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ENVIRONMENTAL HAZARDS - INSPECT, TEST, REMEDY
MOLD: A COMPLETE GUIDE to TEST CLEAN PREVENT
AIR CLEANER PURIFIER TYPES
AIR FILTERS for HVAC SYSTEMS
AIR POLLUTANTS, COMMON INDOOR
AIR QUALITY IMPROVEMENT STRATEGIES
ALLERGEN TESTS for BUILDINGS
ANIMAL ALLERGENS / PET DANDER
ANIMAL or URINE ODOR SOURCE DETECTION S
ATTORNEYS and EXPERT WITNESSES
BIBLIOGAPHY ENVIRONMENTAL HEALTH, MOLD, IAQ
CAR MOLD CONTAMINATION
CARPET DUST IDENTIFICATION
CARPET MOLD CONTAMINATION
CAT DANDER in BUILDINGS
COMBUSTION GASES & PARTICLE HAZARDS
CONDENSATION or SWEATING PIPES, TANKS
CPSC Indoor Air Pollution Book Online Copy
DUCT SYSTEM & DUCT DEFECTS
EMERGENCY RESPONSE, IAQ, GAS, MOLD
FLOOD DAMAGE ASSESSMENT, SAFETY & CLEANUP
FLOODS in BUILDINGS, MOLD PREVENTION
GAS EXPOSURE EFFECTS, TOXIC
HUMIDITY CONTROL & TARGETS INDOORS
HOUSE DUST ANALYSIS
HOUSE DUST COMPONENTS
INDOOR AIR QUALITY IMPROVEMENT GUIDE
INSULATION MOLD TEST
MILDEW REMOVAL & PREVENTION
MOISTURE CONTROL in BUILDINGS
MOLD GROWTH on SURFACES, TABLE OF
MYCOPHOBIA, STAINS MISTAKEN for MOLD
NOISE / SOUND DIAGNOSIS & CURE
ODORS GASES SMELLS, DIAGNOSIS & CURES
OZONE MOLD / ODOR TREATMENT WARNINGS
RADON HAZARD TESTS & MITIGATION
SAFETY HAZARDS GUIDE
SICK HOUSE IAQ QUESTIONNAIRE
SMELL PATCH TEST to Track Down Odors
STAIN DIAGNOSIS on BUILDING INTERIORS
VENTILATION in BUILDINGS
Mold remediation mistakes: should we use ozone to kill mold? Here we explain how relying just on "ozone mold killing machines" and failure to take the necessary steps to prevent new mold growth after a mold cleanup project can end up costing a lot of extra money. Using an ozone generator in a building where black mold contamination is present such as in our page top photograph would be an ineffective remedy.
This section of our "How to Clean Mold" article describes common mistakes people make when attempting to clean up mold. Avoiding these mold cleanup errors can save you money and may also avoid dangerous side effects of bleach, mold chemicals, or ozone when improperly applied.
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Ozone Generators are another futile attempt to "kill" mold instead of cleaning it up. This "magic bullet" approach does not work and can destroy some building materials as well as the health of building occupants.
Because of the trouble and cost of performing an effective mold cleanup in buildings, some vendors offer what sounds like an attractive alternative, offering to "kill all building mold" using ozone.
One Midwest company offers to tent the building and follow a mold extermination procedure.
It would be silly to leave Aspergillus sp., a problematic and easily-airborne mold, in place on this subfloor, trying to "kill it" with a sterilizing gas or spray.
Killing mold is not the same as "removing" problem mold: As with the "bleach" and other "kill the mold" approaches we described above, this process fails to remove the problem reservoir from the building, leaving toxic or allergenic particles, even if they are no longer viable.
Trying to kill mold with ozone risks oxidizing other building materials: One of our clients, in an effort to remove odor and mold problems from their building, rented a commercial ozone generator ran it aggressively in closed rooms in their home.
The ensuing odors, which we tested and traced to oxidized carpet padding, were so severe that the building was no longer habitable. Carpeting had to be removed as well as other oxidized rubber and foam products which had been "ozone treated."
Worse, the underlying cause of the original complaint, which we traced to a history of flooding basement and wet building materials there, had gone unrecognized and still needed to be addressed.
There are valid applications of ozone as a disinfectant but it is not a valid treatment for mold in buildings.
See OZONE MOLD / ODOR TREATMENT WARNINGS in Buildings: A Summary of Hazards and False Claims
This discussion has moved to COSMETIC MOLD CLEANUP EXPENSE
This discussion has moved to FAILURE TO PREVENT FUTURE MOLD
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Technical Reviewers & References
Mold Contamination Testing, Cleanup, Prevention: references & products
OTHER IAQ ISSUES: How To Find and Address Other Indoor Air or Indoor Environment Contaminants Besides Mold
Mold or allergens may not be the only or even the main indoor environmental contaminant. Don't let media attention to mold cause so much enviro-scare fear that other, possibly more urgent hazards go un-addressed.