Profile: Superior Profiles, Inc. produces extruded plastic products. We offer zipstrip control joint, keyway re-usable polyethylene strip, voidcap polystyrene expansion cap, polyfoam non-cross link flexible polyethylene foam, sill seal foam, double chamfer, heavy duty double chamfer and deckstrip expansion water stop. Our KeyWay is a re-usable polyethylene strip that is nailed to a form or header before pouring and is used to lock multiple on-grade slabs together in tilt-up buildings, industrial floors, curbs, and driveways.