01
Trace moisture before prescribing roof work
Record weather, indoor humidity, season and the location of staining. Condensation often follows thermal bridges, blocked ventilation or air leakage, while rain entry may track from a flashing or penetration. Both conditions can exist at the same time.
02
Ventilation needs a complete path
Exhaust without adequate intake cannot create balanced flow. Soffit conditions, insulation baffles, roof shape and fire or code requirements affect the design. Complex historic roofs may need professional analysis rather than a generic vent added to the ridge.
03
Air sealing and insulation matter
Warm moist air moving from the occupied space can overwhelm attic ventilation. Mechanical exhaust, ceiling penetrations, access hatches and ductwork should be reviewed along with insulation and vapor-control strategy.