Post-Remediation Mold Clearance Testing in Nampa, ID
You paid for mold removal. Clearance testing tells you whether it worked before the plastic comes down and the drywall goes back up, from someone who didn't do the work and has nothing to defend.
Reviewed by the Nampa Mold Experts inspection teamUpdated How we write and check these pages
What is mold clearance testing?
Clearance testing, also called post-remediation verification, is an independent check that a mold remediation job reached its goal: the mold-damaged materials are gone, the area is clean and dry, and the air in the work area isn't carrying elevated mold spores.
It happens after the remediation contractor finishes cleaning but before containment is removed and before any rebuild. If something was missed, that's the cheapest moment to fix it.
Why not let the remediation company test its own work?
Because it's grading its own homework. Industry guidance such as IICRC S520 describes post-remediation evaluation, and the common recommendation is that it be done by someone independent of the remediator. That's the only kind of clearance we do. Our testing-only pledge
What a clearance visit includes
The criteria are agreed in writing before the visit, so nobody moves the goalposts afterward.
Scope review
We read the remediation scope or protocol so we know exactly what was supposed to be removed and cleaned.
Visual check
No visible mold, no remaining damaged materials, no settled dust or debris in the work area.
Moisture check
Framing and materials read dry. If they're still wet, mold can return, so the job isn't done.
Air samples
Samples inside the work area, a comparison area and outdoors, analyzed by an independent accredited lab.
Pass or fail? A clearance passes when the visual and moisture checks are clean and the air samples in the work area look like the comparison and outdoor samples, without elevated water-damage indicator molds. If it fails, the report says why, the contractor re-cleans, and we retest.
When clearance testing matters most
- Before closing on a home where the seller had mold remediated. Ask for the remediation records and an independent clearance.
- Sellers who want documentation to answer the RE-25 disclosure question about past mold repairs.
- Landlords between tenants, or after a tenant complaint was addressed.
- Insurance claims where you want proof the loss was fully addressed.
- Health-sensitive households that need confidence before moving back in.
Mold removal in Nampa often involves crawlspaces (joists, sill plates and the vapor barrier) and attics (roof sheathing). Clearance there means checking that framing was cleaned, the moisture source was fixed and the space now reads dry.
Get the timing right
Book clearance once the remediator says cleaning is done and drying is complete, with containment and air scrubbers still in place. Ask them to stop air scrubbers at least a few hours before our visit so samples reflect normal conditions.
Schedule clearanceClearance testing questions
How much does mold clearance testing cost?
Clearance testing typically runs $200–$500, including the visual and moisture check, air samples, lab fees and a pass/fail letter. Additional samples for large or multiple work areas typically add $50–$150 each.
When should clearance testing happen?
After the remediation contractor finishes cleaning and drying, but before containment is removed and before drywall, insulation or flooring is replaced. Testing after the rebuild makes failures expensive to fix.
What happens if clearance fails?
The report explains what failed: visible residue, wet materials or elevated air samples. The remediation contractor addresses it, usually at no added cost under their contract, and we retest the affected area.
Can you do clearance if someone else did the original inspection?
Yes. We review the original report and remediation scope. If neither exists, we document current conditions and test against a comparison area and the outdoors.
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