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Mold Inspection Reports from Marysville

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

Project Type > Home Inspection for Mold & VOCs in Marysville

PROJECT SUMMARY

REASON FOR INSPECTION:

  • Client recently purchased and moved into this home and is experiencing allergic reactions when in home. She is concerned with air quality and mold growth, Environix will inspect interior of home for mold/moisture issues.

PROPERTY DESCRIPTION:

  • This single family residential property was built in 1969 and is 2,000 ft².

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.

Recommendations:

  • Although the indoor mold spore levels are within the normal range, the on-site examination of the property revealed problems that require action. Please review the recommendations below.

JOBSITE PHOTOS

Elevated humidity in dining room

Elevated humidity in dining room

Addition bathroom tub faucet has a constant leak

Addition bathroom tub faucet has a constant leak

Mold observed on window framing in addition living room

Mold observed on window framing in addition living room

High VOCs noted in new carpet in addition bedroom

High VOCs noted in new carpet in addition bedroom

OBSERVATIONS

OBSERVATIONS APPLICABLE TO ENTIRE INSPECTION AREA:

  • Client recently purchased and began remodeling this home.
  • This home had previous ventilation and heating issues that resulted in condensation and mold growth on cold surfaces, such as the windows.
  • Additionally, this home previously had upgraded the windows with zero fans in the house – this creates air quality problems when the natural air leakage of the old windows is removed by new airtight windows.
  • Elevated VOCs were detected in the home in the area where new carpet has been installed.
  • Old carpeting was recently removed from the home without running any HEPA air filtration or other negative pressurization of the home. This can release a large amount of trapped mold spores and other allergens into a home as the old carpeting is agitated.

Recommendations:

  • Recommend adding better fans on opposite ends of the home.
  • To remove the VOCs and elevated humidity from the home, increase ventilation and open windows temporarily.
  • Consider running high powered a HEPA air scrubber in the home for 3 days to remove airborne allergens such as mold spores and other allergens that were likely released from the old carpet.

RELATIVE HUMIDITY & TEMPERATURE READINGS:

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CO2 READINGS:

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ALL RECORDED MOISTURE AND GAS MEASUREMENTS:

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VENTILATION:

OBSERVATIONS:

  • Relative humidity levels are elevated. Generally, indoor RH levels should remain under 55% or under 50% in homes with poorly insulated exterior walls.
  • CO2 levels are normal. While not a direct health problem, elevated CO2 levels are an indication of stale indoor air and poor ventilation. This can lead to a buildup of pollutants and humidity, which can cause mold growth.
  • VOC level is elevated in the Addition Area. Volatile organic compounds (VOCs) can be composed of a number of chemicals, including benzene and acetone and are commonly found in new furniture, plastics and other manufactured materials. These chemicals evaporate or vaporize readily and, at high levels can be harmful to human health and the environment. Often, they are an indication of newer contents, stale indoor air and poor ventilation.
  • Home suffers from insufficient ventilation. This leads to a buildup of indoor pollutants and increases the relative humidity, creating conditions conducive to mold growth and dust mites.

LOCATION: Addition Section of Home

OBSERVATIONS:

  • The addition is equipped with carpeting in clean, new condition.
  • The windows in this area of the home are vinyl framed and show past evidence of moderate mold growth. The windows look to have been recently cleaned of mold, perhaps before the home was sold. This indicates high humidity and poor ventilation have been issues in this area in the past.
  • Client reports this area of the home was not previously heated. A minimum indoor temp of 65ºF must be maintained to minimize excessive humidity and mold growth.
  • High VOCs noted in this room near the newly installed carpet. This could be due to the carpet/pad or the glue used to adhere the padding to the slab. High VOCs can cause allergic type reactions to sensitive individuals.

Recommendations:

  • Increased ventilation will also help dissipate the elevated VOCs by diluting the air.

