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2. Moisture meter - Wikipedia

   en.wikipedia.org/wiki/Moisture_meter

   Measuring water leakage in exterior wall with Trotec T660 Moisture Measuring Device, using dielectric measurement method (indicative). Moisture meters are measuring instruments used to measure the percentage of water in a given substance, as physical properties are strongly affected by moisture content and high moisture content for a period of time may progressively degrade a material.

3. Indoor mold - Wikipedia

   en.wikipedia.org/wiki/Indoor_mold

   Piping in walls may also be a source of mold, since they may leak (causing moisture and condensation). [ 10 ] Spores need three things to grow into mold: nutrients – cellulose (the cell wall of green plants) is a common food for indoor spores; moisture – to begin the decaying process caused by mold; and time – mold growth begins from 24 ...

4. Interstitial condensation - Wikipedia

   en.wikipedia.org/wiki/Interstitial_condensation

   This meter works on a resistance principle that measures the flow of electricity between two pin tips and measures the moisture of that very tiny path. Pin meters only measure the moisture at the point in the material (drywall or wood) between the two pins. Behind wall testing with electromagnetic moisture meters.

5. Hygrometer - Wikipedia

   en.wikipedia.org/wiki/Hygrometer

   A hygrometer is an instrument which measures the humidity of air or some other gas, that is, how much water vapor it contains. [1] Humidity measurement instruments usually rely on measurements of some other quantities such as temperature, pressure, mass, and mechanical or electrical changes in a substance as moisture is absorbed.

6. TDR moisture sensor - Wikipedia

   en.wikipedia.org/wiki/TDR_moisture_sensor

   A TDR waveguide with exposed wires. In the waveform analysis a sensor (usually a probe) is placed in the material to be tested. The sensor contains a waveguide consisting of two, three, or more parallel wires which is connected via a coaxial cable to a voltage pulse generator which sends precisely defined voltage pulses into the sensor.

7. Damp (structural) - Wikipedia

   en.wikipedia.org/wiki/Damp_(structural)

   More recently, systems have become available that allow plasterboard or insulation board to be used to replaster walls affected by rising damp. After the existing plaster has been hacked off the wall, a salt and moisture retardant cream is applied to the wall. The plasterboard is then applied to the wall using a salt/moisture-proof adhesive.