This newly engineered grouting compound repairs and strengthens rubberized surfacing systems, and has been tested to withstand even the most extreme conditions. Tired of repairs to loose and granulated rubber in high-wear areas such as underneath swings or at slide exits? Installing a new pad and just want to make sure you don't have to deal with that inevitable hassle? FlexGrout is the perfect option for use in high-wear areas. The grouting compound works itself deep into the core of the rubber in order to reinforce the strength of the pad in areas subject to the most use and abuse. Even thousands of little feet are no match for FlexGrout!