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Seal a gap or improve ventilation?

Compare unwanted air leakage with intended ventilation so that sealing one pathway does not worsen moisture, pressure or combustion safety.

1 deep guide3 connected questions
OPTION A

Air sealing

State what this option assumes, what should change first and what evidence would weaken it.

COMPAREONE VARIABLE
AT A TIME
OPTION B

Ventilation correction

Keep this route available until repeated evidence separates it from the first option.

THE EVIDENCE ROUTE

Read. Compare. Choose the smallest safe move.

Decision comparison

Seal a gap or improve ventilation? — an evidence-first decision map

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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