Basements and crawl spaces are two of the most vulnerable parts of your property, making waterproofing very important for your property’s longevity. Water in your basement can come from many different sources such as cracks in the foundation walls, hydrostatic pressure, poor drainage due to grading, or leaking window wells.

Why waterproof your basement or crawlspace? When you protect your basement, you protect your family, staff, and customers from harm. Wet basements and crawlspaces are the leading cause of indoor air quality problems. Mold, mildew, and radon can penetrate your home through your foundation and cause severe health issues. Furthermore, water from floods contains harmful bacteria and viruses that can make your family sick.

The waterproofing experts at Seepage Stoppers in Long Island, NY are here to help. We’ve got a wide range waterproofing solutions that can be customized to your specific needs. Contact us today for a free inspection and estimate.

Interior Waterproofing

Basement Wall/Floor
Waterproof Sealer Coatings

Sump Pumps

Sump Pump Replacement,
Sump Pump Installation

Exterior Waterproofing

Exterior Sealing, Foundation Drainage Lines, Exterior Drainage Systems

French Drains

French Drain Installation,
Dry Basement Systems


Crawl Space Moisture-proof Barrier and
Dehumidifier installation

Basement Ventilation

Floor Fans, Dehumidifiers, Exhaust Fans, Air Vents

What Causes Water Seepage?

While heavy rainfall is one of the most common causes of water seepage, improper downspouts or clogged gutters and window wells that allow water to accumulate around your home’s foundation can also cause seepage. In addition, improper grading around your home can also be a cause. Your property may be more susceptible to water seepage if:

✅  Your foundation was built on expansive clay

✅  Your foundation was built on improperly compacted fill soils

✅  Your foundation has poor drainage around its exterior

✅  Your home is in an area with extreme seasonal changes

✅  Your home experienced a plumbing leak beneath the foundation

✅  Tree roots are growing too close to your home

✅  An act of nature (earthquake, flood or drought) compromised the foundation structure

✅  Your homes is positioned above underground rivers and streams, which is very common on Long Island

What are the indications that Waterproofing is needed?

Just as there are many causes of water seepage, there are many signs that your basement or crawl space needs waterproofing. Here are the most common signs of water seepage:

✅  Water puddles in the basement

✅  Water stains on the floor and/or walls

✅  Leaks coming from the floor and/or walls

✅  Condensation on basement windows and doors

✅  Swelling or warped doors

✅  Smell of dampness that doesn’t go away

✅  Visual confirmation of mold or mildew


Contact Us for A Free Consultation & Estimate

Seepage Stoppers:

Basement Waterproofing and Foundation Repair

Call Us Anytime: (631) 352-0484


Contact Seepage Stoppers today and schedule a free inspection of your foundation or crawl space for cracks and potential water seepage. We will provide a free inspection report along with an estimate to fix the source of the water seepage, repair any damage, and add protection to your home.

Testimonials from Seepage Stoppers Customers:

“The Seepage Stoppers were professional and inspected my home and provided a detailed report of what was causing the water seepage and my best solution to correct it. Highly recommended.”
John D., Islip, NY

“The crew came out and thoroughly inspected my home for water seepage. Once I accepted their proposal they came out the next day and completed the job. I am very satisfied with their work.”
June C.,  Ronkonkoma, NY

“The Seepage Stoppers installed a sub-pump to drain the water that was collecting. They also waterproofed the basement walls and foundation so no further damage could occur.”
David W. Lake Grove, NY

Why Choose US

Satisfaction Guarantee

We guarantee you will be completely satisfied with our work upon completion of the job.

A One-Stop Solution

From water damage renovation to sealing foundation cracks and basement waterproofing, we provide it all.

Free Consultation

We will thoroughly inspect your foundation for cracks and provide a free estimate at no-cost or obligation to you.

We are Available 24/7!

Seepage Stoppers:

Basement Waterproofing and Foundation Repair


Call Us Anytime: (631) 352-0484