A water stain on a ceiling should never be ignored—even if the water damage has dried out. It could indicate a larger problem, such as faulty plumbing or a failing roof. Worse, water stains can ...

Inspect damaged materials for mold and mildew. Mold can start to grow in the right conditions in as little as 24 hours. For long-term issues, like mold caused by attic condensation, the mold may have ...