of the existing crack any material which can fill the crack completely and securely yet remain flexible to accommodate expansion and contraction when exposed to changes in temperature and moisture and which also is waterproof is within the scope of the invention in one preferred embodiment a flexible polyurethane foam product such as u201c great stuff u201d manufactured by dow chemical company is introduced into the cleaned crack as the flexible sealant material sufficient flexible sealant material should be utilized to fill the crack completely up to the level of the surrounding recreational court after application the surface of the recreational court should be leveled prior to the complete drying and curing of the sealant material after the crack is filled and the crack filling material has been allowed to dry and cure a laminate is applied to cover completely the crack and the surrounding recreational court or surface regardless of whether a flexible sealant is used it is important that the laminate be flexible to expand and contract with the expansion and contraction of the court if the crack filling material is a sealant material which is flexible and thus can expand or contract depending on the temperature it is especially important that this laminate also be flexible to permit expansion and contraction with changes in weather conditions especially temperature the laminate is preferably formed from an adhesive material preferably waterproof applied to a flexible fabric material the adhesive material is preferably a waterproof adhesive which will tightly secure the laminate to the recreational court and.