Blower Door Testing | Retrotec

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ESDS Version 3.0 for WA State

The Washington State Department of Commerce has released, " Evergreen Sustainable Development Standard Version 3.0 ." Below are notes as related to residential airtightness testing:

Section 5.11: Airchange on rehab gets 3 pts for 7 ACH and 7 pts for 5 ACH. This could be difficult in some types of houses. Key step, is to find all the attic leaks around plumbing stack vents and...

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