Residual moisture refers to the amount of water that remains in a material after it has been dried. This can be important for many materials such as wood, concrete or plaster.

Excessive residual moisture can cause the material to change shape, shrink or crack. In some cases, mold or rot can even occur.

The residual moisture of parts to be joined also plays an important role in adhesive technology. This can lead to a reduction or loss of the joining quality or, in the case of moisture-curing adhesives, to accelerated curing. It is always important to know how the adhesive used reacts to the residual moisture of the material to be joined in order to achieve the most ideal joining conditions.