NC Code Testing is Here!
-The 2012 North Carolina Residential Building Code is now requiring builders to have mandatory Duct Pressurization and Blower Door Building Envelope Testing: 2012 Energy Code
Blower door test
Builders are now required to demonstrate a Blower Door Test verifying 5 ACH (Air-Changes-per-Hour) or less and a Total Duct Leakage Test of 6% Leakage or less.
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