LOCATION: Kitchen / Dining Room / Living Room

OBSERVATIONS:

  • Significantly elevated humidity was noted in this area of the home. An Indoor Air Quality sample was collected in the kitchen / dining area. Elevated humidity can prohibit mold growth and worsen air quality.
  • The living room is equipped with carpeting in clean, new condition. Old carpet was recently removed; this carpet was said to be in bad condition. Removing dirty carpet from a home without the use of a HEPA filtration device is not recommended because mold spores and allergens can be left behind.

Recommendations:

  • Consider ducting the kitchen exhaust fan to the exterior of the home to remove the excess humidity generated by cooking.

LOCATION: Bedrooms

OBSERVATIONS:

  • The bedrooms are equipped with carpeting in clean, new condition.
  • The bedroom windows are vinyl framed and show past evidence of light condensation and moderate mold problems. The windows appear to have had bad mold issues in the past, but they look to have been cleaned, likely prior to the sale of the home. These issues were the result of ongoing exposure to high humidity, and can affect indoor air quality.
  • Walls were recently painted, so it is indeterminate if any light mold was previously growing on the walls.

LOCATION: Master Bedroom & Master Bathroom

OBSERVATIONS:

  • The Master bedroom is equipped with carpeting in clean, new condition.
  • The bedroom windows are vinyl framed and show past evidence of moderate mold problems.
  • The Master bathroom is in the midst of being remodeled. The wall cavities are currently open and an inspection of them revealed no mold issues, nor any evidence of leaks within the walls.

Project Type > Inspection in Basement for Mold in Marysville

PROJECT SUMMARY

REASON FOR INSPECTION:

  • Client requested an inspection of the basement apartment due to visible mold growth recently found on walls and windows.

PROPERTY DESCRIPTION:

  • This single family residential property was built in 2001 and is 2,260 ft².

CAUSE OF MOLD:

  • Poor indoor ventilation leading to elevated relative humidity levels. This in turn led to mold growth on windows and exterior walls.

LABORATORY RESULTS

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ANALYSIS OF YOUR RESULTS:

  • Extreme Amplification: Mold spores were detected at levels many times greater than the threshold, indicating a site of high mold amplification and growth. Please refer to the attached report for more detailed information.

The most likely contributor of the elevated mold spores is:

  • Elevated humidity.

Recommendations:

  • Due to the elevated levels of mold spores, the operation of a commercial HEPA air scrubber is highly recommended. This will rapidly lower the indoor mold spore levels. Please see included pricing.

JOBSITE PHOTOS

Moderate to Heavy Mold on Windows in Living Room

Closed Curtains Trap Moisture Behind Windows

Closed Curtains Trap Moisture Behind Windows

Mold on Exterior Wall Behind Living Room Couch

Mold on Exterior Wall Behind Living Room Couch

Mold on Sliding Glass Door

Mold on Sliding Glass Door

RELATIVE HUMIDITY & TEMPERATURE READINGS:

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CO2 READINGS:

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VENTILATION:

OBSERVATIONS:

  • Relative humidity levels are elevated. Generally, indoor RH levels should remain under 55% or under 50% in homes with poorly insulated exterior walls.
  • CO2 levels are elevated. While not a direct health problem, elevated CO2 levels are an indication of stale indoor air and poor ventilation. This can lead to a buildup of pollutants and humidity, which can cause mold growth. Following the ventilation recommendations listed below will lower the CO2 levels in the home.
  • Home may have been inadequately heated in winter months. A minimum indoor temp of 65ºF must be maintained in the winter months to minimize excessive humidity and mold growth.
  • Home suffers from insufficient ventilation. This leads to a buildup of indoor pollutants and increases the relative humidity, creating conditions conducive to mold growth and dust mites.

LOCATION: Living Room

OBSERVATIONS:

  • The living room is equipped with double paned vinyl windows with current evidence of light condensation and moderate mold problems.
  • Light condensation-based mold growth noted on the wall.

Recommendations:

  • Open the curtains to allow better air flow to the windows to dissipate accumulated humidity. Keep the overall humidity levels in the house below 50% RH to prevent condensation.

