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Long Island Chooses Us
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Linda Weiss profile picture
Linda Weiss
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We feel very fortunate to have found this company. I met with Mike regarding leaks in the basement. He assessed the entire house, gave me options and clearly explained the process. Everyone from Mike, to the secretary in the office to the workers were absolutely amazing. They did the work as promised, gave us a reasonable price, and left the place immaculate. We could not be happier with the results! This is a great family owned business. You can’t go wrong!
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rose smith profile picture
rose smith
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The work was done with the utmost professionalism and competence. The service representative was very thorough in examining the dehumidifier, air purifier and sump pump and provided any service needed including draining the pump.
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Craig Todaro profile picture
Craig Todaro
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Mark took it upon himself to come to my home and examine my issue himself. He is knowledgeable not only in basement waterproofing, but also in land grading, excavating and several other adjacent topics. While it was concluded my issue was not foundation oriented, he did not hesitate to propose several other creative ideas to help address my issue. He has a great disposition, and I would not hesitate to recommend his services to others.
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Linda Russo profile picture
Linda Russo
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I bought my house 24 years ago, and for 24 years I lived with water coming in to my finished basement. A few years back I hired another company to put in a French Drain System which never worked. As the storms got worse the water in my basement increased. Because of my previous experience I was hesitant to hire another company until I read about ACM and met Mark who was highly recommended by my Home Service Company. Mark spent about 2 hours explaining the process, and what was needed. In February 2025 ACM put a extensive French Drain System which included taking down the sheet rock walls, demoing tile and placing a membrane along the whole perimeter of the drain system. All of this work was completed in 3 days exactly what Mark said. The guys were professional, polite, and best of all they were careful to save my Radiant Heating System which was under the tile. Since the French Drain System was placed I have not had 1 drop of water coming into my basement. I am very grateful to Mark's ACM Company, and was able to refinish my basement without fear of water damage. I highly recommend ACM Basement Water Proofing to all who are having water problems with their basement.
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Maria Lacoste profile picture
Maria Lacoste
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ACM Basement Waterproofing did an excellent job in my basement, no more water intrusion. The job was handled professionally and on time. I am happy to recommend them.
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William Rothstein profile picture
William Rothstein
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I chose ACM because of their "Best of Long Island" award, and I'm glad I did. Mark's crew (led by Joe) installed an interior French drain and a sump pump in our basement. Six months later, we've had no problems with water. These guys know what they're doing.
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Links2282 profile picture
Links2282
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My wife and I would like to say thank you to Mark and his team for their excellent work installing a French Drain in our finished basement. For years we had to worry about flooding if we got a large amount of rain in a short time. The entire staff was totally professional. knowledgeable, competent and efficient. They were clean and caring and after each day they protected the whole worksite. Without a doubt, we would recommend them for all your basement waterproofing needs.
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Peter Webb profile picture
Peter Webb
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I called acm after finding water in the basement. Mark answered the call and quickly helped diagnose the issue. He guided me to check baseboard and sure enough a broken valve was causing this leak. It's good to find someone to help a homeowner without rushing to take their money. It's good to find a honest business man
Bethpage Best of Long Island Winner warded to ACM Basement waterproofing
Angi Super Service Award for ACM Basement Waterproofing in Long Island
Basement Health Association Star award given to ACM Basement Waterproofing in Long Island
Best of Long Island Award for Basement Waterproofing in Long Island
Angi Super Service Award for Basement Waterproofing in Long Island

Brookhaven Basement Waterproofing Services You Can Trust

Brookhaven Basement Drainage and Crawl Space Waterproofing Services

As one of the largest towns in all of New York State, Brookhaven, NY covers a wide range of neighborhoods, soils, and drainage conditions—from the coastal flood zones in Mastic Beach to the more elevated, tree-lined streets of Setauket, Coram, and Medford. That’s why no two waterproofing solutions here should ever be the same.

At ACM Basement Waterproofing, we’ve helped homeowners throughout Brookhaven—both along the South Shore and deep inland—protect their properties with custom-designed solutions that work for each home’s unique conditions. Whether you’re seeing water seepage in your basement after a Nor’easter or noticing musty air and soft spots in your crawl space, we’re ready to help.

