How Do You Plaster A Concrete Wall?
Applying plaster to a concrete wall can change its appearance, level it, make it more moisture-resistant and give you the opportunity to add texture. Plastering a concrete wall takes time. You will have to prepare the wall and allow for curing and drying time between applications of plaster. A poorly-prepared surface will eventually crack and sag and the plaster will come off the wall. Old paint, dirt, mold and mildew all create problems. Prepare the concrete wall. If the wall has been painted and the paint is peeling or flaking, all of the paint has to be removed. The easiest way to do this is to have the wall sandblasted. Install metal lath over the painted concrete wall if you don’t want to sandblast. Use 7/8-inch concrete screws with washers spaced 12 inches apart to attach the lath to the wall. Caulk any cracks and treat mold and mildew by first killing the mold and then removing any stains left by the mold. Clean mortar joints with a wire brush. Use a bonding agent on painted wal
