American Museum of Natural History
Bank of New York
Cathedral of St. John 
Chrysler Building 
City Hall
Columbia University
Cooper Union
Federal Reserve
First Congregational
First Presbyterian
General Theological Seminary
Guggenheim Museum
Holy Trinity
Knox Building
Lord & Burnham
Metropolitan Museum
Mt. Vernon
NY Public Library
New York Life
Plaza Hotel
Rockefeller Univ.
Rodin Studios
St. Michael's Church
UN Fountain
University Club

Location: New York City
Description: Plaza and fountain waterproofing
Types of work: Siplast, plazas, fountains, waterproofing

Images: (click on each photo for a larger view)


Details: In a continuation of our 75 year relationship with Rockefeller University, Nicholson & Galloway was retained to waterproof the new Peggy Rockefeller Memorial Plaza and Fountain.

Working in a very constricted site and under an intense schedule, Nicholson & Galloway scarified approximately 3,000 square feet of original waterproofing to clean concrete and proceeded to install over 25,000 square feet of Siplast’s Terranap Waterproofing System on the flat areas and over 5,000 square feet of flashings on vertical surfaces.

The waterproofing of the Plaza included coordination and flashing of three-hundred electrical, plumbing and HVAC penetrations.

At the completion of each area of the Plaza waterproofing, dams were installed and forty-eight hour flood tests were performed to confirm the quality of the work.

Upon completion of the project, the Owner was provided with a Twenty Year Labor and Material Warranty. As always, all work was supervised and performed by Nicholson & Galloway’s own personnel.

  Nicholson & Galloway, Inc.  •  261 Glen Head Road, Glen Head, NY 11545  •  (516) 671-3900  •  (212) 685-6677
© 2014 All Rights Reserved.