Air leakage / Guides

Exterior air barrier membrane © Ecohome
Air and vapour barriers

How to install an air barrier for reduced air leakage

...air barrier is to stop air leakage through differences in air pressure between inside and out. A wall system should have one vapour barrier, but can have many a...

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...

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 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 yo...

Blower Door Tests - What's the Cost & Who Does Them?
Air and vapour barriers

What is a blower door test? What's the cost? How do you find a company to do one?

...air leakage rate of about 3 air changes per hour. Some building rating systems set ACH targets that must be achieved. The Passive House air leakage rate has to ...

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 en...

Interior sheathing as air & vapor barriers in wood frame construction
Air and vapour barriers

Interior sheathing as an air and vapour or vapor barrier

...air leakage is measured. The average home built to code using conventional building practices is expected to have air leakage rates of 3.5 ACH, which under no...

Frost in Attics: What causes Attic Ice? How to Fix it?
Roof assemblies - renovation

Why is there frost in my attic? Is ice in roofs a problem & How do I stop it?

...air flow - in a roof keeps it in good dry and sound condition, so make sure there are air baffles on the roof deck so that air can pass through from the soffit,...

Correctly installed Triple pane south facing windows on Ecohome's Demo House
Windows and doors

Installing doors & windows for the best performance in high efficiency homes, LEED & Passive House

...air leakage in homes as well as to save energy. Water leaks from around windows and doors are the visible result of a poor fitting or sealing job, but that's fa...

Ice dams on roofs & how to fix them
Roof assemblies - renovation

What causes ice dams and how to fix them

...Air leakage through walls : through ceilings is another common problem as a lot of heat is transported by air. This warms the attic and causes that same melting...

The difference between air barriers and vapour barriers
Air and vapour barriers

The Difference between air barriers and vapor barriers

...air barrier is to stop air leakage through differences in air pressure. A wall system should have one vapor barrier, but can have many air barriers. A vapor bar...

Thermal image showing where home heat loss is occurring.
Insulation and soundproofing

How insulation works

...air leakage, heat loss occurs in two ways : 1 - As warm air leaks out it is replaced with cold air, and 2 - if you think of the 'wind chill' effect, a drafty ...