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Long Island Chooses Us
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
Long Island Chooses Us
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

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Basement Water Solutions

Best of Long Island Award for Basement Waterproofing in Long Island
Angi Super Service Award for Basement Waterproofing in Long Island

Our Long Island Service Area

Your Basement Waterproofing, Crawl Space Waterproofing & Foundation Repair Contractor Serving Nassau and Suffolk Counties

ACM Basement Waterproofing has served Long Island homeowners for years, covering every town from the Queens border out to Montauk Point and the North Fork. Our crews work daily across Nassau and Suffolk Counties, which means we know how foundations behave in coastal sand, North Shore clay, and everything in between. Wherever your home sits on Long Island, we can be there to inspect your basement, crawl space, or foundation.

Protect Your Home Today

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

Serving All of Nassua & Suffolk County

Click on your town below to see reviews from our customers in your neighborhood! Or, check out our testimonials page for an assortment of handwritten reviews from customers from all across Long Island. 

Installed sump pump as part of basement waterproofing system in Long Island

Fixing Long Island Basements, Crawl Spaces and Foundations​

Why Long Island Homes Need Specialized Waterproofing & Foundation Repair Experts

Long Island’s geography creates waterproofing challenges that generic contractors often miss. The high water table across much of Nassau and Suffolk, the freeze-thaw cycles each winter, the heavy clay soils inland, and the sandy conditions near the coast all affect how water moves around and through a foundation.

A waterproofing and foundation repair approach that works in Garden City may not be right for Montauk, and what works in Levittown may not suit a home in Lloyd Harbor. Our experience across every corner of Long Island lets us match the solution to the conditions on your property.

Basements, Crawl Spaces and Foundations

When it comes to basement waterproofing, crawl space solutions, and foundation repair, ACM is your trusted contractor serving Long Island. We have helped thousands of Long islanders keep their basements dry, their crawl spaces safe, and their foundations strong. Call us today to schedule a free inspection and quote.

 

Protect Your Home Today

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