Q: Should the exit plumbing be pressure-tested for leaks in today’s super-tight houses?

A: Steve Demetrick, a residential builder and remodeling contractor in Wakefield, R.I., responds: The integrity of the waste plumbing is definitely something to be thinking about when you’re building any kind of house, including a super-tight one. We recently completed a new Certified Passive House in Rhode Island, and we made sure that the exit...

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