Heat and moisture move together
Understand conduction, convection, air leakage, vapor movement, relative humidity, and condensation.
Attic and crawlspace clues
Look for bypasses, staining, corrosion, inadequate ventilation, exposed facing, missing insulation, and ground moisture.
Mechanical exhaust
Confirm bath, kitchen, and dryer exhausts terminate appropriately and do not create moisture or fire hazards.
Common exam traps
- Confusing ventilation with air sealing
- Ignoring a dryer vent in the attic
- Guaranteeing mold species
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