Plaster finish on interiors can be either float and set or just a skim plaster finish. A float and set finish requires a base coat plaster or sand and cement, with a skim coat of finish plaster on top, to give a smooth finish ready for decoration.

Float and set can be used to take out slight discrepancies along a wall ending up with a smooth even finish. Finish plaster can also be used direct on to any plasterboard installation generally applied at 2 to 3mm thick to give a finish ready to take decoration.