Guides
Mold Clearance Testing: What to Expect
Short answer: a clearance test is done after mold remediation and before walls are closed, to confirm the area is back to normal. It should be done by an independent third party — not the company that did the remediation.
When it happens
After the moldy materials are removed, the area is cleaned and dried, and before drywall and cabinets go back in.
What the tester checks
- A visual inspection of the cleaned area
- Moisture readings to confirm materials are dry
- Air and/or surface samples sent to a lab, compared with outdoor or unaffected areas
What if it fails?
The area is cleaned again and re-tested. It's common for a first test to show elevated spores. That's why rebuilding should wait for a passing result — see our Mira Mesa kitchen project, where the area passed on re-test.
FAQ
Frequently Asked Questions
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Why shouldn't the remediation company test its own work?
An independent lab has no interest in passing the job, so the result is unbiased.
Is clearance testing always required?
Not always, but it's strongly recommended for larger jobs, for health-sensitive households, and when a landlord, buyer or city inspector needs proof the work is complete.
This guide is general information, not legal or insurance advice. Your policy and your adjuster decide coverage.
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