Tidewater Block is a family-owned manufacturer and distributor of standard gray concrete masonry units (CMUs) in a variety of shapes and sizes designed to meet any requirement. Our concrete block is manufactured with high-quality aggregates and meets or exceeds ASTM-C90 specifications for load-bearing concrete units. Tidewater Block regularly conducts independent testing to ensure compliance with this ASTM standard and is a concrete masonry supplier serving clients throughout the Chesapeake region, including Williamsburg, Virginia Beach, Newport News, Suffolk, Chesapeake, and Norfolk.