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Blower door testing on New residential homes and commercial buildings. We also offer testing on existing homes to find areas of air leakage.

Is it required?  Per R402.4.1.2, this test is required to be done on every new construction home, additions over 500 sf and all multi family buildings. As of July 1st 2016 the standard has been set to 5 or less ACH @ 50 pascals (ACH= air changes per hour). All projects must meet this standard.

Washington Code R402.4.1.2

The building or dwelling unit shall be tested and verified as having an air leakage rate of not exceeding 5 air changes per hour. Testing shall be conducted with a blower door at a pressure of 0.2 inches w.g. (50 pascals). Where required by the code official, testing shall be conducted by an approval third party. A written report of the results of the test shall be signed by the party conducting the test and provided to the code official. Testing shall be performed at any time after creation of all penetrations of the building thermal envelope. Once visual inspection has confirmed sealing (see table R402.4.1.1), operable windows and doors manufactured by small business shall be permitted to be sealed off at the frame prior to test.

We want to try to  ensure you are able to pass your blower door test on your first try. 


We offer consultations during construction to help make sure you have good airtightness during framing this will in return help you pass your blower door/air leakage test. 


We understand the importance of our customers time & the need of getting your blower door and duct testing sign off. That is why we will be there when we say & why we also offer nights and weekend appointments upon request.  We always do our best to work with all of our clients and their schedules, so if you are needing a test done in a rush please give us a call and we will do our best to accommodate your schedule.

Door Blower Test, Air leakage testing, Blower Door Testing & Duct Testing

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