Spray Applied Tunnel Waterproofing Solves Major Challenges in NYC Subway Tunnel

Port Authority of New York & New Jersey Uses Spray Applied Waterproofing in NYC Subway Tunnel

As part of the World Trade Center reconstruction effort, the Port Authority of New York & New Jersey Turned to Spray Applied Waterproofing for the Cortlandt Street #1 Line Tunnel project.

Watch this NEW VIDEO to learn about the challenges they faced and why cold spray applied waterproofing membrane called BDM™ was the only feasible solution.

1. Challenge #1: The top of the structure had an existing sheet membrane and drainage board system that the BDM spray applied waterproofing needed to be tied into.
2. Challenge #2: The surface profile on the vertical walls was extremely aggressive, with some areas exceeding 1-2 inches. There were also numerous penetrations, including bolts and pipes that needed to be completely waterproofed.
3. Challenge #3: There were multiple substrate types including concrete, steel, and existing waterproofing membrane that needed to be coated.

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