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
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
Is your Suffolk County home facing moisture challenges or foundation issues? ACM Basement Waterproofing delivers comprehensive protection for your home’s foundation, basement, and crawl space. With decades of experience serving Suffolk County communities, we specialize in creating customized solutions that keep your property dry and structurally sound. No fuss. No mess. Just trusted solutions.
We make it simple, affordable, and stress-free — with guaranteed results.
As Suffolk County homeowners know all too well, water infiltration in basements and crawl spaces is a persistent challenge along Long Island’s coast. Our unique climate, with its heavy seasonal rains and varying temperatures, makes homes particularly vulnerable to moisture problems that can quickly escalate from minor annoyances into major structural threats.
Structural and Health Impacts
Water’s destructive force begins at your home’s foundation. In Suffolk County’s diverse soil conditions, moisture gradually erodes concrete and mortar, weakening your home’s essential support structure. The freeze-thaw cycles common to our Long Island winters can accelerate this damage, causing walls to crack and floors to become uneven. Beyond structural concerns, our coastal climate creates perfect conditions for toxic mold growth and increased humidity levels, which can trigger serious respiratory issues and worsen allergies or asthma symptoms.
Loss of Property Value
In Suffolk County’s competitive real estate market, water damage can significantly decrease your property’s value and complicate future sales. Insurance companies may increase premiums for affected properties. Additionally, moisture problems force your heating and cooling systems to work harder, leading to higher utility bills – a particular concern given Long Island’s already expensive energy costs.
Basement leaks are more than just an inconvenience – they can threaten your home’s structural integrity and your family’s health. Our certified specialists:
Don’t let foundation problems compromise your Suffolk County home’s safety. We address:
Our innovative carbon fiber strip reinforcement system provides long-lasting structural support while minimizing disruption to your property. If you see cracks across your basement walls and they are starting to bow, we can put a stop to the problem.
A dry crawl space is essential for your Suffolk County home’s health. Water in your crawl space can lead to mold, rot, and health issues resulting from mold spores.
Our comprehensive approach includes:
You know that you need a basement waterproofing and foundation repair expert in Suffolk County, but you are unsure who to trust. Thank goodness that your search is over. ACM offers:
You know that you need a basement waterproofing and foundation repair expert in Suffolk County, but you are unsure who to trust. Thank goodness that your search is over. ACM offers:
Take a look at our testimonials page for reviews from customers from other towns.
We make it simple, affordable, and stress-free — with guaranteed results.
At ACM, we are dedicated to making your home repair process as smooth and stress-free as possible, offering the guidance and support you need. We’re here to answer any questions you have and explain how our solutions effectively protect your home.
Suffolk County
Location: Riverhead County Center
County Road 51, Riverhead, NY 11901
Suffolk County, NJ Links:
Suffolk County Contact Lists
Suffolk County Departments and Agencies
Suffolk County Economic Development and Planning
Below is a list of contractors who may be able to assist with your home projects in Suffolk County. Please keep in mind that while we offer this information as a reference, ACM does not officially endorse any of these contractors.
Plumber
Suffolk Plumbing Inc
76 Montauk Hwy, Amityville, NY 11701
631-813-9384
Electrician
M&I Electric & Technology Services
95 Hewlett Ave, East Patchogue, NY 11772
631-830-6533
Driveway Paving Contractor
Summit Paving & Masonry
30 Kelsey Ave, Huntington Station, NY 11746
631-464-7054
Landscaper
Landscaping & Masonry By G Pellegrino Long Island
3 Donna Ct, Selden, NY 11784
631-696-3007
Masonry
Genstar Masonry and Landscaping
5340A Merrick Rd, Massapequa, NY 11758
516-902-0869
Protect your investment with Long Island’s trusted waterproofing experts. Contact us for your inspection and estimate:
Our team is ready to deliver the permanent solution your property needs. From initial assessment to project completion, we ensure your basement, foundation, and crawl space remain dry and secure for years to come. Serving Suffolk County and all of Long Island with pride.
We make it simple, affordable, and stress-free — with guaranteed results.
