POST-REMEDIATION VERIFICATION
& CLEARANCE TESTING
Independent Third-Party Confirmation Your Property is Safe
IICRC S520 compliant • Insurance documentation • Unbiased testing • Safe re-occupancy certification
WHY POST-REMEDIATION VERIFICATION IS CRITICAL
Mold remediation companies tell you the job is done – but how do you know for sure? Independent verification protects you from:
- 🚨 Incomplete mold removal
- 🚨 Hidden contamination in walls or HVAC
- 🚨 Elevated spore counts despite visible cleanup
- 🚨 Moisture sources not addressed
- 🚨 Remediation protocol violations
- 🚨 Insurance claim denials
- 🚨 Legal liability for tenant/employee exposure
- 🚨 Recurring mold growth after reopening
- 🚨 Failed containment procedures
- 🚨 Cross-contamination to clean areas
THE INDEPENDENT VERIFICATION ADVANTAGE
We don't do remediation – that's our strength.
- ✓ Zero financial incentive to fail you
- ✓ Unbiased, scientifically accurate results
- ✓ Hold remediation companies accountable
- ✓ Insurance companies trust third-party testing
- ✓ Legal protection if mold returns
- ✓ Peace of mind for re-occupancy
That's why independent verification isn't optional – it's essential.
WHAT IS POST-REMEDIATION VERIFICATION?
Post-Remediation Verification (PRV) is an independent inspection and testing protocol conducted by a certified third-party after mold remediation is completed. It confirms the property has returned to normal fungal ecology (NFE) and is safe for occupancy.
VISUAL INSPECTION
Comprehensive examination to verify:
- All visible mold growth removed
- No contaminated materials remaining
- Surfaces properly cleaned
- Containment was effective
- No cross-contamination to adjacent areas
- Work area is debris-free
AIR QUALITY TESTING
Laboratory analysis confirming:
- Airborne spore counts at normal levels
- Indoor levels equal to or lower than outdoor
- No elevation of concerning species
- Multiple sampling locations tested
- Comparison to baseline/control samples
- AIHA-accredited lab analysis
MOISTURE ASSESSMENT
Verification that moisture issues resolved:
- Moisture levels in acceptable ranges
- No hidden moisture in walls/ceilings
- Source of moisture eliminated
- Humidity under control
- Thermal imaging for hidden leaks
- Prevention measures in place
IICRC S520-2024 COMPLIANCE
Our post-remediation verification follows the latest ANSI/IICRC S520-2024 Standard for Professional Mold Remediation. This ensures:
WHEN YOU NEED POST-REMEDIATION VERIFICATION
Clearance testing is required in multiple scenarios to protect property owners, ensure compliance, and document successful remediation.
RESIDENTIAL PROPERTIES
- After basement mold remediation
- Following attic or crawl space cleanup
- Post-water damage restoration
- Before selling property (disclosure protection)
- Before tenants move back in
- Insurance claim requirements
COMMERCIAL PROPERTIES
- Before employee re-entry
- Lease agreement requirements
- OSHA compliance documentation
- Liability protection
- Tenant satisfaction verification
- Property management standards
LEGAL & INSURANCE
- Insurance claim documentation
- Proof of successful remediation
- Lawsuit protection
- Regulatory compliance
- Transfer of liability documentation
- Court-admissible evidence
SENSITIVE ENVIRONMENTS
- Healthcare facilities
- Schools and daycares
- Senior living facilities
- Food service operations
- Clean rooms or labs
- High-occupancy buildings
OUR POST-REMEDIATION VERIFICATION PROCESS
Comprehensive testing protocol ensuring your property is genuinely safe for re-occupancy
PRE-VERIFICATION CONSULTATION
Before testing begins, we coordinate with all parties:
- Review remediation scope of work
- Confirm containment is still in place
- Verify 24-48 hours have passed since completion
- Plan sampling locations with property owner
- Coordinate timing with remediation company
- Discuss any specific concerns or requirements
COMPREHENSIVE VISUAL INSPECTION
Our certified inspector examines all remediated areas:
- Verify all visible mold growth removed
- Check for remaining water stains or discoloration
- Inspect containment integrity
- Confirm negative air machines functioned properly
- Examine adjacent areas for cross-contamination
- Document conditions with detailed photography
- Review work area cleanliness and debris removal
If visual inspection reveals incomplete work, we stop here and require re-remediation before air testing.
