EZ, 40 lb. Sand is a mixture of sand and special additives that hardens with moisture for paving stone joints. Polymer fortified to lock joint sand in place. Engineered to resist wind, rain, freezing conditions, and substrate movement without washing away. Blocks weed growth and resists insect penetration in joints. For best results, apply with funnel or bag to insert EZ Sand directly into joints. Remove all excess EZ Sand from surface of project before wetting to prevent staining. Coverage: 40 Lb. pail will cover 30 to 45 Sq. Ft. for joints 1/4 In. wide and 2 In. deep. Coverage varies with the depth and size of the pavers.