What is post-remediation verification?
How independent clearance testing works after a mold cleanup, what passing looks like, and why it matters for buyers and insurers.
Post-remediation verification, often called clearance testing, is an independent check after a mold cleanup to confirm the job worked. It's done after the remediation company finishes, and before walls, floors and finishes are put back.
What gets checked
- Visual: no visible mold, dust or debris in the work area or containment.
- Moisture: the materials that were wet are now dry, and the source of water has been corrected.
- Air: samples inside the work area are compared to an outdoor control. Spore counts and types should be similar to outdoor air.
- Surface, if needed: tape or swab samples on cleaned surfaces.
Why it should be independent
When the company that did the remediation also tests its own work, there's an obvious conflict of interest. Independent verification gives homeowners, buyers, landlords and insurers a result they can trust, and it gives good remediation companies proof that they did the job right.
What happens if it fails
A failed clearance usually means more cleaning, more drying, or a missed area. The report shows which samples were out of line, the remediator addresses it, and the area is retested.
When to schedule it
Ask your remediation contractor to schedule clearance as the last step of their work, while containment is still in place. Once new drywall is up, it's too late to verify what's behind it.
We provide independent post-remediation clearance testing across Upstate SC.
Common questions
Who should do post-remediation verification?
What does passing clearance mean?
Find out what's in your air.
Tell us what's going on and we'll recommend the right test. Most appointments are scheduled within a few days, and lab results come back in 2 to 3 business days.