AIR QUALITY SAMPLING
Multi-point air sampling to detect airborne contamination:
- Remediated Area Samples: Collected from center of work zones
- Adjacent Area Samples: Test for cross-contamination
- Outdoor Control Sample: Establishes baseline comparison
- Unaffected Indoor Sample: Normal area for reference
- Aggressive Air Sampling: Fan-induced agitation if needed
- HVAC System Testing: If system was contaminated
MOISTURE & ENVIRONMENTAL TESTING
Ensure moisture sources have been eliminated:
- Moisture meter readings on all surfaces
- Thermal imaging for hidden moisture
- Relative humidity measurements
- Temperature documentation
- Verification of moisture source repairs
- Assessment of ventilation improvements
LABORATORY ANALYSIS
Samples sent to AIHA-accredited laboratory:
- Microscopic spore identification
- Spore count quantification (spores/m³)
- Species-level identification
- Comparison to outdoor/baseline samples
- Statistical analysis of results
- Results typically ready in 24-48 hours
CLEARANCE REPORT & CERTIFICATION
Comprehensive documentation you can use for any purpose:
- Pass/Fail clearance determination
- Complete laboratory results with interpretation
- Visual inspection findings with photos
- Moisture assessment data
- Clearance certificate if testing passes
- Recommendations for any failures
- Insurance-ready documentation
- Re-occupancy safety confirmation
CLEARANCE CRITERIA: WHAT MAKES A PROPERTY PASS?
Our clearance decisions are based on industry-standard criteria, not subjective opinions.
✅ PASSING CRITERIA
Your property receives clearance when ALL of these conditions are met:
- Visual: No visible mold growth or water damage
- Air Quality: Indoor spore counts ≤ outdoor control samples
- Species: No elevation of pathogenic mold species
- Moisture: All moisture readings in normal ranges (<15% wood, <60% RH)
- Odor: No musty or earthy odors present
- Containment: No evidence of cross-contamination
- Cleanliness: Work area clean and debris-free
Safe for re-occupancy
❌ FAILING CRITERIA
Clearance is denied if ANY of these conditions exist:
- Visual Mold: Any visible mold growth remaining
- Elevated Spores: Indoor counts > outdoor by 2x or more
- Pathogenic Species: Presence of Stachybotrys, Chaetomium, or other toxigenic molds
- High Moisture: Readings above 15% in wood or 60% RH
- Musty Odors: Microbial VOCs detected
- Incomplete Work: Contaminated materials still present
- Cross-Contamination: Adjacent areas show elevation
Re-remediation required
WHAT HAPPENS IF CLEARANCE TESTING FAILS?
Your Protection: This is exactly why independent third-party testing exists. We hold remediation companies accountable so you don't pay twice for incomplete work.
WHY CHOOSE US FOR POST-REMEDIATION VERIFICATION
100% INDEPENDENT & UNBIASED
We don't perform remediation services. Ever. This means we have zero financial incentive to pass or fail your testing. Our only goal is accurate, honest results that protect your interests.
IICRC S520-2024 CERTIFIED
Our inspectors are certified in the latest IICRC S520 standards for post-remediation verification. We follow industry best practices and our reports meet all regulatory and insurance requirements.
AIHA-ACCREDITED LAB ANALYSIS
All samples analyzed by American Industrial Hygiene Association accredited laboratories. Chain of custody maintained. Court-admissible results.
FAST 24-48 HOUR TURNAROUND
We understand you want to reopen quickly. Most clearance reports delivered within 24-48 hours. Rush same-day service available for urgent situations.
COMPREHENSIVE DOCUMENTATION
Detailed reports with photos, lab results, clearance certification, and insurance documentation. Everything you need for claims, legal protection, or tenant communication.
REMEDIATION COMPANY COOPERATION
We work professionally with remediation contractors while maintaining objectivity. Most reputable companies welcome our verification because it protects them too.
INSURANCE ACCEPTED
Our clearance testing is typically covered by insurance when remediation is covered. We provide detailed invoices and documentation for claim submission.
LOCAL ST. LOUIS EXPERTISE
We understand St. Louis mold challenges: high humidity, clay soil, river proximity, and seasonal moisture patterns. Our clearance criteria account for local baseline fungal ecology. Learn more about St. Louis basement mold challenges.
WHAT PROPERTY OWNERS SAY ABOUT OUR CLEARANCE TESTING
"Our remediation company said they were done, but I wanted independent verification before my family moved back in. St. Louis Mold Testing found elevated spore counts in the HVAC system that the original company missed. They had to re-clean the ducts, and the second clearance test passed perfectly. Worth every penny for peace of mind."
"We manage 15 apartment buildings and always use independent clearance testing before tenants return. St. Louis Mold Testing's reports are thorough, professional, and have saved us from liability issues multiple times. Their unbiased approach holds remediation companies accountable and protects us legally. Essential service for property managers."
"Our insurance company required third-party clearance testing after basement flooding. The inspector was professional, thorough, and delivered results in 36 hours. The clearance certificate was exactly what our insurance needed to close the claim. Fast, reliable, and independent – exactly what we needed."
