The third and final coat of plaster applied to a surface, consisting of a fine, white, lime-based mixture, laid on to a depth of about one-eighth of an inch (approx. 0.3 cm).
Origin
Early 19th century.
Definition of hard finish in US English:
hard finish
noun
Plastering historical
The third and final coat of plaster applied to a surface, consisting of a fine, white, lime-based mixture, laid on to a depth of about one-eighth of an inch (approx. 0.3 cm).