Custom concrete molds are made with Polytek liquid rubber. Mold material for concrete consist of large silicone cement molds that ease demolding of concrete elements. GFRC molds include reusable fiberglass sink molds for concrete countertop making. A concrete tabletop mould uses hard plastic edge moulds that break free once concrete is hard. Latex molds can be used for statuary molds. Custom silicone molds for concrete can be used to make concrete coasters or concrete stepping stones.