How to incentivize a builder for careful air sealing?
So we haven’t hired the builder of our future house yet, and are trying to figure out how to ensure that air sealing is a priority for the builder as well as for us. Certainly, we will specify what we can, and will choose someone with a good reputation and an apparent commitment to quality work. Still, the best plans depend on execution, and not everyone thinks of 4 ACH 50 as a bad score. It seems that 2 ACH 50 should be a good result and reasonably achievable, but how do I get a builder to really try to achieve it?
Having a test done at least once during construction, before walls are drywalled, sounds like a no-brainer (the air barrier is supposed to be at the exterior sheathing layer). But what should our expectations be at that point?
What about a blower door bonus at completion? How much of a bonus?
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