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Log homes and Massachusetts Energy Code?

IRFL | Posted in Building Code Questions on

I have a client that would like me to do a HERS rating on a new construction log home in Massachusetts. I am concerned that the home may fail the 3.0 ACH50 required for new homes and I understand the IECC 2018 exempts log homes from the standard IECC and requires the home to meet the ICC400 requirement.
The building commissioner has no knowledge of ICC400.
QUESTION: Does that eliminate the requirement for a blower door test to meet 3.0 ACH50?

Any comments on the ICC400?

Thanks

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