Share 'Building Airflow Standards and the Average Contractor'

Im running into some common issues in NYS that seem to keep coming up, and I am looking for feedback from others.  It is often noticed in my travels that a contractor will identify a target CFM50, and then work only to achieve that goal.   BPI's thoughts are,"Get them as tight as possible, fiqure out what amount of air needs to be made up, and provide make up air for that."   Are contractors afra…