Mold Scams
MOLD SCAMS
Avoid Being Scammed – Protect Your Home and Your Wallet
D. Quinn Const., Inc. / Quinn Inspection Inc.
Certified Residential Mold Inspector | Certified Indoor Environmental Consultant
The best way to avoid mold-related scams is simple: never hire a mold removal contractor to perform your mold inspection or testing. Quinn Inspection Inc. is not in the mold remediation business. We have no financial interest in the outcome of your inspection or laboratory results. Our findings are always independent, unbiased, and neutral.
Even if you choose another company, make certain the inspector has no affiliation with any mold remediation contractor. When the same company both “discovers” mold and profits from removing it, a serious conflict of interest exists. The opportunity to create unnecessary work is far too great. The only reliable protection is complete separation between inspection/testing and remediation.
Like every industry, the mold business attracts its share of opportunistic operators who profit from homeowners’ limited knowledge. Below are the top eight mold scams and clear guidance on how to avoid them.
Clearance or Post-Remediation Verification Testing (PRVI)
The final and most critical step in any legitimate mold remediation project is a Post-Remediation Verification Inspection (PRVI) or Mold Clearance Test. This inspection verifies and documents that the remediation was actually successful. It must be performed according to the ANSI-approved IICRC S-520 Standard and completed before any reconstruction begins so the inspector can visually confirm that no mold remains on the remediated materials.
Many remediation contractors offer “FREE” post-remediation clearance testing. Clearance testing is essential—insurance companies, mortgage lenders, and future buyers will almost always require written proof that the mold issue was properly resolved. However, it should never be performed by the same contractor who is waiting to get paid for the remediation work. With thousands of dollars still on the line, it is highly unrealistic to expect an unbiased evaluation of their own performance.
Always have your PRVI / Mold Clearance Test conducted by an independent Certified Indoor Environmental Consultant or Certified Residential Mold Inspector (such as Quinn Inspection Inc.) who has no financial relationship with your remediation contractor. This is the only way to ensure an honest, third-party verification and a healthier home.
Mold Scam #1: Mold Inspectors Who Also Perform Mold Removal
The most widespread and costly scam involves companies that market themselves as “mold inspectors” while also performing remediation. Mold remediation is highly profitable. Many of these firms use free or deeply discounted inspections as a sales tool to generate expensive remediation contracts. Without independent third-party review of the data, the inspection almost always “finds” a problem that requires their services.
In areas with a shortage of qualified independent inspectors, it may sometimes be necessary to use one company for both inspection and remediation. In those cases, demand documented independent third-party review of all sampling data—both before work begins and after remediation is claimed complete.
How to avoid it:
Be extremely skeptical of any free mold inspection. Hire an inspector with no remediation business, or require independent third-party review of every laboratory report and clearance test. An inspector’s compensation should never depend on the outcome of the lab analysis.
Mold Scam #2: Free Post-Remediation Clearance Testing
As detailed above, free clearance testing offered by the remediation contractor is a classic conflict of interest. The survey must occur before reconstruction so the inspector can see the treated surfaces. Insurance carriers, lenders, and future buyers rely on this documentation. A contractor evaluating his own work has a powerful incentive to pass the job regardless of actual conditions.
How to avoid it:
Have the Post-Remediation Verification Inspection (PRVI) and clearance testing performed exclusively by an independent certified inspector (ACAC or equivalent) who does not work for, or receive referrals from, the remediation contractor.
Mold Scam #3: Encapsulating Fungal Growth as a Shortcut
Encapsulation (coating remaining mold to “seal” it in place) is sometimes presented as a solution. While limited encapsulation can be legitimate in inaccessible areas after thorough cleaning, or as a preventive treatment on clean, dry materials, it is never an acceptable stand-alone substitute for actual mold removal.
Responsible contractors remove as much growth as possible by mechanical means, then may apply a clear protective product only after materials are thoroughly dry and clean. Unscrupulous contractors use solid-color encapsulants (often red or white) or ordinary paint (including KILZ) to conceal incomplete work. These products can trap moisture and worsen the problem.
Legitimate limited uses:
- Residual mold in truly inaccessible areas after maximum practical removal.
- Preventive “shield” applied to clean, dry materials after moisture sources have been corrected.
