Well I’ll let your imagination work on that one – and now that I have your attention…

Conscientious designers and contractors tend to be more familiar with qualitative testing as a means to determine if an air barrier is continuous and visually leak-free. However, it is the air leak that is not visual that is important. Demonstrating and validating air barrier performance by using quantitative methods in order to comply with new codes and standards is new and less familiar to designers and contractors. The difficulty for them is in understanding what the numbers mean, interpreting different results, and tightening the performance of what they can’t see. They know how to design and build a successful building using tried and true methods, but when mandated to use new products or methods to achieve high performance or accreditation, they have no track record or field studies to fall back on.