1980s house

Increasing insulation and air control changed condensation and ventilation behavior.

House DNA matters

Do not apply a modern wall assumption to a traditional assembly or vice versa. Record structure, foundation, ventilation and major retrofit history.

Typical investigation approach

Start with original construction, then map later windows, insulation, services and extensions that may have changed drying or airflow.

Use this profile

Filter symptoms and guides by period and construction so the most plausible pathways appear first.