Air leak / Guides

Skylights can be problematic in a high performance home
Windows and doors

Are skylights an asset or a liability?

...leak, and those that are going to leak . This is not a true statement, but it is one that is derived from a truth of sorts. No, not every skylight will leak, bu...

Frost in attic
Roof assemblies - renovation

Why is there frost in my attic?

...air barriers: Lastly, you should try to deal with any air leakage. Electrical fixtures are notoriously leaky (and this may be better left to electricians) but...

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

What is an air barrier?

...leakage of air. 3. Rigid: supported in both directions from wind pressure. 4. Durable: must last the life of the building. 5. Repairable: access for repai...

Geothermal Heating Systems
Heat pumps, geothermal and AC

Geothermal heating for Homes in North America - Does it work & will it save money?

...air conditioning, only heat is not simply ejected into the outside air, but rather deposited deep in the ground for future use. The result is guilt-free air con...

Mixed interior room lighting

Home lighting design

...leak, and the ones that are GOING to leak. While not completely accurate, there is some truth to it. While there are many that leak, oftentimes there is a pro...

When should you replace windows
Windows and doors

When should you replace old windows?

...air leaks, so having airtight windows may be only a tube of caulking away. The first step would be determining from where exactly air is leaking. Keep in mind...

Air-heated radiant concrete floor
Delivery: radiant, forced-air and decentralized

Air-heated radiant floors

...air ducted system, where air from the home was circulated through heat vents and cold air returns. Circulating air from the home though these floor ducts led ...

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

Ventilation & air exchangers

...air rises, forcing air out the top portion of your home and drawing in cold air from the bottom to replace it. How much air will be changed depends on how well-...

Insulating crawlspaces as part of home renovation
Crawl spaces

How to insulate crawlspaces properly as part of renovating an older home

...air barrier, but EPS and mineral wool are not. Air doesn’t leak through intact concrete but it is quite likely that crawlspace walls will leak air. If you have ...

Installing Siding Correctly
Exterior cladding

How to install siding

...Air spaces behind siding allows water to drain and moisture to escape. © Ecohome How much of an air space is needed behind cladding? The air space b...

How to Choose between an HRV and ERV system

Choosing between an HRV and an ERV

...air leakage only, the quality of the air coming in through the envelope should also be under scrutiny since the envelope itself is serving as the air filter, wh...