Flexible paint for walls and ceilings
View Patent ↗Wall and ceiling acrylic latex coating compositions having properties that prevent joints between adjacent wallboard panels from cracking during settling of new homes and during transportation of manufactured buildings, and otherwise prevents joint cracking from flexing, such as caused by extreme weather conditions or building settling. In another embodiment, the coating compositions can be applied directly over joints between adjacent square-edged wallboard panels to conceal the joint without using tape, wallboard “mud”, or other joint filling compositions.
1. A wall or ceiling comprising a plurality of aligned support structures having outer, planar support surfaces that lie in a common plane, and a plurality of wall or ceiling panels, each having a planar outer surface, secured to the support structures, adjacent one another, to provide a planar wall or ceiling surface, each wall or ceiling panel having a squared outer edge adjacent to an outer edge of an adjacent panel to minimize space between said adjacent outer edges of said adjacent wall or ceiling panels; and
a coating composition, having a viscosity of at least 50,000 cps, comprising 10-15% by wt. water; 1-10% by wt. humectant; 0.01-5% by wt. dispersant; 30-50% by wt. calcium carbonate and 1-4% by wt. feldspar fillers having a particle size of about 5 μm to about 100 μm and 16-25% by weight acrylic polymer or acrylic copolymer, applied as a continuous coating over the wall or ceiling panels and over said space between adjacent panels to provide a continuous, planar outer surface coating on said wall or ceiling panels, without a visible joint between said adjacent panels after said coating composition has dried, and without applying a joint compound or tape over said space between said adjacent panels.
2. The wall or ceiling of claim 1 , wherein the wall or ceiling is a manufactured wall or a manufactured ceiling.
3. The manufactured wall or ceiling of claim 2 , wherein the coating composition further includes a thickener in an amount sufficient to provide the composition with a viscosity of 50,000 to 60,000 cps as measured by a Brookfield viscometer, spindle #7 @20 rpm.
4. The manufactured wall or ceiling of claim 3 , wherein the thickener is selected from the group consisting of a cellulose thickener, a clay thickener, a polymeric thickener, and a combination thereof.
5. The manufactured wall or ceiling of claim 1 , wherein the wall or ceiling panels are gypsum wall board panels.
6. The manufactured wall or ceiling of claim 1 , further including a solid filler having a particle size in the range of about 5 μm to about 100 μm to provide a textured surface to said coating composition after said coating composition is dry.
7. A method of manufacturing a wall or ceiling comprising:
securing a plurality of wall or ceiling panels, each having a planar outer surface, adjacent to each other on a support structure such that the outer surfaces of the adjacent wall or ceiling panels lie in the same plane; and
applying a continuous layer of a latex coating composition over the adjacent wall or ceiling panels, said coating composition comprising 10-15% by wt. water; 1-10% by wt. humectant; 0.01-5% by wt. dispersant; 30-50% by wt. calcium carbonate and 1-4% by wt. feldspar fillers having a particle size of about 5 μm to about 100 μm; and 16-25% by weight acrylic polymer or acrylic copolymer while covering spaces between said adjacent panels with said latex coating composition, to provide a continuous, planar outer surface on said wall or ceiling panels, without a visible joint between adjacent panels after said coating composition has dried, and without applying a joint compound or tape over said spaces between said adjacent panels.
8. The method of claim 7 , wherein the wall or ceiling is a manufactured wall or a manufactured ceiling.
9. The method of claim 8 , wherein the coating composition further includes a thickener in an amount sufficient to provide the composition with a viscosity of 50,000 to 60,000 cps as measured by a Brookfield viscometer, spindle #7@20 rpm.
10. The method of claim 9 , wherein the thickener is selected from the group consisting of a cellulose thickener, a clay thickener, a polymeric thickener, and a combination thereof.
11. The method of claim 7 , wherein the wall or ceiling panels are gypsum wall board panels.