Expert Exterior Waterproofing Services in NYC – Protect Your Foundation from the Outside

At HRC Waterproofing Inc., we specialize in exterior waterproofing services for homes and commercial properties across New York City—including Brooklyn, Queens, Manhattan, the Bronx, Staten Island—and nearby counties like Nassau and Westchester. With over 25 years of experience, our expert team uses industry-proven materials and techniques to prevent water from ever entering your foundation.

Why Exterior Waterproofing?

Exterior foundation waterproofing is the most complete and permanent solution for keeping basements dry. By stopping water before it reaches your foundation walls, we prevent:

  • Structural damage from hydrostatic pressure
  • Mold, mildew, and interior moisture buildup
  • Flooding from surface runoff or poor drainage
  • Foundation cracks caused by freeze-thaw cycles

Our Exterior Waterproofing Process

Excavation of Foundation Perimeter

We carefully dig down to the footing level to expose the exterior foundation wall. This step allows access to apply waterproofing directly to the surface where water enters.

  • Depth: Typically 5–8 feet
  • Access: Hand excavation or machine digging depending on space
  • Soil management: We safely store and restore your landscaping post-job

Foundation Wall Cleaning & Crack Repair

Before waterproofing, we clean the wall surface and repair any visible cracks using:

  • Epoxy or polyurethane injection for deep sealing
  • Hydraulic cement patches for surface voids
  • Mesh & mortar for structural cracks (if needed)


Application of Waterproof Membrane

We apply a heavy-duty, rubberized asphalt or polymer-modified bitumen membrane for total wall coverage.

  • Products We Use:
  • Polyguard® 650 Sheet Membrane
  • Tremco® Watchdog Waterproofing
  • Henry® Blueskin WP200
  • Type: Self-adhering or spray-applied elastomeric membranes
  • Function: Creates a seamless, flexible barrier against water intrusion

Exterior DRainge

Waterproofing is only half the solution—drainage is critical. We install:

  • Exterior Curtain Drains
  • Corrugated or rigid PVC drain pipe wrapped in filter fabric
  • Surrounded by washed gravel for proper flow
  • Connected to daylight discharge or sump pump
  • Drainage Board or Dimple Board
  • Prevents soil from clogging the waterproof membrane
  • After waterproofing and drainage are installed, we backfill using clean soil or gravel to avoid future drainage problems and re-grade to slope water away from your home.

Optional Add-Ons For Extra  Protection

  • Window well drainage systems
  • Downspout extensions to move roof water away
  • Sodium bentonite clay for added soil waterproofing
  • Exterior sump pump installations (when gravity drainage isn’t available)

GET A QUOTE

CLIENT TESTIMONIALS

A new sump pump was adding replacing the old one. The job was done in a few hours and the crew cleaned up. Very impressed with the work and crew. Many thanks to Roman for outlining the work to be done.

Jesus R.

This company is amazing, the work that they have done on my basement has been completely successful at keeping water out of the space. They are professional, reliable, answer any and all questions, and have a very matter of fact no pressure way of giving an assessment of your situation and their suggestions for a game plan. I would highly recommend HRC Waterproofing for all your waterproofing needs.

Jennifer M.

HRC Waterproofing did an incredible job patching up cracks in our stucco wall. They were prompt, timely and incredibly professional. We highly recommend them!

Gregory W.

Incredible experience with HRC waterproofing. After three basement floods over 10 years we reached out to HRC and Raymond and his team (on short notice) put in pumps and a French drain. Our basement has stayed dry through several severe storms in which our neighbors experienced flooding.

Ryan L.

HR installed a french drain system in my basement a few months ago. The system has kept my once flooded basement dry as bone. I no longer have to worry and watch the weather wondering not if, but how much water I will get.

Michael S.

The team was very professional and well versed in waterproofing. They provided multiple solutions at a fair price and didn’t pressure me into any additional services. In the event it’s needed I’d use them again.

Shaquana F.

Service Areas

We provide exterior waterproofing across:

  • New York City: Brooklyn, Queens, Manhattan, the Bronx, Staten Island
  • Nassau County
  • Westchester County
  • Available for both residential and commercial properties.


CALL NOW

Don’t wait until your basement floods—protect your property from the outside in. Contact HRC Waterproofing Inc. today to schedule your free exterior waterproofing inspection. Our expert team will assess your foundation, drainage, and grading to design a long-lasting, custom solution.


FAQS

Q: How long does exterior waterproofing last?

A: When done professionally, exterior waterproofing can last 25–40 years or more, especially with proper drainage and backfill.

Q: Is exterior waterproofing better than interior?

A: Exterior waterproofing is the most complete solution because it stops water at the source—before it reaches your basement walls.

Q: How much does exterior waterproofing cost in NYC?

A: Costs vary by home size, excavation depth, and drainage needs. Contact us for a free estimate tailored to your property.