Crawl Space Repair

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Crawl Space Repair

Long Island Chooses Us

    
 
 
       Posted on Google  
   
   Linda Weiss 
 
 
 
 Trustindex 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 smith 
 
 
 
 Trustindex 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 Todaro 
 
 
 
 Trustindex 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 Russo 
 
 
 
 Trustindex 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 Lacoste 
 
 
 
 Trustindex 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 Rothstein 
 
 
 
 Trustindex 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  
   
   Links2282 
 
 
 
 Trustindex 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 Webb 
 
 
 
 Trustindex 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

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Basement Water Solutions

Crawl Space Waterproofing & Repair in Long Island Near You

Your Trusted Crawl Space Waterproofer Serving Suffolk & Nassau County

While it’s easy to forget about your crawl space, neglecting it can lead to mold, rot, and foundation damage. Fortunately, ACM Basement Waterproofing can help prevent these issues with crawl space waterproofing and repair.

We specialize in protecting Long Island homes and businesses from water damage, using high-quality products and workmanship to ensure your crawl space remains dry and safe. So, don’t wait until it’s too late; contact ACM today to start protecting your crawl space.

Protect Your Home Today

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

What Is Crawl Space Repair?

Crawl space repair is more than just a patch job — it’s about fixing the damage that moisture and time cause beneath your home and preventing it from coming back. At ACM, we specialize in comprehensive crawl space repair services for Long Island homeowners, combining structural reinforcement with targeted waterproofing solutions.

Whether you’re dealing with sagging floors, rotted wood, or standing water, our team can restore your crawl space and protect your home from further damage. If you’re searching for crawl space repair near me, ACM is the local Long Island expert you can trust to get the job done right.

Signs Your Crawl Space Needs Repair

Not sure what’s happening under your home? Here are signs that your crawl space might need repair:

Floors feel soft, bouncy, or uneven
Cracks in walls or ceilings above the crawl space
Doors or windows sticking or misaligned
Cold or drafty rooms during winter
A persistent musty smell inside your home
High humidity levels or unexplained allergy symptoms
Water or condensation visible under the house

Homeowners across Nassau and Suffolk County deal with these issues more often than you’d think — especially in flood-prone or older neighborhoods. If you’re Googling “crawl space repair near me”, ACM is ready to help.

Common Crawl Space Issues We Fix

From structural problems to moisture damage, we’ve seen it all. Our crawl space repair services address a wide range of issues affecting homes across Long Island:

Structural Problems:

Sagging or uneven floors above the crawl space
Cracked, shifting, or sinking support piers
Failing crawl space posts and beam systems

Moisture-Related Problems:

Standing water or pooling after storms
Mold and mildew buildup
Musty odors that spread throughout the house

If you’re noticing any of these issues in your Long Island home, it’s time to call a crawl space repair specialist nearby.

Why Timely Crawl Space Repair Matters

Delaying crawl space repairs can lead to much bigger problems. What starts as a soft spot in the floor can turn into rotting beams, structural sagging, or costly mold remediation. The longer you wait, the more damage water and humidity can do — not just under your home, but inside it.

Repairing your crawl space now protects:

Your home’s structural safety
Indoor air quality for your family
Energy efficiency and heating costs
Your property’s long-term resale value

If you’re a Long Island homeowner, acting early can save you thousands down the road. ACM makes it easy with free inspections and local expertise.

Our Crawl Space Repair Process: What to Expect

Here’s how crawl space repair works with ACM:

Inspection – We start with a thorough crawl space inspection to identify structural damage and moisture issues.
Diagnosis – Our team explains the problems in plain terms and gives you a transparent repair recommendation.
Custom Plan – You get a tailored solution, whether that means reinforcing joists or installing a waterproofing system.
Expert Work – We complete your repair efficiently, treat your home with care, and keep the site clean.
Peace of Mind – Your home is stronger, drier, and safer — and you know the job was done right.

If you’re looking for a crawl space repair company near me with real experience on Long Island, ACM is your go-to team.

Why ACM for Your Crawl Space

ACM Basement Waterproofing is a family-owned and operated company in Long Island that specializes in repariing crawl spaces. We serve Nassau and Suffolk Counties and have become the go-to company for homeowners, putting an end to their crawl space water problems for good. See why our past customers chose us.

Over the years, ACM Basement Waterproofing has earned a reputation for being the top choice for crawl space waterproofing and crawl space repair in Long Island. We are your basement waterproofing, foundation repair, and crawl space experts.

Protect Your Home Today

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

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