What joints occur in screed work?

There are 3 types of joints that are respected in screed work. Expansion joints: Synonyms are movement joints and dilatation joints. These are joints for underfloor heating. Polyethylene joints (mousse) must be provided. Construction joints: Joints that occur when large floorboards are placed against each other. Profiles with a rubber joint are provided here to absorb the overtension. Large movements can occur. Shrink joints: Synonym for dummy joints in specifications. When there is no underfloor heating, and the rooms are larger than 50m², these have to be applied. It is enough to make a groove cut into the screed where the screed can crack with only minimum damage.