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...

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 ...

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

The Difference between air barriers and vapour 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...

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

Balancing air pressure in a house: "Your house sucks." "Oh yeah? your house blows!"

...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...

Vapor retarder latex primer instead of polyethylene sheet
Air and vapour barriers

Replacing polyethylene vapour barriers with latex paint vapor control

...air barrier is to control air leakage. 6 mil poly can work effectively as an air barrier if it is carefully sealed, but so can other materials. Well-sealed dr...

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...

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...

Ice dam
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...

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...

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...