Dr. Joe Lstiburek is the #1 authority on building science and is known for diagnosing what ails modern homes.A two-hour look at the two tests required for residential construction per the IRC (and IECC).A Duct Blaster is really cool but do we really need it? If it’s in conditioned space should I strive for leaky duct work? If I stick my ducts in hot / humid attics how tight is tight and is it really possible? Why doesn’t the code book have a maximum amount of leakage allowed when using the Performance Compliance Path? What are the keys to passing this test?Blower Door Testing is a nice idea but what is it really telling me? What part of the year is it when I can expect a 20 mph wind to blow on all 4 exterior walls and the roof all at the same time? Does that really happen? Explain this test and how it works. 5 ACH or 3 ACH: What are the pros and cons of these 2 numbers and where did these come from? Sure this is what the code book guys come up with but how does a house really work under “Normal” conditions? If I have a 4 ACH house will it really lose 4 times the house volume every hour? So is “0 ACH” the best can I get there? What are some of the unintended consequences you have seen from tight homes in hot / humid climates? Can we fix those things?
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