ACM Basement Waterproofing

ACM Basement Waterproofing ACM Basement Waterproofing has provided reliable basement and crawl space waterproofing, and foundation repair throughout Long Island for 25 yrs.

Licensed, insured, and certified work. ACM Basement Waterproofing, Inc. is a family owned and operated waterproofing company serving Nassau and Suffolk counties. With expertise in a wide variety of drainage and waterproofing solutions, ACM has become the company of choice among Long Islanders looking to end their wet basement woes once an for all. From French Drains and sump pumps, to window wells

, grading, channel drains and foundation excavation, our Certified Waterproofing Specialist will craft the optimal solution to keep the water out of your basement.

To all the fathers, grandfathers, and father figures—Happy Father's Day! 💙Today we celebrate the people who show up, len...
06/21/2026

To all the fathers, grandfathers, and father figures—Happy Father's Day! 💙

Today we celebrate the people who show up, lend a hand, share their wisdom, and help make a house feel like home.

We hope your day is spent with the people who matter most.

Seeing mold or mildew in your  ? 😷🏠💧The mold isn't the real problem—the moisture is. 's humidity, high water tables, and...
06/19/2026

Seeing mold or mildew in your ? 😷🏠💧

The mold isn't the real problem—the moisture is.

's humidity, high water tables, and heavy rains create the perfect conditions for mold growth. Left untreated, excess moisture can lead to musty odors, poor indoor air quality, and even structural damage. ⚠️🔨

The good news? Professional addresses the source of the problem, helping keep your home dry, healthy, and protected year-round. ✅

Learn the warning signs and how to prevent crawl space mold:
https://acmbasementwaterproofing.com/crawl-space-repair/crawl-space-mold-mildew/

If you are dealing with crawl space mold or mildew, ACM is the solution. Our crawl space waterproofing stops crawl space mold at the source. Schedule your inespection today!

Is the ground floor of your home dipping or feeling bouncy when you walk across the room? 🏠 If you've got a crawl space ...
06/15/2026

Is the ground floor of your home dipping or feeling bouncy when you walk across the room? 🏠 If you've got a crawl space underneath, that sag usually starts down there.

Common culprits under floors:
🔧 Old wooden posts that rot or shift
⚠️ Masonry piers that sink over time
📏 Joists spanning too far without support

Our steel support posts lift your floors back where they belong and most jobs in and are done in a single day. 🗓️

We fix sagging, bowing floors above your crawl space with experts crawl space support jack installation in Long Island. Get your free estimate!

🤔 Think your basement is the only one with moisture problems?💡 **Basement Fact:**Approximately 60% of U.S. homes have a ...
06/11/2026

🤔 Think your basement is the only one with moisture problems?

💡 **Basement Fact:**

Approximately 60% of U.S. homes have a wet basement, and 38% are at risk for basement mold.

Many homeowners assume occasional dampness is normal, but excess moisture can lead to , musty odors, damaged belongings, and costly repairs.

If you've noticed damp walls, water after heavy rain, or that familiar musty basement smell, it may be time to look into before a small issue becomes a major headache.

Keeping your basement dry isn't just about protecting the space below your home—it's about protecting your entire home's air quality, structure, and value.

homeowners: don't ignore the warning signs.

Another   basement protected from water intrusion 💧🏠Our team recently completed a full   system installation featuring:✔...
06/08/2026

Another basement protected from water intrusion 💧🏠

Our team recently completed a full system installation featuring:
✔️ Interior French drain system
✔️ High-performance sump pump
✔️ Trench drain at the basement entrance

This homeowner now has a stronger defense against groundwater, heavy rain, and basement flooding.

If your basement takes on water, smells damp, or shows signs of moisture, is here to help protect your home year-round.

📍 Serving homeowners across Long Island

⚠️ Stair-step cracks in your basement wall are a telltale sign of an underlying foundation issue.If you've noticed any o...
06/04/2026

⚠️ Stair-step cracks in your basement wall are a telltale sign of an underlying foundation issue.

If you've noticed any of these warning signs:

✔ Zig-zag cracks running through mortar joints
✔ Cracks that seem to be getting wider over time
✔ Basement walls that appear to be bowing inward
✔ Doors or windows that suddenly stick

Stair-step cracks are commonly caused by foundation settlement, hydrostatic pressure, or shifting soil around your home. Left unaddressed, the underlying problem can continue to worsen, leading to structural damage, water intrusion, and more costly repairs.

offers free inspections throughout Nassau County and Suffolk County to identify the source of the problem and provide permanent and solutions.

Stair-step foundation cracks in Long Island? Learn what causes them, when they’re structural, and how ACM stabilizes basement walls with carbon fiber reinforcement.

💦   is often the first sign of a bigger problem.✔ Carpet feels damp or cool near the walls✔ Musty odors that won't go aw...
06/01/2026

💦 is often the first sign of a bigger problem.

✔ Carpet feels damp or cool near the walls
✔ Musty odors that won't go away
✔ Wet padding underneath the carpet
✔ Carpet gets wet again after every rainstorm

These are signs that moisture or groundwater may be entering your basement. Left unaddressed, these water issues can lead to mold growth, persistent odors, and costly damage to your finished basement.

offers free inspections throughout Nassau County and Suffolk County to identify the source of the problem and provide permanent solutions.

📞 Contact us today to get started. +1 631-581-0600

Noticing damp or wet basement carpet in your Long Island home? Learn what causes it, why it matters, and how ACM Basement Waterproofing fixes it permanently.

Interior   and   system installed on   💧🏠These systems are designed to help capture intruding water along the basement p...
05/29/2026

Interior and system installed on 💧🏠

These systems are designed to help capture intruding water along the basement perimeter and redirect it away from the home before it can spread across the basement floor 🌧️🔧

A clean, professional waterproofing installation built for long-term basement protection.

💧 “The crew was punctual, hardworking, and very diligent throughout the entire project... After several days of heavy ra...
05/27/2026

💧 “The crew was punctual, hardworking, and very diligent throughout the entire project... After several days of heavy rain, not one drop of water entered my basement.”

Professional workmanship, clean installation practices, and reliable waterproofing solutions are what ACM Basement Waterproofing brings to every project across 🏠🌧️

This  , we pause to remember and honor the brave men and women who gave their lives in service to our country 🇺🇸We recog...
05/25/2026

This , we pause to remember and honor the brave men and women who gave their lives in service to our country 🇺🇸
We recognize the sacrifice made by so many and reflect on the meaning of the day with gratitude and respect.

Address

121 Freeman Avenue
Islip, NY
11751

Opening Hours

Monday 7am - 7pm
Tuesday 7am - 7pm
Wednesday 7am - 7pm
Thursday 7am - 7pm
Friday 7am - 7pm
Saturday 7am - 7pm
Sunday 7am - 7pm

Telephone

+16315810600

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