Water Mitigation Moisture Readings: What Contractors Should Track

Most crews take plenty of readings. The problem is that half of them can't be interpreted a month later because nobody wrote down what material was read, with which meter, or what dry looks like in that structure.

The four readings that belong on every water job

• Material moisture content or relative scale, per monitored point
• Ambient temperature and relative humidity in each affected area
• Grains per pound in the affected space and outside the containment
• Dehumidifier intake and outlet conditions

Set the dry standard on day one

Take a reading from an unaffected area of the same material in the same building. Without that baseline, every number you record afterward is unanchored, and a reviewer can argue you dried to an arbitrary target.

Record the meter, not just the number

Pin and pinless meters on the same wall can read differently by design. Note the instrument and mode with the reading. It costs a tap and eliminates the most common challenge to a drying file.

Fix your monitoring points

Number the points and read the same ones daily. A reading taken 18 inches to the left of yesterday's isn't a trend, it's noise, and trends are the entire argument for when equipment comes out.

Frequency

Daily during active drying, including the day equipment is pulled. A gap in the middle of the log is the part a reviewer will focus on.

Consult ANSI/IICRC S500 for drying criteria. We built the reading capture and psychrometric calculators around this exact routine for water damage crews. Pricing is public if you want to skip the sales call: see plans.