Skin coat putty with fine Plaster effect, for exteriors and interiors Use F 263A can be used both in interiors and exteriors, as a white filler-undercoat. For these reasons it is especially suitable for smoothing over small imperfections on masonry substrates, giving an appearance similar to float-finished plaster/render (fine).On Smooth substrates such as Plasterboard, it is the ideal undercoat for providing a roughened surface and prepare the substrate for coatings with an antique appearance. Supply Containers of approx. 14 l and 5 lTints: white