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Mold Testing Reports from Olympia

Project Type > Inspection Report for Testing Indoor Air Quality for Mold

PROJECT SUMMARY

REASON FOR INSPECTION:

  • Client has been dealing with an ongoing odor issue as well as high humidity issues.  Environix hired to inspect the homes ventilation as well as collect an indoor air quality sample and provide recommendations where needed.

PROPERTY DESCRIPTION:

  • This single family residential property was built in 1925 and is 1418 ft².

JOBSITE PHOTOS

Kitchen area where odors are most prominent.

Kitchen area where odors are most prominent.

Toe kicks removed in kitchen to exterminate rodent issues

Toe kicks removed in kitchen to exterminate rodent issues

Location of air sample

Location of air sample

Dark staining around nails in attic sheathing are an indication of high humidity.

Dark staining around nails in attic sheathing are an indication of high humidity.

No elevated moisture in subfloor or joists

No elevated moisture in subfloor or joists

LOCATION:  Interior of Home

Observations:

  • Odors are the result of poor ventilation and accumulated high humidity.
  • Closets with unpainted wood have an “old wood” smell, which is also the result of accumulated high humidity.
  • Odors associated with cohabitating with cats and rodents are amplified by the accumulated high humidity.
  • One spot on the wall in the kitchen appears to be oily and off-color. This spot is likely the result of grease condensing on this area of the wall. As the kitchen fan has been recirculating humid air in the kitchen due to the recirculation port not being blocked off, this area may be the result of recirculated cooking fumes.

Recommendations:

  • See ventilation section above for recommendations to eliminate condensation.
  • Install a relative humidity gauge on an interior wall in a central area of the home (approximately eye level). Monitor the RH for excessive humidity readings. Maintaining an interior RH level of <50% will greatly reduce the probability of odors or mold growth.
  • Recommend heating the home to at least 65ºF in the winter months.

 LOCATION:  Crawlspace

Observations:

  • Insulation is insufficient in some areas.
  • No air sealing noted in subfloor. Air sealing is a technique where the small holes and gaps in the subfloor, such as around plumbing fixtures, are sealed with expanding foam. This greatly reduces the air movement from the crawlspace into the main living area of the home.  Not only does this improve the energy efficiency of the home, it significantly reduces the flow of odors and mold spores from the crawlspace into the home.
  • Ventilation is adequate. The client reports the crawlspace ventilation was just recently unblocked.

Recommendations:

  • Consider installing additional insulation in areas where insulation is inadequate.
  • Consider air sealing all major penetrations in subfloor with spray foam.

 LOCATION:  Studio

Observations:

  • Subfloor is concrete slab and is exposed in majority of studio. Client is installing Pergo flooring and laminate over concrete subfloor.  This is a good option because carpet can hold moisture from vapor passing through the concrete and create odors if not properly ventilated.
  • New fan installed in the studio.

Recommendations:

  • Follow ventilation recommendations to reduce humidity and odors.

LABORATORY RESULTS

Lab Results 6

ANALYSIS OF YOUR RESULTS:

  • No Amplification (<threshold): No mold spores were measured at levels equal to or above the threshold, and do not indicate a site of probable mold amplification and growth.  Please refer to the attached report for more detailed information.

ADDITIONAL SAMPLING:

Lab Results 7