Posted on Google Linda WeissTrustindex verifies that the original source of the review is Google. 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!Posted on Google rose smithTrustindex verifies that the original source of the review is Google. 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.Posted on Google Craig TodaroTrustindex verifies that the original source of the review is Google. 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.Posted on Google Linda RussoTrustindex verifies that the original source of the review is Google. 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.Posted on Google Maria LacosteTrustindex verifies that the original source of the review is Google. 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.Posted on Google William RothsteinTrustindex verifies that the original source of the review is Google. 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.Posted on Google Links2282Trustindex verifies that the original source of the review is Google. 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.Posted on Google Peter WebbTrustindex verifies that the original source of the review is Google. 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
Basement Water Solutions
In this industry, contractors are not required to be certified in order to do business. Anyone can claim to be a basement waterproofer. At ACM, we have gone above and beyond by becoming a Certified Waterproofing Specialist through the Basement Health Association, the national trade association for our industry.
Over the years, our commitment to quality work and customer satisfaction has earned us recognition from both industry organizations and the Long Island homeowners we serve.
We make it simple, affordable, and stress-free — with guaranteed results.
Basement Health Association STAR Award ACM has been honored with the Basement Health Association’s prestigious STAR Award, which recognizes contractors for superior service and customer satisfaction as rated by their own customers. Only a small number of waterproofing companies nationwide have ever received this distinction.
BHA Certified Waterproofing Specialist ACM is one of just a handful of companies in all of New York State with Certified Waterproofing Specialists on staff. Certification requires passing a rigorous exam covering hydrogeology, building construction, ethics, and OSHA safety procedures, plus ongoing continuing education to maintain the credential.
Angi Super Service Award ACM has earned the Angi Super Service Award, given to the top-rated service professionals based on verified customer reviews. This award puts ACM in the top tier of contractors on the platform.
Bethpage Best of Long Island, Best Basement Waterproofing Company ACM has been voted Best Basement Waterproofing Company on Long Island eight times in the Bethpage Best of Long Island awards, decided by Long Islanders voting for their favorite local businesses.
Dan’s Papers Best of the Best ACM was named Best of the Best by Dan’s Papers, the leading lifestyle publication for the East End of Long Island.
Beyond the awards, our track record speaks for itself:
Awards and certifications are not just marketing material. They are evidence of how we approach every job. The STAR Award reflects what our customers say about us. The BHA certification reflects how seriously we take our craft. The Best of Long Island wins reflect our standing in the community we serve. And the Angi Super Service Award reflects consistent quality across hundreds of recent jobs.
When you hire ACM, you are hiring the most decorated and recognized basement waterproofing contractor on Long Island.
ACM is one of the most trusted basement waterproofing companies in the country and offers the most effective basement waterproofing Long Island has to offer. Beyond basement waterproofing, we provide foundation repair, crawl space waterproofing, window well drains, mold testing, and more.
No other waterproofing company is this dedicated to getting the job done right the first time, every time. If you ever have a problem with any of our products or services, let us know and the owner, Mark McAlpin, will personally make it right.
We make it simple, affordable, and stress-free — with guaranteed results.
