Building Science Webinar with Dr. Joe Lstiburek: Duct Blaster & Blower Door Testing - What Do These 2 Tests Really Mean?

Building Science Webinar with Dr. Joe Lstiburek: Duct Blaster & Blower Door Testing - What Do These 2 Tests Really Mean?

Monday, November 2, 2020 (1:00 PM - 3:00 PM) (CST)

Description

Instructor: Dr. Joe Lstiburek
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” is 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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Peggy Means
(281) 664-1431
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