Sika Corporation has made a minority investment in Florence, Alabama-based Schönox HPS North America, Inc. The investment positions Schönox as Sika’s premium brand in the repair, self-leveling and overall floor prep category and will accelerate Sika’s growth in the U.S. floor covering market and positions.The Schönox brand, which is focused on innovative solutions for flooring professionals and top contracting firms, continues its expansion across the North American market.