We worked on a commercial building that had excess water penetrate multiple floors and invade several rooms on each floor. Using our time wisely, we determined what walls were actually affected using a moisture meter.
A moisture meter detects moisture within the walls—very helpful when we can’t see the affected area. This allows us to focus on a precise area instead of trying to aimlessly dry an entire area.
The meter is noninvasive and can be used by holding it against a plaster, baseboards, or drywall—no holes are necessary. It gives you a number between one and one hundred. The lower the moisture content number, the dryer it is. As shown in the picture, the 82.9 represents a very wet area of the wall while the 7.1 represents a dryer area.
The goal is to have the numbers of zero moisture content but sometimes other factors skew the results such as humidity.