Mold Prevention Checklist

Mold prevention in the indoor environment is a matter of being aware and pro-active to everyday events. Excess indoor mold can be much more that checking an area after a water or roof leak. Here is a detailed mold prevention checklist that will help you identify key areas of concern:

Moisture Control

  • Maintain levels of humidity below 60% (preferably between 30% and 50%).
  • Bathrooms, dryers and other moisture-producing area should be vented to the outdoors.
  • Avoid blockage of air conditioning return air vents and supply air diffusers.
  • Use air conditioners and de-humidifiers when needed to draw excess humidity from the indoor air.
  • Increase ventilation by installing additional crawlspace and attic vents, opening windows when necessary.
  • Use exhaust fans when cooking and washing dishes.
  • Avoid the use of un-vented heaters or high heat in confined areas.
  • Keep the air conditioning thermostat set to “auto” to prevent circulation of excessive humid air.
  • Make sure all central HVAC (heating,ventilation, air conditioning) duct work is thoroughly insulated with no exposed surfaces to attic or crawl spaces.

Performing Regular Inspections

  • Inspect your home monthly for sources of excessive indoor moisture.
  • Utilize a regular maintenance schedule to check for sources of water leaks at the following locations:
  1. Hot Water Heaters
  2. A/C Drain Lines
  3. Appliance Hoses
  4. Showers, Tubs, Sick and Toilets
  5. Visible Piping
  6. Waste/Garbage Disposal System
  7. Caulking around Windows and Doors
  8. Visual Attic Areas
  9. Sprinklers and Fire Suppression Systems
  10. Irrigation Systems

Mold needs organic matter along with a moisture source to actively colonize and grow. Controlling excessive moisture sources will help you prevent mold from establishing itself in your indoor environment.