How direct wall-cavity air sampling can help investigate hidden mold concerns after water leaks, staining, or persistent musty odors.
In-wall air sampling is a targeted method used to collect an air sample from inside a wall cavity or other concealed space. It can be useful when an inspection suggests that moisture or mold may be present behind a finished surface but the cavity is not yet open.
A wall-cavity sample is one piece of an investigation. Laboratory results should be interpreted together with the physical inspection, moisture conditions, building history, and comparison samples when applicable. Sampling does not replace locating and correcting the source of moisture.