Abstract: The present invention relates to a polymeric cove base support for installation where flooring meets a wall, comprising extruded straight portions and molded exterior corner and end portions. The cove base support comprises an upper wall portion, a lower toe portion and an intermediate curved or concave cove. The wall portion is substantially perpendicular to the toe portion. The curved cove comprises an outer cove surface for facing the wall-floor interface and a spaced apart inner curved cove surface facing the room when installed. The spacing between the two curved coves for the straight portion creates an open area, where the open area includes a supporting or reinforcing bar juxtaposed between the curves, preferably positioned perpendicular between the two curve coves in the center region of the open area, and extending the length of the cove base.