Sakrete 65306217 Topping & Bedding Sand Mix, 60 LbFor overlaying concrete & as a bedding mix & joint grout for flagstone, slate or brick walkways & patios. It can be used as a "sweep in" joint filler for paving units. For applications 1 2" to 2" in thickness. 60 lbs Use as a bedding mix and joint grout for flagstone, slate and brick walkways Use as a topping mix to rejuvenate damaged concrete surfaces Can be applied in layers ranging from 1 2 to 2" Exceeds strength requirement of ASTM C 387 Just add