MVIS Premium Pointing Mortar Base from Laticrete can be used for a variety of exterior and interior projects, including glazed thin brick, glazed block, porcelain pavers, and hardscapes, with joints up to 1/2 inch wide. Color is added via a dispersible dry pigment pack, which is available in 40 standard color options. According to the manufacturer, fiber reinforcement in the mortar resists cracking and powdering, and Microban antimicrobial technology resists the growth of mold and mildew. A 50-pound bag retails for $28. Custom color matching is also available.