KEY #715 is a 100% solids, paste consistency epoxy crack filler used to line, patch or repair floor and wall surfaces. Key #715 is the ideal material for repair of surfaces damaged from environmental or chemical attack. Key #715 can also be used as a base material beneath coating, slurry or mortar systems to repair defects in the concrete before application of the flooring system. Key #715 is also available in a fast cure formulation.