Infiltration
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World’s Tightest House Is On the Market
The Dillingham, Alaska, home goes up for sale as its owners prepare for a move
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An Easy Retrofit for Return Air
For homes without dedicated return grilles in the bedrooms, this easy-to-install device provides a return air pathway
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Complex Three-Dimensional Air Flow Networks
That’s what most buildings are or want to be
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Air Leakage Through Spray Polyurethane Foam
How thick does a layer of spray foam insulation has to be to qualify as an air barrier?
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An Interview with Building Science Pioneer Terry Brennan
Stories from the early days of building science and more
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Air Leaks From Your Home To Your Attic Need To Be Sealed
If your house has an attic, there needs to be an air barrier that keeps the attic space separate from the rest of the building
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The Top Two Reasons Powered Attic Ventilators Are a Waste of Money
Despite how fervently some people believe in them, powered attic ventilators don’t pass building science muster
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Fixing a Leaky Log Home
Rustic and charming as they may be, log homes pose unique challenges for air sealing and insulation
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The Mixed-Up IAQ and Infiltration Limit Blues
The ventilation wars inspired this song by Eric Werling
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An Interview with Dr. Joseph Lstiburek
Joe explains BSC’s new ventilation standard, why tracer gas is a better measure of infiltration than blower doors, and his plans for a ventilation standard for existing homes