Air sealing
State what this option assumes, what should change first and what evidence would weaken it.
Compare unwanted air leakage with intended ventilation so that sealing one pathway does not worsen moisture, pressure or combustion safety.
State what this option assumes, what should change first and what evidence would weaken it.
Keep this route available until repeated evidence separates it from the first option.
Compare unwanted air leakage with intended ventilation so that sealing one pathway does not worsen moisture, pressure or combustion safety. This guide compares both routes, defines safe evidence, stop boundaries and the next professional handoff.
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