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Mold Remediation Reports from Issaquah

Project Type > Inspection & Remedation Report for a Home with Water Damage

PROJECT SUMMARY

Reason for inspection:

  • Client noted water damage on the ceiling of her bathroom and requested a quote for remediation.

PROPERTY DESCRIPTION:

  • 1,760 ft² single family residence built in 1953.

JOBSITE PHOTOS

Area of Ceiling to Remove

Area of Ceiling to Remove

Light Mold on Window

Light Mold on Window

Water Damage Around Fan

Water Damage Around Fan

Wet Ceiling

Wet Ceiling

Wrong Type of Fan Vent

Wrong Type of Fan Vent

LOCATION:  Upstairs Hall Bathroom

Moisture and Gas Measurements:

RH:Temp:CO2:CO:
ActualTargetActualMinimumActualTargetActualTarget
63%<50%70 °F>60F960 ppm<11000 ppm<3

Observations:

  • Visible mold growth noted on the surface of the ceiling sheetrock.
  • Water staining noted on ceiling around ventilation fan.
  • Elevated moisture levels were noted along the entire joist bay shared with the ventilation fan.
  • Elevated moisture in ceiling appears to be due to the bathroom ventilation fan not being appropriately ducted to the exterior of the home. Humid air is pumped into the ceiling cavity and condenses causing wet insulation, sheetrock and mold.
  • Noisy and inefficient ventilation fan present. This limits the removal of humidity from inside the building envelope. The fan was also very dirty with also reduces its efficiency.
  • Roof vent for the ventilation fan may not be appropriate for connecting the ventilation ducting to.
  • A small amount of visible mold growth was noted around the edge of the window.

Recommendations:

  • Remove water damaged sheetrock from ceiling in accordance with standard mold remediation guidelines.
  • Clean all mold from the interior of ceiling cavity using HEPA certified vacuums.
  • It is possible that underlying framing may need drying prior to any rebuild. Bid below does not include any dry-out.
  • Install a collared, 4” flapper vent in the roof to ensure the ventilation fan is directly connected to the exterior.