GREENTECH WALL SKIM CPL-560 is a ready-mixed skim coat as thin and final coat on wall and ceiling, or on plastering substrates.  It is a water resistant skim coat which can be used in dry or wet interior areas to receive paint. It can be applied by hand on concrete, lightweight concrete, blockwork and rendered substrates but not on painted surfaces. Sanding the surface with using extra-fine sand paper in order to get the further smoothest surface.