Roadware MatchCreteâ¢ Clear (MCC) is a two component aliphatic polyurethane for repairing cracks, spalls, and joints in concrete subject to UV exposure from sunlight. This material is clear in appearance when applied and cured. Colored sand and pigments may be added to create color stable repairs that match most any decorative style or shade of concrete surface. MCC will not significantly change color with exposure to sunlight over time. Use for repairing floor imperfections prior to concrete polishing or repairing damaged polished concrete. A dual cartridge gun is required to use this material.