How to Skim Coat Concrete Walls. Skim-coating is the process of applying a thin layer of material, such as wpc, over a wall to . The procedure implemented to skim-coat a wpc wall is strht forward and easy to follow. .
Skim coating can freshen up old concrete blocks and give your home or a wall on your property a new look. The process involves applying a layer of cement over the concrete block wall to cover grout lines or stains and give the surface a smooth appearance.