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Mold Testing Reports from Issaquah


Project Type > Mold Testing Inspection for Tenants in Basement

Project Summary

  • The new tenants have noticed odors in the basement and are concerned about possible mold growth.
  • This single family residential property was built in 2003 and is 1770 ft².

Laboratory Results

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Analysis of Results

  • No Amplification (<threshold): No mold spores species were measured at levels equal to or above the 90th percentile threshold, and actually came in below average for this time of year. This means that at this time there is no issue with the air quality in the basement. That does not mean that the results could not come back higher at another time of year, but it does mean that if there is any mold growth in the carpet it is not enough to show up even after raking it this time of year.

Job Site Photos

Basement area with possible mold issue

Basement area with possible mold issue

Light condensation-based mold growth around windows.

Light condensation-based mold growth around windows.

No signs of elevated moisture around windows.

No signs of elevated moisture around windows.

No signs of elevated moisture in baseboard.

No signs of elevated moisture in baseboard.

Tack strip did not show rust from water, concrete shows some discoloration.

Tack strip did not show rust from water, concrete shows some discoloration.

Mold growth in clothes washer.

Mold growth in clothes washer.

Landscaping is graded towards condo in places.

Landscaping is graded towards condo in places.

Possible area of water intrusion behind downspout.

Possible area of water intrusion behind downspout.

VENTILATION & FILTRATION:

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LOCATION:  Bathroom / Laundry Room

  • A musty odor was present around the washing machine.
  • Grout and caulking is in good condition and shows no signs of recent water intrusion.
Recommendations:
  • See ventilation section above for recommendations to eliminate accumulated odors and condensation.
  • Run the washing machine empty on a cold water cycle with a cup of bleach to kill off any remaining bacteria and odors inside the machine.
  • Keep the washing machine door open to allow for adequate ventilation of the interior of the machine.

LOCATION:  Basement

  • A musty odor was present in the basement room.
  • No visible mold was observed at time of inspection except for small amounts of condensation based mold around the windows.
  • Possible vapor emissions. Vapor emissions in carpeted rooms can lead to highly elevated levels of mold spores, though in this case it does not appear to be an issue. Vapor emissions can be extremely difficult to eliminate. Lower-cost alternatives include leaving the concrete slab exposed, or installing a more durable material such as tile. These solutions allow the vapor to quickly move into the airspace, which can then be eliminated through ventilation.
  • Musty odor noted in the room. Musty odors are often associated with dampness and elevated microbial growth.  However, musty odors are distinct from the actual mold spores and are not always correlated with elevated levels of mold spores.  Air quality sampling was performed in the room and no elevated levels of mold spores were found.
General Recommendations:
  • The carpet does not seem to have any mold issues at this time. If the owner desires, however, the carpet can be removed and replaced with exposed concrete or tile.