No wise cracks on the word Penetrations.
I thought of a few myself.
If you can’t help yourself then go ahead.
Tough new energy codes will soon force even reluctant builders to pay more attention to air-sealing. The 2012 International Energy Conservation Code (IECC) requires blower-door testing and a visual inspection to ensure that a home is as airtight as possible. In addition, air-sealing requirements have gotten much stricter: In climate zones 1 and 2 (hot and humid zones), a house needs to reach a 5 ACH50 threshold, down from 7 ACH50. In all other climate zones, homes need to reach 3 ACH50. So far, five states have adopted the 2012 IECC or an equivalent energy code: It’s law in Maryland and Illinois, and it becomes effective in California, Washington, and Massachusetts in 2014. At least 16 additional states will adopt the 2012 IECC or an equivalent by the end of 2015, according to a recent article in the Journal of Light Construction.
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