SPEC MIX® Portland Lime & Sand masonry mortar is a dry preblended mortar mix containing Portland cement, hydrated lime and dried masonry sand formulated for superior bond, water retention and board life. SPEC MIX Portland Lime & Sand is available in standard or custom colors. In addition, custom mix designs are available for specific applications or properties, the standard Portland Lime & Sand mortar is designed to be compatible with the characteristics of the specified masonry unit.