Waterproofing Contractors in NYC for Homes & Businesses

Protect your home or business from leaks and dampness with waterproofing services across NYC. We inspect basements, roofs, foundations and interior spaces, explain the problem and recommend work suited to your property. Book a free site check to get a written quote and a clear plan.

AI-generated illustration of a technician checking a damp basement wall with a moisture meter

Your property. A clear plan.

Understand the Leak Before You Start Repairs

Water coming back after rain? Damp walls or ceiling stains? Our NYC waterproofing team checks the affected area and looks for possible entry points, so you can understand what may be causing the problem.

Your free site check comes with a clear explanation of suitable repairs. We provide a written quote covering the work, materials and expected schedule. Ask questions, review the plan and decide when you are ready.

  • Free site check
  • Written quote
  • Work explained first
Arrange a Free Site Check

Waterproofing Services We Offer in NYC

We offer many types of waterproofing. Each service is made to match the space and the problem. Here are the main services we provide:

Basement waterproofing work showing sealed walls and sump pump installation in NYC.

Basement Waterproofing

If water enters your basement, we can fix it. We seal the walls and floor. We add a sump pump if needed. We use drains to keep water away. We also stop leaks through cracks or weak spots. Your basement will stay dry, even during heavy rain.

Commercial waterproofing work with membrane installation at a large building site.

Foundation Waterproofing

Water near your foundation can cause cracks or sinking. We seal the outside walls and install drain systems. We protect the base of your home or building from damage. This helps it stay strong and last longer.

Crawl space waterproofing with vapor barrier installation and moisture control setup.

Roof Waterproofing

Rain and snow can wear down your roof. We apply roof coatings and membranes. These seal the surface and stop leaks. We fix damaged spots and protect flat or sloped roofs. Our work keeps water out and extends your roof’s life.

Waterproofing team sealing a crawl space area, cleaning floors, and preparing the space to prevent moisture and mold.

Crawl Space and Interior Waterproofing

Wet crawl spaces cause mold and bad air. We seal crawl spaces with vapor barriers. We also install vents, drains, and fans. We fix interior leaks and seal the floors. This helps keep your home dry from underneath.

Bathroom and kitchen waterproofing with floor sealing and leak protection work.

Bathroom and Kitchen Waterproofing

Bathrooms and kitchens use lots of water. If the tile or floor leaks, we seal it. We use safe sealants around tubs, sinks, and toilets. We stop water from seeping into walls or below the surface.

Commercial waterproofing work for large buildings in NYC, including roof and exterior wall sealing.

Commercial Waterproofing

We help offices, stores, schools, and large buildings. We seal roofs, basements, walls, and decks. We use strong coatings like TPO, EPDM, and liquid membranes. Our team works with your schedule and keeps the area clean.

Contractor applying waterproof membrane on exterior foundation wall to prevent water intrusion in NYC property.

Other Waterproofing Work We Do

We include these services in one simple package. Call us to ask about your space.

How We Work

We tell you if anything changes. We also give tips to keep your space dry in the future.

Waterproofing team sealing a crawl space area, cleaning floors, and preparing the space to prevent moisture and mold.

Free Site Check and Quote

We give free quotes for all waterproofing work. You can call, email, or fill out our form. We come to your home or building, check the area, and explain the job. You get a fair price and a clear plan.

You are free to ask questions. There is no pressure to decide fast. We write everything down. You get a written quote with each step listed. We also explain how long the job will take.

Interior or Exterior Waterproofing: Which Is Right for Your Property?

We assess the leak source, foundation condition and building access to recommend interior or exterior waterproofing. Your written quote explains suitable repairs and the work involved.

Basement Leaks and Roof Waterproofing in NYC

Tell us where water appears and when it happens. We assess the affected area and explain suitable repairs before you agree to the work.

  • Leaks after rain. We check accessible cracks, floor edges and low entrances for possible water entry.
  • Roof leaks. We assess accessible seams, flashing and drainage before recommending roof waterproofing or repairs.
  • Building access. We explain any access needed through existing finishes or around the outside of your property.
  • Clear pricing. Your written quote sets out the proposed work, materials and expected schedule.

Areas We Serve

Call Us Now

+17189084716

We work in all main areas of New York City: We also visit nearby areas. Call us to check if we serve your town.

Questions People Ask

Recurring leaks after rain, damp basement walls, peeling paint or ceiling stains are reasons to arrange an inspection. These signs can have different causes. We assess the affected area before recommending waterproofing or other suitable repairs.

The cost depends on where water enters, the affected area, building access and the repairs needed. Crack sealing, drainage and exterior waterproofing involve different work. After a site check, we provide a written quote for the recommended scope.

Yes. We offer a free site check and quote. Tell us your property address, where water appears and when it happens. We assess accessible areas, explain suitable options and provide a written quote before you decide.

The right approach depends on the water source, wall condition and access around your building. Interior work may involve sealing or drainage. Exterior work may involve membranes and drainage outside foundation walls. We explain which options are practical for your property.

Yes. We assess waterproofing needs in older homes and commercial properties. Existing finishes, shared walls and limited outdoor access can affect the proposed work. We explain access requirements and any further assessment needed before agreeing on repairs.

Timing and disruption depend on the repair method, access, preparation and drying requirements. We explain the expected schedule and whether any rooms or entrances need to remain clear. Whether you can stay depends on the agreed work.

Yes. We offer basement and roof waterproofing services. These problems need different assessments: basement work may involve cracks, wall joints or drainage, while roof work may involve seams, flashing or membranes. We recommend work suited to the affected area.

Yes. We offer basement and roof waterproofing services. These problems need different assessments: basement work may involve cracks, wall joints or drainage, while roof work may involve seams, flashing or membranes. We recommend work suited to the affected area.

We serve Manhattan, Brooklyn, Queens and the Bronx, along with nearby Westchester areas including White Plains, Yonkers, Mount Vernon and New Rochelle. Contact us with your address to confirm availability for your property.

Warranty terms depend on the work and materials involved. Before booking, ask us to confirm the coverage, duration, exclusions and any maintenance requirements in writing. Review these details alongside your quote so you understand what is included.

Call Us Today

We are ready to help you stay dry. If you see water stains, smell damp air, or have leaks, call us. Our team will check the problem and fix it the right way.



    Trusted waterproofing in New York City. We seal cracks, stop leaks, and keep homes and buildings dry for good.

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