Attic ventilation
State what this option assumes, what should change first and what evidence would weaken it.
← All decision comparisonsDECISION COMPARISON
More attic ventilation or better air sealing?
Compare indoor air leakage, insulation disturbance, exhaust termination, roof geometry and outdoor ventilation before adding vents.
1 deep guide3 connected questions
COMPAREONE VARIABLE
AT A TIME
AT A TIME
Ceiling air sealing
Keep this route available until repeated evidence separates it from the first option.
THE EVIDENCE ROUTE
Read. Compare. Choose the smallest safe move.
Decision comparisonMore attic ventilation or better air sealing? — an evidence-first decision map
Compare indoor air leakage, insulation disturbance, exhaust termination, roof geometry and outdoor ventilation before adding vents. This guide compares both routes, defines safe evidence, stop boundaries and the next professional handoff.
Open decision guide →