Quikrete® Hardscapes polymeric jointing sand is a polymer-modified graded sand for filling joints up to 2 in wide between interlocking pavers, brick, natural stone and concrete slabs. Simply sweep the sand into the joints and saturate with a water mist. The polymer modified sand hardens as it dries and resists erosion, weed growth and insects. Hardscapes polymeric jointing sand's advanced, heavy-duty formula is ideal for high traffic areas in commercial and residential applications.