
Because we cannot see mold spores with the naked eye, an air sample is taken and examined in a laboratory. Results will reveal whether the mold is present in the home or not and if it is, will reveal the type of mold spores and the severity of the problem. There are several places where air samples will be taken such as areas with water damage or moisture intrusion and places where mold is already visible. An air sample will also be taken in areas of the home that smell musty, indicating mold growth.
When an air sample is being collected, doors and windows should be closed, and indoor-outdoor air exchangers turned off. The weather is also a factor that needs to be considered when taking an air sample, for example, extremely high winds or severe thunderstorms can affect test results. Changes in air pressure can alter mold spore levels which will also change those levels in the home.
To compare results and be sure that mold has been removed, air samples are taken both before and after mold remediation. So, to summarize, air sampling is a good way to find out your home's air quality and is a good additional test for mold.