Our Blower door tests of the residential top floor of a mixed use building reports the findings as Total Airflow through the door seals [m3/h] at a given pressure differential [Pa]. The also calculate Airflow through 1m of joint [m3/(h*m)], which both make sense. But the credit requirement indicates square inches of leakage (per 100sqft of enclosure area.) How do we go from measure airflow at a given pressure to an 'assumed' leakage area? (obviously we can calculate the enclosure area, but I am stumped by this demonstrated leakage area.) Please advise.

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Mark Frey

Senior Consultant

Lemon Consult AG

LEEDuser Basic Member

28 thumbs up

Fri, 09/28/2012 - 09:48

Hi Cory, please check this: http://www.greenbuildingadvisor.com/blogs/dept/musings/blower-door-basics. Further down the page you will find explanations that should answer your question. Comments appreciated.

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