The phrase "a layer of plaster" is correct and usable in written English.
It can be used when describing a coating or application of plaster on a surface, such as walls or ceilings.
Example: "After the walls were prepared, the contractor applied a layer of plaster to create a smooth finish."
Alternatives: "a coat of plaster" or "a film of plaster".
High above the City Council chambers in City Hall on Thursday, Bertram Abdul spread a layer of plaster under the image of an eagle on the ceiling, finessing the edges to look like frosting on a cake.
In decorating these surfaces, reliefs were carved into the stone or, if the stone was too poor-quality to carve, a layer of plaster that covered the stone surface.
When the pin is removed and the small doors opened, there is now nothing to see but "a flat layer of plaster, with a sheet of nineteenth-century paper or vellum in front of it".
Throughout the ordeal of this undertaking the house was in constant upheaval, a mess, in other words, where a thin layer of plaster dust touched every surface - including my clothes.
He glides along the tiles, which are covered by a silt layer of plaster dust from one of his sculptures in progress.
Less intrusive is the stacco method; a thicker layer of plaster is retained along with the fresco and is smoothed flat on its back surface before the composite rigid layer is mounted to a prepared support.
The structures at Zaculeu were grouped around small plazas and were generally built from masonry, coated with a thick layer of plaster.
F. candida (white springtail) were raised at room temperature in plastic containers with a thin layer of plaster mixed with charcoal.
The structure can be rebuilt using normal cement, but a 10mm layer of plaster using sulphate resistant cement should be added to all surfaces.
Sterile sheet wadding is wound thickly over the foot and leg, bandaged snugly, and covered with a light layer of plaster of Paris, reinforced on back of leg and bottom of foot with a 2-inch moulded plaster "rope" or splint.