How to avoid the scam version:
Before work begins, require written confirmation that any encapsulant will dry clear so a third-party inspector can visually verify surfaces. Refuse solid-color products and ordinary paints. Ask the contractor to walk you through the containment area and explain exactly why encapsulation is proposed. Review the warranty carefully for exclusions and limits of liability. Encapsulation is not permanent, is not a substitute for removal, and is especially inappropriate where immunocompromised individuals live.
Mold Scam #4: Off-Site Sampling (Sample Switching)
This is deliberate fraud. An inspector maintains a private supply of mold-contaminated materials. Samples collected from those materials—guaranteed to show high levels of problematic molds—are submitted as if they came from your property. The alarming results are then used to push expensive remediation.
How to avoid it:
Prefer inspectors who do not perform remediation. At the time of sampling, ask to see the media. Air-sampling cassettes carry unique manufacturer serial numbers. Confirm those numbers are recorded on the Chain of Custody form sent to an AIHA EMLAP-accredited laboratory. When results arrive, verify the serial numbers match. For media without serial numbers, require on-site identifying marks that also appear on the Chain of Custody. Keep your own record of the numbers.
Mold Scam #5: Using Heat to “Remediate” Mold
Some contractors claim whole-structure heat treatment kills mold and therefore constitutes remediation. This is false. Heat can kill living organisms, but remediation requires physical removal of the mold. Dead mold still contains the same allergens and irritants. Available research does not support claims that heat reliably eliminates hidden growth inside wall cavities. Heat can also stress building materials.
Traditional drying with dehumidifiers and air movers, combined with actual removal of contaminated materials, remains the proven approach.
How to avoid it:
Insist on a remediation protocol that physically removes mold growth. Killing mold is not the same as remediating it.
Mold Scam #6: Ozone Generators as Mold Solutions
Sellers of ozone generators frequently claim their devices kill mold or purify air. Ozone is a toxic gas, not “energized oxygen.” Federal agencies (FDA, EPA) warn that ozone generators sold as air cleaners are ineffective against mold, bacteria, viruses, and many odors, and can produce harmful concentrations even when used as directed. Ozone can irritate the respiratory system and worsen asthma.
An EPA establishment number on packaging does not mean the product is approved, endorsed, or found effective by the EPA. The EPA does not certify or recommend ozone generators for indoor air cleaning.
How to avoid it:
Do not rely on ozone generators for mold control. Physical removal and moisture control remain the only reliable solutions.
Mold Scam #7: “House Cooking” / Artificial Elevation of Spore Counts
Some inspectors deliberately disturb the environment before sampling—running HVAC systems for extended periods, operating fans and vacuums, fluffing upholstery—to maximize airborne mold spores and justify unnecessary remediation.
Proper protocol is to close windows and doors for several hours beforehand. Running the HVAC for a short, documented period (generally no more than 20 minutes) immediately before sampling can be legitimate under specific conditions; prolonged disturbance is not.
How to avoid it:
Close doors and windows 6–8 hours before testing. Observe the inspector’s preparation. Question any prolonged running of fans, vacuums, or HVAC systems solely for sampling purposes.
Mold Scam #8: Insurance-Driven Practices That Favor the Carrier
Some insurance companies maintain networks of “preferred” inspectors and remediators whose continued referrals depend on findings favorable to the insurer—limited sampling, restricted pump flow rates that under-count spores, or inspection-only assignments with no testing.
How to avoid it:
For independent assessment, hire a mold inspector certified by the American Council for Accredited Certification (ACAC) or a comparable recognized body. For remediation, choose contractors trained to IICRC standards. For reconstruction, use properly licensed contractors. Quinn Inspection Inc. provides unbiased inspections and testing precisely because we have no remediation or insurance-network conflicts. You can also visit our mold investigation page (click here).
Bottom line: Separate inspection from remediation. Demand transparency in sampling media, chain-of-custody documentation, and clearance testing. Require clear (not opaque) products if any encapsulant is used. Physical removal of mold and correction of moisture sources remain the only reliable path to a lasting solution. When in doubt, choose professionals whose income does not depend on finding—or creating—a remediation project.
D. Quinn Const., Inc. / Quinn Inspection Inc.
Certified Residential Mold Inspector | Certified Indoor Environmental Consultant
Independent. Unbiased. Focused on your healthy home.