KEY MMA ELASTOMERIC DECKING is a 100% reactive, rapidly curing methyl methacrylate (MMA) decking system. This system is composed of 100% MMA elastomeric base coat resins, decorative colored quartz aggregate or silica aggregate, and clear or pigmented MMA top coats. Installed thickness is 3/16 inch to 1/4 inch depending on intended service and project requirements.