With the mortar test, the resistance of organic layers against mortar can be assessed. Since mortar is alkaline, it must be tested whether the paint layer is damaged by exposure. For this method, a standardised mortar is prepared and applied to the surface. After 24 hours of storage under specified conditions, the exposed area is cleaned and inspected. The test is mainly required by specifications focused on construction and façades, e.g. Qualicoat, GSB and AAMA specifications, and is evaluated accordingly.
This test is part of the following manufacturer and requirement standards:
