Certified Mold Inspection

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Mold is a byproduct of the breakdown of organic matter, such as plants, wood, and even food and certain beverages. The problem posed to humans by mold is their spores, which can be released into the air and land on damp surfaces indoors, where they will continue to grow, if the conditions are right. Mold growth left unaddressed can quickly spread and result in damage to the structure of a home. More importantly, mold can compromise the respiratory health of susceptible individuals.

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Mold Inspections and Home Maintenance

A mold inspection starts as a home inspection, which is a non-invasive, visual examination of the home’s interior and exterior, and its various systems and components.

The scope of a mold inspection requires particular knowledge of HVAC systems, roofs, the exterior, and plumbing systems. Musty odors, moisture intrusion via a roof or plumbing leak, or even evidence of suspected mold can warrant a mold inspection.

Once mold gets a foothold, it cannot always be completely eradicated, so the best cure is prevention. Homeowners must be vigilant about checking for leaks both inside and outside, and making sure their home is free of conducive conditions – the main culprit being water. For instance, firewood stacked up against the side of the house can retain moisture from dew, rain and snow. Leaks should be fixed as soon as possible. And indoor humidity and moisture should be controlled by making sure appliances, such as the clothes dryer and dishwasher, are vented properly, and that the vents themselves are operating as they should. Windows are another place prone to mold growth if the frames are old and damaged, or the seals on the panes have failed. And basements and crawlspaces are notorious breeding grounds for mold, especially if they’re used only for storage, the windows are old or damaged, and/or the area experiences occasional flooding. All of these things fall under the category of home maintenance, which InterNACHI® Certified Professional Inspectors® can educate their clients about.

mold on wallBlack Mold Symptoms Removal and Cleaning | Single SourceWhat is Black Mold : What does Black Mold Look Like

Testing

Mold testing involves two main methods: air sampling and surface sampling. Both types require analysis by a certified laboratory. In some cases, the local health department can test the mold samples. But it’s more common for a private lab to perform the analysis and generate the results in a report, and the cost is included in the price of the inspection.

Air Sampling

Air sampling is conducted indoors and outdoors using spore traps or canisters. This less-common method is used for homes in areas suspected of having high concentrations of mold spores. The outdoor samples are used to create a control or baseline to determine the level of contamination, and then the control is compared to the indoor samples. When taking the outdoor sample, the home inspector should be alert to environmental conditions that can affect the results, such as wind, rain, snow, and fluctuating temperatures.

Surface Sampling

Surface sampling is the more common and easiest method for testing for indoor mold.

Here are some methods of surface sampling that can be performed:

-tape sample:
This is the most common method of sampling visible mold, as it allows the inspector to collect several samples in different parts of the home quickly. Sampling kits are typically sold by the laboratories that test for mold and send back the results of their analysis.
-swab sample:
A cellulose swab with a liquid preservative is used to collect any suspected mold for laboratory testing.
-carpet sample:
In rooms where there is carpeting, testing can be performed on vacuumed contents, or even a snip of the carpeting. Typically, carpets that have visible mold or have tested positive for mold should be discarded and replaced, as it’s nearly impossible to remove all traces of mold from carpet fibers, where mold will likely continue to grow.

Summary

When it comes to mold, prevention is the best way to combat it. A damp or musty smell is a likely indicator and should be investigated thoroughly. Homeowners should be encouraged to locate and repair all plumbing leaks and sources of water intrusion, which can quickly lead to mold growth. Home inspectors can get training to identify mold, as well as conducive conditions and where mold is likely to grow. Becoming certified as a mold inspector assures your clients that you understand the standards and safe practices for sampling and reporting on mold.

Mold can cause many health effects. For some people, mold can cause a stuffy nose, sore throat, coughing or wheezing, burning eyes, or skin rash. People with asthma or who are allergic to mold may have severe reactions. Immune-compromised people and people with chronic lung disease may get infections in their lungs from mold.

CDC

Centers for Disease Control

Sample Inspection Report

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