How Much Air Leakage Is Too Much?

Air leakage occurs when outside air enters and conditioned air leaves your home uncontrollably through cracks and openings.

Air Sealing Trouble Spots

Old school thinking was that air leakage was a good and natural source of ventilation. However, we’ve learned that’s just not the case.

During cold or windy weather, too much cold air may enter the house. In many older homes 20% of the overall energy consumption is due to air leakage. Also, when it’s warmer and less windy, not enough warm air may enter which can result in poor indoor air quality. And in hot and moist southern climates, air leakage can allow the outside humidity to enter the home, making your indoor environment uncomfortably humid as well.

So with a new home – how much air leakage is too much? Conventional wisdom nowadays says the more “airtight” the home, the better. Your new home simply cannot be built “too tight”. Your energy bills will be lower and your family will also be healthier and more comfortable because sealing cracks and openings will reduce drafts and cold spots, or minimize humidity,  thereby improving comfort.

A home’s air leakage is measured by a Blower Door test which measures the # of air changes per hour of your home when it’s been pressurized to 50 pascals (“ACH @ 50”).

Blower Door Testing

So what’s a good air leakage target to aim for? Conventional wisdom and the new 2012 International Energy Conservation Code says 3.0 ACH@50 (three air changes per hour) is a realistic and meaningful air leakage target to shoot for in today’s world.

So all this means you should take real care to select and build the right building envelope, install a proper air barrier and seal everything up correctly with caulking and weather stripping.

And a word to the wise – homes built with Logix ICF are easy to build super-tight because a Logix wall by its very nature and design has no gaps or cracks and functions as an air barrier and a vapor barrier.

Air tightness is like good, strong bones – you can’t see it but you feel it for life!


Video: Logix ICF Stars In The Highest Rated TV Series (EVER!) On HGTV Canada (soon to air in the USA).

Bryan Baeumler, star of the hit HGTV franchise House Of Bryan, selected Logix Platinum Series for the construction of his new home which was chronicled in the 16 episode series House Of Bryan 3 – “In The Sticks” . “HOB3” aired this winter and garnered the highest ratings ever for a series on HGTV Canada.

Click here to watch the Logix highlights video.

Click here to watch all the HOB3 episodes online (Canadian viewers only).

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House Of Bryan 3 will debut on the USA HGTV and DIY networks later in the year!



In Remembrance Of Thomas Charles Smerchanski

March 6, 2015.

With great sadness, the Logix organization announces the passing of Thomas Charles Smerchanski after a long and courageous battle with cancer.

Tom was the President and owner of AMC Foam Technologies Inc. and one of the owners and original founders of Logix Insulated Concrete Forms Ltd.

Passionate, loyal, principled, generous and innovative – these are some words that describe Tom.

Not a man who stood still. Rather, Tom was a calculated risk-taker who always moved forward.

We’ll always remember the Tom who made our Logix meetings so enjoyable and productive – as much full of laughter and goodwill as they were of thoughtful discussion and passionate debate.

Tom is survived by his wife Darlene and blended family of four adult children – Justin, Lauren, Benjamin and Emily, and an Irish Setter named Grace Kelly.

Tom’s handpicked management group will work with the talented and dedicated team at AMC to continue Tom’s mission of excellence.

Tom – you challenged us, inspired us and kept us smiling. We’ll miss you and we will not forget you.


Your friends, partners and associates at Logix ICF.