Skimming a wall, also known as skim coating, is the process of applying a thin layer of drywall joint compound or plaster to a wall to create a smooth and even surface. This technique is used to repair damage, improve the appearance of a wall, or prepare it for painting or re-texturing. Skim coating can be done by hand, using a trowel or drywall knife, or with a paint roller or spray rig. The process usually involves applying at least two coats of joint compound or plaster, allowing each coat to dry before applying the next. Skim coating is a relatively easy task that even novice drywall workers can add to their arsenal. It requires some basic tools such as a mud pan, taping knife, sanding pole, and safety glasses, as well as materials such as drywall compound, primer, and masking tape. Skim coating can be used to repair damage caused by wallpaper removal, drywall repairs, or years of wear and tear from residents and pets. It can also be used to cover up an unappealing or outdated wall/ceiling texture.