During a home inspection for mold, the inspector walks around the interior and exterior of the home checking for the presence of mold with a visual inspection and by taking measurements. To find mold, the inspector tests humidity and moisture levels inside of rooms and looks for visual evidence of water damage. Samples of mold are taken for analysis when necessary.
Inside of the home, a complete mold inspection includes checking for signs of mold on ceilings, walls, floors and doorways. Certain rooms in the home, such as the bathroom, kitchen and laundry area, are prone to moisture, so the inspector looks for mold inside of ventilation systems, which are likely to have some humidity. Sinks, toilets, tubs and water lines are inspected, and the home's heating and cooling system is also thoroughly checked. The inspector visits the basement or crawlspace under the home and checks for visible signs of moisture. In the attic, insulation, exposed framing and ventilation typically are inspected.
When checking the home's exterior, the inspector takes a look at how well the roof's water drainage system works. Chimneys, vents and skylights come under scrutiny, but inspectors are not required to walk on roofs or do water testing. Exterior mold inspection also includes porches and adjoining steps, decks, windows and exterior coverings. The inspector takes samples of indoor and outdoor air and investigates musty odors.