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Mold Inspection Reports from Bainbridge Island

Below are recent mold inspection projects we’ve completed in the Bainbridge Island area.  These reports can help provide you with an idea of the issues we typically encounter in your region.

Project Type > Mold Inspection for a Bathroom on Bainbridge Island

PROJECT SUMMARY

REASON FOR INSPECTION:

  • Mold growth appears on the ceiling in the bathroom; even after it is cleaned off it returns.

PROPERTY DESCRIPTION:

  • This single family 2 story residential property was built in 1997 and is 2,826 ft².

CAUSE OF MOLD:

  • The cause of the mold growth is condensation. The condensation is due to elevated humidity in the home and in particularly within the bathrooms.

 LABORATORY RESULTS

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ANALYSIS OF YOUR RESULTS:

  • No Amplification: 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.

JOBSITE PHOTOS

Mold growth on the master bathroom ceiling.

Mold growth on the master bathroom ceiling.

Mold growth on the master bathroom ceiling.

Mold growth on the master bathroom ceiling.

Failed grout and missing door seal.

Failed grout and missing door seal.

Attic above the bathrooms.

Attic above the bathrooms.

Hall bathroom ceiling.

Hall bathroom ceiling.

OBSERVATIONS

HVAC:

  • The home is equipped with forced air electric heat.
  • Fresh air intake found on furnace system. Fresh air intakes can be very effective at lowering the interior RH in the home.
  • Electrostatic precipitator style filter installed on furnace. The effectiveness of these filters is highly dependent upon regular cleaning.  The buildup of dust on the plates will quickly reduce their filtration ability.  Additionally, some electrostatic precipitators are known to produce ozone, a potentially harmful gas.

Recommendations:

  • Consider having the timer on the fresh air intake for the HVAC system serviced by a qualified HVAC contractor. This system should turn on with the fan in the laundry room.
  • Consider converting the Electrostatic precipitator filter to a 4” Merv 11 pleated filter in tightly sealed filter box. These filters provide excellent particulate filtration and are much more forgiving of irregular maintenance schedules.

RELATIVE HUMIDITY & TEMPERATURE READINGS:

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CO2 READINGS:

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LOCATION:  Master Bathroom

Observations:

  • The bathroom window has current evidence of moderate condensation and light mold problems.

CEILING AND WALLS:

  • Heavy mold growth noted on bathroom ceiling and walls. This occurs when the warm, moist air generated by shower usage interacts with the cool surface of the ceiling and walls. Without adequate ventilation, this causes condensation and subsequent mold growth.

SHOWER:

  • Several small areas of failed grout or caulking in shower. This can lead to water infiltration and mold growth/wood rot in the wallboard and framing behind the shower surround.  However, because the potential mold growth would occur within the wall cavity, the issue has no effect on the indoor air quality.

FLOORING:

  • Failure of the shower door is leading to water intrusion into the adjacent flooring. A small amount of water was noted around the base of the shower. The bottom shower door seal is missing.

Recommendations:

  • See ventilation section above for recommendations to eliminate condensation.
  • Thoroughly clean the grout everywhere on the shower surround.
  • Re-seal the grout on the shower surround.
  • Replace the shower door seal.