Our team provides:
Free, no-pressure inspections tailored to your home’s location and structure
Permanent interior French drain and sump pump systems, including battery backups
Crawl space drainage for homes with low clearances
Foundation crack repair backed by our lifetime transferable warranty

From Shirley to Selden, Bellport to Blue Point, ACM is Brookhaven’s trusted name in basement waterproofing and foundation repair. We know the landscape. We know the risks. And most importantly, we know how to protect your home.

 

 

 

Brookhaven, NY Basement Waterproofing

If water is seeping into your basement, time is of the essence. The longer you wait to fix the problem, the greater the problem can become. Basement moisture can damage property, mold, rot, and insect and rodent infestation.

The solution is to keep water out of your basement with an interior waterproofing system. ACM’s waterproofing systems capture any entering water in your Brookhaven basement and remove it before it ever causes any issues.

The waterproofing system includes:
*French drain installed below the floor along the perimeter of your basement to capture water
*A sump pump connected to the french drain to expel any collected water
*An exterior drainage system to safely disperse any expelled water

We are proud of our basement waterproofing services in Brookhaven, and our customers are thrilled with the results. If you don’t believe us, just take a look at all of our online reviews. When you call ACM, you know you are calling the best basement waterproofing company in Brookhaven.

Foundation Repair in Brookhaven NY

Along with basement waterproofing, ACM offers foundation repair services in Brookhaven. We secure any bowing foundation walls in your basement using carbon fiber straps.

The straps keep the wall in place, preventing any further bowing or damage. Carbon fiber strap installation is also a much lower-cost option than replacing the entire foundation. But again, the key is time—the earlier you have ACM inspect and repair your foundation in Brookhaven, the less likely you will have to pay for an expensive foundation replacement.

Crawl Space Waterproofing in Brookhaven NY

You may have a crawlspace under your Brookhaven home instead of a basement. Like a basement, water in your crawl space spells disaster – mold, rot, and property damage that only grows worse over time. We prevent crawl space water just like basement water with an interior basement waterproofing system.

An interior french drain is installed along the perimeter of the crawl space, along with a sump pump and a discharge system. Any entering water is collected, channeled to the pump, and pumped out and away from your home, far enough away that it can’t cause any problems. ACM is your go-to solution if you live in Brookhaven and need a crawl space waterproofing expert.

Brookhaven Customer Reviews

While we’re still in the process of gathering customer reviews from Brookhaven, you can visit our testimonials page to see what customers from other towns have to say about our services. We take pride in the positive feedback we’ve received.

Getting Your Brookhaven Homes Ready

At ACM Basement Waterproofing, we simplify foundation repair by working closely with you, providing clear guidance and innovative solutions. Our top quality services ensure lasting protection for your home, with your peace of mind as our priority.

Brookhaven Borough Municipal Building
Phone: 631-451-8696
Location: Brookhaven Town Hall
1 Independence Hill
Farmingville, NY 11738
Office Hours: M – F 9:00 AM —  4:30 PM

Brookhaven, NY Links:
Town of Brookhaven NY

Local Brookhaven, NY Contractors for Your Home Construction Needs

Here’s a list of contractors who may assist with your home projects in Brookhaven; please note that while we provide this as a helpful resource, ACM does not specifically endorse any of them.

Plumber
NH Ross Inc., Plumbing, Drains, Cooling, Heating & Electrical
120 Middle Country Rd, Middle Island, NY 11953
631-397-0359

Electrician
M&I Electric & Technology Services
95 Hewlett Ave, East Patchogue, NY 11772
631-830-6533

Driveway Paving Contractor
Stone Rock Paving & Masonry
9 Lynwood Ave, Farmingville, NY 11738
631-839-1282

Landscaper
VC Landscaping LLC
14 Sheridan Dr, Shirley, NY 11967
631-790-1119

Masonry
Jac Bell Masonry Construction Corp
57 E Main St, Patchogue, NY 11772
631-618-5949

Let’s Fix the Basement Water in Your Brookhaven Home

Brookhaven is one of Suffolk County’s most expansive towns — and whether you’re in a quiet residential neighborhood or a growing area, protecting your property value matters. Basement water issues and foundation cracks don’t just affect comfort — they can impact resale and long-term investment. ACM offers expert waterproofing solutions that add security, value, and peace of mind. No gimmicks, no pressure — just reliable work from a team that knows Brookhaven. Let’s keep your home strong and dry, for today and the future.

Protect Your Home Today

We make it simple, affordable, and stress-free — with guaranteed results.