Finish Coat
From Roofing, Solar Power, and Spray Foam Insulation Wiki
Finish Coat
The last coat applied in plastering intended as a base for further decorating or as a final decorative surface. finish coat usually consists of calcified gypsum, lime and sometimes an aggregate. some may require the addition of lime or sand on the job. the three basic methods of applying it are (1) trowel (2) flat and (3) spray.