BACKGROUND 30 Hudson Yards is the tallest of the towers on the Hudson Yards megaproject currently being constructed in New York City’s west side. As part of the largest private real estate development in the history of the United States, 30 Hudson Yards will encapsulate 2.6 million ft2 (241,500 m2), rise over 1,300 ft (400 m) high, and feature tenants like Time Warner Cable (Charter Cable Company) and Wells Fargo. With 30 Hudson Yards anticipating fortune 500 companies, the need to build a structure that is as functional as it is stunning was important. The building would have a below grade foundation which would be subject to possible water penetration and flooding. This required a concrete waterproofing system that could fully tank the structure for the entirety of its service life. Kohn Pedersen Fox (KPF) Associates Architecture firm has a world renowned reputation for using the best products possible in all of their designs. SOLUTION Kohn Pedersen Fox (KPF) Associates recommended the use of Kryton’s crystalline admixture, Krystol Internal MembraneTM (KIM®), a decision supported by the Building Envelope Consultant, Wiss, Janney, Elstner Associates, Inc. KIM was used to waterproof the foundation base slab, elevator pits, and flood retention tank under the tower. In order to ensure the construction joints and penetrations are watertight, Krystol® Waterstop System (KWS) was used. Krystol T1® & T2® was applied to the pre- existing foundation walls of 30 Hudson Yards, the Retail Podium’s foundation walls and slab, and the machine room. The use of Kryton’s concrete waterproofing systems, as well as the consultation, site-support, and superior customer service Greg Maugeri of Dry Concrete, LLC provided ensured the success of the project. As of writing, 30 Hudson Yards is set to welcome Time Warner Cable, Wells Fargo, and many other tenants for the end of 2019.