100 percent pass rate

Since I have been testing, none of the dwellings I have tested have failed the Air leakage test.
Some have been close to their design value of 7 or 8 but others have been well sealed with values of 4 or less. Obviously I have to stick to the standard procedure and can not allow cheating such as gaffer tape. One of the main problems that I encounter is windows and doors Typically a trickle vent is missing - so there is leakage - no I can not stick tape over it! Ill fitting windows and doors are a problem also. So please check all windows and doors before ordering your test.
Sooner or later I will get a leaky dwelling that fails - but I like that 100 percent pass rate! So customers block up those holes. On the whole I suppose that is a good thing because the buildings are performing as they are designed and this proves the dwelling is well constructed, with an air barrier.