Clearance testing is performed after repairs or remediation has been completed. This is usually due to a plumbing leak, water intrusion or when mold growth has occurred.
Most insurance companies and banks require clearance before payment for the claim is made. The test confirms that the repairs have been completed and all issues have been eliminated.
Home owners have the option of hiring an independent inspection company to perform the testing other than the company that did the work. This assures the area is safe, has been properly cleaned and that compliance has been met.
Windows and doors need to be shut the day before inspection is scheduled and during the inspection.
Hot air ducted heating and cooling system needs to be shut down during inspection.
Mold debris and materials removed.
Air scrubbers off at least 24 hours before inspection.
Plastic containment enclosure should be left intact to ensure it had been properly installed. If clearance test fails to pass, the elevated mold spores that were contained by the enclosure could drift into the surrounding cleaner air and cause new contamination.
Recommended inspection should contain both air and dust sampling. This makes sure that air borne and settled dust does not still contain highly elevated mold spores and that the area is safe and clean.