rough coat
rough coat — noun
1. the very first layer of paint, plaster, or a similar covering material that is s
the very first layer of paint, plaster, or a similar covering material that is spread onto a surface such as a wall or ceiling, forming the base for any layers that come after it
Eve applied a rough coat of white paint to the living room walls before adding the final colour.
rough coat + of + [material]
Henry checked the rough coat for cracks before his team began finishing the plaster.
Aarav said the rough coat needs at least six hours to dry before the next layer goes on.
Folake watched the plasterer spread a rough coat of grey render across the outside wall.
- base coat
more general term, used for paint as well as plaster
- first coat
more literal and beginner-friendly synonym
- scratch coat
specifically the first coat of plaster that is scratched to help the next coat stick
- finish coat
the final smooth layer applied after the rough coat
- top coat
the last layer of paint or varnish
文法句型
rough coat + of + material
用法筆記
This term is used mainly in building and decorating. The rough coat is not meant to look neat — it is a base for the final smooth layer.
rough coat — verb
- rough coatpresent simple I / you / we / they
- roughs coat3rd person singular
- roughing coat-ing form
- roughed coatpast simple
1. to put the first layer of plaster onto a wall or onto the wooden strips (laths)
to put the first layer of plaster onto a wall or onto the wooden strips (laths) that support it, as the starting step of plastering that surface
The workers rough-coated the new classroom walls before the plaster dried out.
transitive: rough-coat + wall/surface
Asher learned how to rough-coat a lath wall during his first week on the building site.
Yuki rough-coated the bathroom ceiling after removing the old tiles.
The contractor asked Rania to rough-coat the extension before the weekend.
The old pantry walls were rough-coated years ago and still need a finish layer.
- apply a rough coat to
a longer, more explicit phrase, useful for learners
- base-coat
more general, not limited to plaster
文法句型
rough-coat + [surface]
be rough-coated
用法筆記
Frequently used in the passive voice (e.g. 'the wall was rough-coated'). The hyphenated form 'rough-coat' is common in manuals and instructions.