Visual vs testing for air leakage in IRC ’09
Hello- I am cruising through my (newly fatter) copy of IRC ’09, reviewing the upcoming changes, and this one caught my eye; in Energy Efficiency, Chapter 11 N1184.108.40.206 and N1220.127.116.11. These are the options for inspection to air sealing and insulation. I get a little confused. It looks like a builder can either: 1: do his own blower door test, or hire someone to do one, or 2: have the building inspector do a visual inspection of a fairly stringent nature. In addition, it looks like the inspector can require a 3rd party visual inspection for insulation and air tightness. Hmmm. So, who is buying a blower door or insisting that their insulation contractor have one? I also see that a duct blaster test is REQUIRED unless all ducts are inside the thermal envelope. I applaud these changes, but I am concerned about the compliance methods. What are others’ takes on this?