Abstract: A method of making a concrete panel board is provided. The method includes the steps of: (a) providing a substrate; (b) applying a primer layer to the substrate; (c) drying the board after step b; (d) applying a thinset mortar layer to the primer layer; (e) drying the board after step d; (f) applying a plaster layer to the thinset mortar layer; (g) drying the board after step f; and (h) applying a sealant layer to the plaster layer.
Abstract: A concrete panel board is provided. The panel board includes: a substrate board; a primer layer applied to the substrate; a thinset mortar layer applied to the primer layer; a plaster layer applied to the thinset mortar layer; and a sealant layer applied to the plaster layer.