Cup of Joe - Airtightness - How did we get here?

Ancient proverb: To control air, you must enclose air. Brilliant!
Why do we prefer air-control layer instead of air barrier?
How did we come to define airtightness?
Why do we call them blower door tests?
Why do we depressurize? Why did we choose 50 Pascals?
Find out the answers here. If you are so excited to learn this stuff, you just can't stand it, consider signing up for one of our seminars today!
www.buildingsc...

[@billbrown3459]

"... I didn't have a Fan BIG Enough to do 100 pascals !" ... LOVE it ! ... In goes the GOOD Air - Out goes the BAD Air ! ... enough said !

[@PaulyDownUnder]

Love the history of how these standards come about, very entertaining. The fact that things got done back then even though there was no real science to it is amazing in itself. That would never fly these days though, 10s or 100s of millions would have to be spent on tests and trials that would take years or decade to complete resulting in 1000 page documents being written that no one would read or understand. How times have changed!

[@paulbooij7594]

show should be called :Confessions from an engineer.

[@jakeanator2004]

You need to talk to Matt Risinger to help improve your audio!

[@NeoKnight9]

Lol they can swap improved audio for improved content