LOCATION: Bedroom 1 (Main)

OBSERVATIONS:

  • The room is furnished with carpeting in clean condition.
  • The room is equipped with double paned vinyl framed windows with current evidence of moderate mold problems.
  • Light condensation-based mold growth observed on the wall.

Recommendations:

  • Open the window shades to allow better air flow to the windows to dissipate accumulated humidity. Keep the overall humidity levels in the house below 50% RH to prevent condensation.
  • Wipe any accumulated condensation off the windows as soon as it is noticed to prevent mold growth.

Project Type > Mold Inspection in Basement due to Water Intrusion for a Home in Marysville

PROJECT SUMMARY

REASON FOR INSPECTION:

  • Client notes moldy odors in the basement bedrooms along with actual mold found under the baseboard.  Environix hire to inspect the areas of concern and provide recommendations where needed.

PROPERTY DESCRIPTION:

  • This single family 2 story residential property was built in 1998 and is 2,298 ft².

CAUSE OF MOLD:

  • Vapor emissions from saturated soil against foundation.

 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

Air sample collected in basement bedroom

Air sample collected in basement bedroom

Tack strip nails show rust from vapor emissions

Tack strip nails show rust from vapor emissions

Slightly elevated moisture detected in tack strip along exterior wall

Slightly elevated moisture detected in tack strip along exterior wall

Elevated moisture in sheetrock on exterior wall

Elevated moisture in sheetrock on exterior wall

Sheetrock is touching slab allowing vapor to absorb into drywall, creating mold

Sheetrock is touching slab allowing vapor to absorb into drywall, creating mold

Back yard slopes towards house

Back yard slopes towards house

Soil near foundation is becoming saturated from a poor drainage system

Soil near foundation is becoming saturated from a poor drainage system

Saturated soil creates pressure and pushes vapor through cracks in the slab

Saturated soil creates pressure and pushes vapor through cracks in the slab

RELATIVE HUMIDITY, CO2, & TEMPERATURE READINGS:

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LOCATION:  Basement Bedrooms

Observations:

  • The carpeting was recently removed from these bedrooms. The subfloor is a concrete slab.
  • The rooms are equipped with double paned vinyl framed windows.
  • Moderate mold growth noted on the wall. Mold was noted on the drywall underneath the baseboard trim, which indicates the moisture source was a water intrusion in this area and not the result of the high humidity. This mold was found in an area where the drywall was touching the concrete slab. This is not recommended because vapor can pass through the slab and absorb into the drywall which can cause mold.
  • Elevated moisture detected in the wall and in the carpet tack strip. The carpet tack strip nails are rusty along the exterior wall, only. This is caused from saturated soil pushing vapor through the concrete and the vapor absorbing into the drywall and/or carpet.
  • No elevated mold spores detected with air sample. The air quality has not been affected by this issue, however the open crack and passing vapor is causing a musty odor.

Groundwater

  • Evidence of recent groundwater intrusion.
  • The back yard slopes toward the back of the home, where the exterior wall of these rooms is located. Rain water is travelling down the yard and draining off of the roof onto the soil outside this wall. This is creating water pressure on the cold joints and resulting in a water intrusion in the home.
  • A crack in the concrete along the exterior wall has a musty odor. This crack is deep, and it is likely that odors are coming from directly below it.

Recommendations:

  • Recommend filling the crack in the concrete with closed cell spray foam to seal out the odors emanating from this area.
  • Contact a drainage company to assess the drainage issue and suggest a resolution to this problem.
  • Recommend installing vinyl or tile flooring rather than carpeting in these rooms once the water intrusion problems are solved. Use an epoxy based adhesive for this task.
  • Redirect downspouts to a location sloping downhill away from the home.
  • Until the bath fan can be replaced, run the existing fan continuously to lessen the extremely high humidity and high CO2 levels in the basement.
  • Consider installing an interior footing drain. This captures water at the wall/slab junction and removes the water via a sump pump.