The marble floor tile replacement project took place from February to July 2020. Since the floor tile was restored in the 1980s, damage from wear-and-tear and removal of the Center Café and fountains in the Main Hall necessitated repairs.

The original marble quarry, which was the source of the 1980s tile, was depleted. However, a nearly indistinguishable marble was identified in the Danby Quarry in Vermont.

Stained and cracked tiles throughout the Main Hall and West Hall, as well as in the vestibules, were replaced and all the marble flooring was polished. This work was undertaken by Promacs LLC, R. Bratti Associates, and LSR Refinishing.