High strength contractor grade pre-blended mortar mix. Mason mix contains properly graded masonry sand and requires only the addition of water. Use for non-structural masonry applications above and below grade, walls, columns, brick/stone veneers and tuck pointing. Properly graded sand blended with masonry cement type S for use on structural and non-structural masonry applications above and below grade. Use for structural and non-structural masonry applications above and below grade. Used to lay brick, masonry units and stone. Each 80-lb bag will lay up to 37 standard bricks or 13 standard 8 x 8 x 16 blocks. Pre-blended, just add water.