and even more worryingly that in Canada only around 6% of homes hav...

Spray Foam Insulation - Is it Good or Toxic & Dangerous?
Insulation and soundproofing

Is spray foam insulation a good choice for your home? Or a toxic recipe for disaster?

...homes airtight - but from experience spray foam can age poorly, and shrink or separate - in which case it's no longer airtight. The advantages of spray foam insulation When installed properly, spray foam can help make a house airtight (when first applied); it works as a vapor barrier and it adds a significant level...

Pre-fabricated straw bale SIPS panels, an environmental choice
Wall assemblies - new construction

Modern straw bale SIPS construction: high performance, durable, affordable & interesting

...homes that include an impermeable barrier of polyethylene that prevents drying to the interior during our hot, humid summer months, which can cause condensation and hence excessive vapor & mold in the house walls . Straw bale built homes can be beautiful! While loose, dry straw would easily ig...