Waterproofing Company in New York, NY
Kay Waterproofing is a local New York contractor helping homeowners and property managers keep basements, foundations, and walls dry. Based in Harlem, we serve buildings across Upper Manhattan and the greater NYC area.
What We Do
Practical waterproofing work for New York homes, brownstones, and commercial buildings — done by a small local crew that shows up on time.
Basement Waterproofing
Interior and exterior solutions to stop water at the source and keep your basement usable year-round.
Wall & Foundation
Crack repair, membrane application, and exterior coatings for foundation and below-grade walls.
Leak Prevention & Moisture Control
Find the cause of seepage, dampness, or musty smells, and put a real fix in place — not a patch.
Why Choose Kay Waterproofing
- Local Harlem-based crew
- Free, no-pressure estimates
- Honest assessments, no upselling
- Residential & commercial work
- Clean, respectful job sites
- Clear written scope before we start
Service Area
We work primarily in Harlem and across Upper Manhattan, and we take projects throughout New York City when the scope is right. If you’re not sure whether your building is in our area, give us a call — we’re happy to talk it through.
Have water in your basement?
Talk to a real person about your situation — no obligation.
Call (212) 348-3300Contact
- Address211 E 123rd St, New York, NY 10035
- Phone(212) 348-3300
- Emailinfo@kaywaterproofing.space
- HoursMon–Fri 8am–6pm · Sat 9am–2pm · Sun closed
Serving Harlem & NYC
From brownstones in Harlem to apartment buildings across Upper Manhattan, we focus on durable waterproofing that holds up to New York weather and old-building quirks.
If you’re seeing water stains, peeling paint near the floor, white powder on basement walls, or mildew smells, it’s worth getting it looked at sooner rather than later.