Building Strong Foundations Across New York City

Helping property owners with their projects, solving issues efficiently, and delivering dependable, high-quality construction service.

Licensed Contractors for Waterproofing in NYC

Sky Grid Group NY delivers professional waterproofing services for homes and buildings across the five boroughs, stopping leaks before they turn into structural problems. As experienced building waterproofing contractors, we handle everything from basement and foundation waterproofing to exterior membrane waterproofing, backed by free estimates and code-compliant work.

Services

Waterproofing Services We Provide

Basement waterproofing sealing walls against seepage and flooding

Basement Waterproofing

Sealing basement walls and floors against seepage, flooding, and rising moisture.

Foundation waterproofing system protecting below-grade walls

Foundation Waterproofing

Protecting foundation walls with premium waterproofing systems built for NYC's older housing stock.

Exterior below-grade membrane waterproofing installation

Exterior Membrane Waterproofing

Installing below-grade membrane systems that stop water at the source before it reaches interior walls.

Interior waterproofing drainage and sealant system

Interior Waterproofing Systems

Drainage and sealant solutions for properties where exterior excavation isn't practical or accessible.

Commercial building waterproofing on a plaza deck structure

Commercial Building Waterproofing

Plaza decks, parking structures, and below-grade commercial spaces are protected against water intrusion.

Crack injection and leak sealing on a concrete foundation wall

Crack Injection & Leak Sealing

Epoxy and polyurethane injection for active leaks and hairline foundation cracks.

30+

Work Experience

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About Us

Waterproofing New York Property Owners Trust

Sky Grid Group NY has built a reputation as one of the leading waterproofing companies in New York. Property owners call on us first, thanks to our trained crews and proven materials and methods. As residential waterproofing contractors, we work on brownstones, rowhouses, and single-family homes throughout the boroughs, while our commercial division handles larger buildings with plaza decks, below-grade parking, and occupied structures that can't afford downtime.

  • Licensed and insured professionals
  • NYC code-compliant waterproofing systems
  • Free inspection and estimates
  • Interior and exterior solutions for every property type

Stop Water Damage Before It Spreads.

Water intrusion doesn't wait, and neither should you. Mold, foundation cracks, and structural decay all start with a leak that goes unaddressed. Contact Sky Grid Group NY for professional waterproofing services, free estimates, and hassle-free permit handling across every borough.

Why Choose Us

Reliable Waterproofing for Every NYC Property

At Sky Grid Group, each waterproofing project is completed with careful site diagnosis, proven materials like below-grade membrane systems and hydraulic cement, and expert craftsmanship. We install waterproofing that withstands NYC's freeze-thaw cycles, heavy rain, and aging foundations, while tailoring interior and exterior solutions to your property.

How Building Waterproofing Keeps Your Building Safe

Water is one of the most damaging forces an NYC building faces, since freeze-thaw cycles, heavy rain, and aging below-grade construction all create pathways for moisture to get in. Proper building waterproofing keeps foundations dry, prevents mold and mildew growth, protects structural steel and masonry from corrosion, and stops small leaks from turning into five- and six-figure structural repairs.

Trusted NYC Waterproofing Experts

Property owners rely on us because we provide free estimates, manage required permits, and diagnose the actual source of water intrusion rather than just patching symptoms. Our professional waterproofing services combine durability, code compliance, and long-term protection with no hidden fees.

Experienced Team You Can Count On

Our licensed and insured team brings hands-on NYC experience in basement and foundation waterproofing, exterior membrane systems, and interior drainage solutions. You can trust us to manage your project efficiently, safely, and with lasting results.

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Faqs

Helpful Waterproofing Answers

Yes, Sky Grid Group NY manages all necessary NYC permits so your waterproofing project meets code and passes inspection without delays.
Most interior waterproofing jobs are completed in a few days. Exterior membrane waterproofing that requires excavation can take one to two weeks depending on scope and site access.
Interior waterproofing manages water after it enters, using drainage systems and sealants. Exterior membrane waterproofing stops water before it reaches your walls but requires excavation and is a larger project.
Cost depends on whether you need interior sealing, exterior membrane work, or a full drainage system, plus your property's size and accessibility. Basement waterproofing in NYC generally runs ~$3,000–$8,000 for interior work and higher for exterior membrane/excavation.
Yes, Sky Grid Group NY is fully licensed and insured, so every waterproofing project is safe, compliant, and professionally managed.
Yes, we offer free, no-obligation estimates so you understand cost, timeline, and scope before work begins. During your free estimate, we walk your property through our basement waterproofing cost calculator so you get an exact number instead of a rough range.
Yes. As both residential waterproofing contractors and commercial specialists, we handle everything from single-family basements to multi-unit buildings and plaza decks.