original_query: What are the main uses of cement plaster and how is it applied to achieve a smooth surface on masonry interiors and exteriors? What is the most relevant chunk to answer the query?
query: What are the main uses of cement plaster and how is it applied to achieve a smooth surface on masonry interiors and exteriors?
answer: Cement plaster is used for masonry interiors and exteriors to achieve a smooth surface.  Interior surfaces sometimes receive a final layer of gypsum plaster. Walls constructed with stock bricks are normally plastered, while face brick walls are not. Various cement-based plasters are also used as proprietary spray fireproofing products.