Measure the moisture in gypsum plaster

Moisture measurements provide certainty about the condition of individual walls. The results can be reassuring or the starting signal for necessary renovation work. With modern measuring devices, the measurement can also be carried out by laypeople if they are familiar with the necessary basic criteria.

Preparations for a reliable measurement

The measuring device should be checked again for functionality before use. It is best to have familiarized yourself with the operation of the device in advance and to know how to hold and use it correctly.

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Measurement basics you need to know:

  • If possible, do not measure near cables, pipes or nails. These parts in the wall can falsify the measured values.
  • Take into account that all electrically conductive elements make the measurement inaccurate. This includes certain insulation materials and dissolved salts in the wall.
  • The measuring point must be cleaned thoroughly before the measurement.

You can recognize dissolved salts by the formation of salt crystals on the wall. They can be easily removed there. Use pliers to pull out nails and screws or dowels. It becomes more difficult to find possible disruptive factors that lie deeper in the wall.
For the most realistic result possible, measure at several points on the wall. You can create an even grid and measure and document the individual points.

Correct use of the moisture meter

The measuring device must not be carried on the body. The body heat disrupts the function of the device. The measuring device should only be touched and carried by the rubberized parts of the device. Before measuring, check whether the circuit board is dry. Temperature fluctuations in different rooms can cause condensation to form here. After entering a new measuring range, you should always wait a few minutes until the device has adjusted to the ambient temperature.
The measuring device is placed perpendicular to the surface of the gypsum plaster. The gypsum plaster is soft enough that the tips of the measuring device can be pushed in a few millimeters. After the measurement, carefully move the tips back out of the plaster. The ideal measuring points for the outer measuring areas are about ten centimeters away from the corners.

Tips & Tricks Easy-to-use moisture measuring devices are available in different qualities and price ranges from specialist retailers. Let yourself be thoroughly advised on the function of the device and the evaluation of the measurement results. The measured values can provide you with reliable information about the condition of the gypsum plaster wall.

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