Plastering and Skimming Posted on May 25, 2016 by Bianca Posted in Plastering We were asked to plaster and skim the outhouse and square up the stairs, as well as plaster the inside of the boundary wall. Painting will follow to complete the job. Beginning to plaster. Plastering and squaring up the stairs. Just paint needed to complete the job. Plastering the boundary wall. Boundary wall ready for paint.