Abstract: A coating composition for in-situ coating of a surface comprises calcium carbonate, an acrylic or vinylacetate-based binder, a thickening agent, and a rheology modifier, the weight ratio of the calcium carbonate to acrylic-based binder being from 5:1 to 15:1. The coating may be applied directly to a plasterboard wall or ceiling using a roller technique and provides a high quality surface finish to which a paint may be applied directly.

Abstract: A coating system for in-situ coating of a surface formed by a plurality of plasterboard sections comprises a dry powder composition which is dispersible in an aqueous applicator medium and provides a very high quality surface finish to which gloss or matt paint may be applied directly without joint photographing or show-through of fasteners. The coating composition may be applied by a spray coating technique or a roller technique. The dry powder composition comprises calcium carbonate and, by weight, relative to calcium carbonate, from 4% to 11% of a polymeric binder, from 0.60% to 1.5% of a thickening agent and from 0.10% to 0.35% of a surfactant.

Abstract: A coating system for in-situ coating of a surface formed by a plurality of plasterboard sections comprises a dry powder composition which is dispersible in an aqueous applicator medium and provides a very high quality surface finish to which gloss or matt paint may be applied directly without joint photographing or show-through of fasteners. The coating composition may be applied by a spray coating technique or a roller technique. The dry powder composition comprises calcium carbonate and, by weight, relative to calcium carbonate, from 4% to 11% of a polymeric binder, from 0.60% to 1.5% of a thickening agent and from 0.10% to 0.35% of a surfactant.

Abstract: A coating system for in-situ coating of a surface formed by a plurality of plasterboard sections comprises a dry powder composition which is dispersible in an aqueous applicator medium and provides a very high quality surface finish to which gloss or matt paint may be applied directly without joint photographing or show-through of fasteners. The coating composition may be applied by a spray coating technique or a roller technique. The dry powder composition comprises calcium carbonate and, by weight, relative to calcium carbonate, from 4% to 11% of a polymeric binder, from 0.60% to 1.5% of a thickening agent and from 0.10% to 0.35% of a surfactant.

Abstract: An underground storage tank 1 is lined in situ by first clearing the inner surface of the tank using water jetting. The surface is then inspected and grit blasted. A corrosion barrier coating 16 in the form of glassflake epoxy resin is applied to a minimum dry film thickness of 1000 microns. An adhesive is applied to the barrier coating 16 and sheets of an HDPE interstitial grid 10 are bonded to the adhesive forming an air gap of about 5 mm. A pliable glass reinforced plastic layer 15 is laid upon the grid 10. The GRP material is exposed to UV lamps to form an impermeable shell within the tank. A surface coating layer 2 may be applied. A leak detector 40, 41 is installed in the interstitial space defined by the grid 10.

Abstract: A coating system for in-situ coating of a surface formed by a plurality of plasterboard sections comprises a dry powder composition which is dispersible in an aqueous applicator medium and provides a very high quality surface finish to which gloss or matt paint may be applied directly without joint photographing or show-through of fasteners. The coating composition may be applied by a spray coating technique or a roller technique. The dry powder composition comprises calcium carbonate and, by weight, relative to calcium carbonate, from 4% to 11% of a polymeric binder, from 0.60% to 1.5% of a thickening agent and from 0.10% to 0.35% of a surfactant.