XPERT Surface-Set is a solution of concrete retarding chemicals and conditioners.  Applied to fresh concrete, it inhibits the setting of the very top surface layer of concrete while the remainder of the concrete cures normally.  After the concrete sets, the top mortar level is removed with high-pressure water to reveal beautifully textured, exposed aggregate surfaces. Concrete washing with high pressure water should normally take place within 8 to 24 hours. Used on the upper surface of horizontal cast-in place concrete, XPERT Surface-Set adds a decorative, rough textured, non-slip surface to patios, sidewalks, ramps, pool aprons and steps. When used on precast or tilt-up, XPERT Surface-Set brings rugged, natural elegance to panels, walls or other architectural pieces.