FEATURE: MAPEI helps restore and repair historic Hugh L. Carey/Brooklyn-Battery Tunnel tunnel and the removal process required extensive repairs includ- ing 800,000 tile replacements and additional enhancements to prevent future disaster. MAPEI solutions help repair and restore the tunnel Gibraltar Contracting, the tile contractor on the Brooklyn-Battery Tunnel project, was asked to float a new mortar bed and install 400,000 sq. ft. (37 161 m2 ) of 6˝ x 6˝ (15 x 15 cm) Agrob Buchtal “Chroma” façade tiles across walls 15 feet high (4,57 m) of the 1.73 miles (2,78 km) of the Manhattan- to-Brooklyn side of the tunnel in the first phase of the restoration work. The Chroma tiles offer easier cleaning, as well as diffuse light for motorists. These tiles also act as a fire-retardant, providing a protec- tive coating for the tunnel in the Preparing the installation bed with MAPEI’s Modified Mortar Bed. Installing tiles with MAPEI’s Ultraflex 3. 38 TileLetter | September 2018