Cantera Vertical Wall Mix is a polymer modified, cementitious overlay formulated for resurfacing structurally sound, non-moving vertical surfaces including concrete, drywall, cement board, plywood and masonry. It is a lightweight and sag resistant material, which can be applied to interior or exterior surfaces. Cantera™ Vertical Wall Mix provides a workable consistency suitable for stamping with Butterfield Color® Vertical Stamping Tools or creatively carving or sculpting by hand. Once cured, Cantera™ Vertical Wall Mix creates a durable and natural looking stone finish that is weather and freeze/ thaw resistant.