POST-REMEDIATION VERIFICATION PRICING
Transparent pricing for independent clearance testing. Most clients choose Standard package for comprehensive verification.
BASIC CLEARANCE
Small Projects
- ✓ Single-room remediation projects
- ✓ Visual clearance inspection
- ✓ 2 air quality samples
- ✓ 1 outdoor control sample
- ✓ Moisture verification
- ✓ Basic clearance report
- ✓ Lab analysis included
- ✗ Thermal imaging
- ✗ HVAC testing
Best for: Bathroom mold, small basement areas, single-room projects
SCHEDULE TESTINGSTANDARD CLEARANCE
Complete Verification
- ✓ Multi-room or whole-home projects
- ✓ Comprehensive visual inspection
- ✓ 4 air quality samples
- ✓ 2 outdoor/baseline control samples
- ✓ Thermal imaging scan
- ✓ Advanced moisture mapping
- ✓ Cross-contamination testing
- ✓ Detailed photo documentation
- ✓ Full clearance report with certification
- ✓ Insurance documentation package
Best for: Basement remediation, water damage projects, insurance claims
SCHEDULE TESTING✓ 100% Independent Testing Guarantee
PREMIUM CLEARANCE
Commercial & Large Projects
- ✓ Everything in Standard, plus:
- ✓ 6+ air quality samples
- ✓ Complete HVAC system testing
- ✓ Multiple floor/zone verification
- ✓ Surface sampling if needed
- ✓ Aggressive air sampling
- ✓ Litigation-ready documentation
- ✓ Rush same-day results available
- ✓ Post-testing consultation
- ✓ Re-test discount (50% off)
Best for: Commercial properties, large homes, complex remediation
GET CUSTOM QUOTEAll packages include: AIHA-accredited laboratory analysis, IICRC S520-compliant protocols, clearance certification (if passed), insurance-ready reports, and expert interpretation.
Re-testing discounts: If initial clearance fails, re-testing after corrections is 50% off standard pricing.
Add-ons available: Rush same-day results (+$150), additional sampling points ($75 each), HVAC system inspection (+$200), weekend/holiday service (+$100)
POST-REMEDIATION VERIFICATION FAQs
When should clearance testing be performed?
Testing should occur 24-48 hours after remediation completion, while containment is still in place, and BEFORE any reconstruction, painting, or sealant application begins. Testing too early or after reconstruction can produce inaccurate results.
Is independent third-party testing really necessary?
Absolutely. While remediation companies may offer their own "clearance," they have a conflict of interest. Independent testing protects you legally, satisfies insurance requirements, and ensures objective results. IICRC S520 standards specifically require third-party verification for PRV.
What if my remediation company says testing isn't needed?
Red flag. Reputable remediation companies encourage independent verification because it protects both parties. Any company discouraging testing may be cutting corners. Independent clearance is your legal protection and proof the job was done right.
How long do I have to wait for clearance results?
Most clearance results are ready in 24-48 hours. You'll receive a preliminary verbal report after the inspection, with full laboratory results and written clearance report within 48 hours. Rush same-day service available for urgent situations.
What happens if clearance testing fails?
If testing fails, the remediation company must address the specific deficiencies at no additional cost to you (if under warranty). We provide detailed findings showing exactly what failed. Re-testing after corrections is offered at 50% discount. Failure is actually good news – it means we caught problems before you reopened.
Will my insurance cover clearance testing?
If your insurance covered the remediation, they typically cover post-remediation verification as part of the restoration process. We provide detailed invoices and documentation for claim submission. Check with your adjuster.
Can I be present during clearance testing?
Yes, but it's not required. If you're present, our inspector will show you the sampling process and explain findings. If not, we document everything with photos and discuss results by phone when lab analysis is complete.
What's the difference between PRV and PRE?
Post-Remediation Verification (PRV) is independent third-party testing by a certified inspector (that's us). Post-Remediation Evaluation (PRE) is internal quality control by the remediation company itself. Only PRV provides legal protection and unbiased results. IICRC S520 distinguishes between the two.
How many air samples are needed for clearance?
Minimum 2-3 samples for small projects (one in remediated area, one outdoor control). Larger projects need 4-6+ samples testing multiple zones plus controls. We determine optimal sampling strategy based on remediation scope and building size.
Can I use your clearance certificate for selling my home?
Yes. Our clearance certificates provide proof that mold remediation was successful and independently verified. This protects you from disclosure issues and gives buyers confidence. Essential for real estate transactions involving prior mold remediation.
DON'T REOPEN WITHOUT INDEPENDENT VERIFICATION
Protect yourself, your occupants, and your investment
⏰ Need same-day results? Ask about our rush testing service