The second step is called polishing, this is where the plaster is sprayed or brushed with a light film of water and then polished down with a trowel or sponge to produce a smooth finish. As of May 2011 the cost of materials for a single layer of plaster skim are between 50-75p per m 2.he second step is called polishing, this is where the plaster is sprayed or brushed with a light film of water and then polished down with a trowel or sponge to produce a smooth finish. As of May 2011 the cost of materials for a single layer of plaster skim are between 50-75p per m 2.
Required length of work term. 1  Work terms must consist of full-time employment (35-40 hours per week) for 16 weeks (matching the length of a four-month academic term). Work terms generally start and end on the dates published in Quest, under Important Dates.
Article published by the Bureau of Labor Statistics stating that the weekly earnings of workers who work an extended workweek (between 45 and 99 hours) earn at least 32% more money than those who work a standard workweek (between 35 and 44 hours).