| 摘要 |
A facing for a wall or similar surface, primarily for anti-graffiti purposes, is provided by firstly the application to the surface to be faced of a layer of a primer and sealing coating composition containing a proportion of aggregate material such as china clay and a resin bonding agent. This first layer seals the surface and provides an adhesive exposed surface for receiving a further coating composition, e.g., in paste form. The further coating composition comprises an aqueous mixture of setting and filler materials such as gypsum and china clay, respectively, a resin binder, a hardening and strengthening constituent such as mica and a water-soluble coloring dye. On setting, the further coating composition provides a hard indentation-resistant surface, but prior to setting, the exposed surface thereof is textured to provide a relief preferably a patterned relief. A finish coating of cellulose-based paint is then applied to this textured surface to provide a textured final surface of the facing which can be over-sprayed by the same kind of paint to obliterate graffiti on the textured final surface caused by the application thereto of aerosol spray paint. The color of the water-soluble coloring dye used in the further coating composition is chosen so that the further coating composition is substantially the same color as the color of the finish coating of cellulose-based paint.
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