Moisture mapping is a non-destructive method used to determine the moisture content of a building material. It is often used to identify areas of high moisture that may indicate a leak or other problem. Moisture mapping can be performed using a variety of methods, including infrared thermography, electrical impedance, and microwave moisture meters.
The acceptable moisture content of a building material varies depending on the type of material and its intended use. However, in general, most building materials should have a moisture content of less than 15%. Higher moisture levels can lead to a variety of problems, including mold growth, rot, and structural damage.
An acceptable damp reading is a reading that indicates that the moisture content of a building material is within acceptable limits. The specific acceptable damp reading will vary depending on the type of material and its intended use. As an example, wood should not exceed 18% moisture level and concrete should not exceed 4% moisture level.
If a damp reading indicates that the moisture content of a building material is too high, it is important to investigate the cause of the excess moisture and take steps to correct the problem. This may involve repairing a leak, improving ventilation, or using a dehumidifier.