National guidance
Black Mold: what to know and what to do next
Dark-colored growth is a reason to investigate moisture, but appearance alone cannot identify a mold species or determine toxicity. Treat broad or recurring growth as a building-moisture problem that deserves qualified evaluation.
Signs to look for
- Dark spotting or patches that return after cleaning
- Persistent musty odor
- Past leaks or chronically damp materials
- Growth inside wall, attic or crawl-space areas
Practical next steps
- 1Avoid scraping, sanding or using fans on suspected growth.
- 2Correct an accessible moisture source when safe.
- 3Ask a qualified professional whether inspection or remediation is appropriate.
What professional help may involve
The scope may include moisture investigation, containment, removal or cleaning of affected materials and correction of the moisture condition.
This page explains the problem type nationwide. Local commercial help is available through active market pages when you are ready to request assistance.
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