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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

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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

Solutions to Basement Water Issues in Long Island Near You

We Fix Your Wet Basement Problems!

A wet basement can ruin your day and cause extensive damage to your belongings, furniture, and home. But, ACM basement waterproofing provides trusted and reliable basement waterproofing solutions for homeowners throughout Long Island.

Protect Your Home Today

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

Basement Water Solutions in Long Island

Taking Care of Wet Basement Issues - A Complete Waterproofing System

Long Island basement waterproofing isn’t about picking one product off a list. It’s about installing a complete system where each component handles a specific job:

  • Interior French Drain captures water at the floor-wall joint, the most common entry point.
  • Sump Pump moves collected water out through a discharge line.
  • Battery Backup Pump keeps the system running during the storm-related outages that cause flooding in the first place.
  • Window Well Drains stop water entering through basement windows.
  • Basement Encapsulation with vapor barrier captures moisture seeping through basement walls.
  • Yard Grading corrects exterior conditions that send water toward your foundation.
  • Egress Windows make a waterproofed basement legally habitable as living space.
  • Basement Ventilation controls humidity and air quality that drainage alone can’t fix.

During your free inspection, we’ll identify which components your basement needs and explain how they work together as a system.

Long Island basement interior french drain installation

Interior French Drains

The French drain is the most effective, efficient, and affordable solution for basement waterproofing. Interior perimeter French drains, also known as drain tiles, are now the preferred choice due to their durability and reduced risk of clogging. ACM specializes in installing advanced french drain systems.

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Long Island sump pump installation company

Basement Sump Pumps

A sump pump is a critical component of basement waterproofing, and ACM Basement Waterproofing is Long Island’s trusted expert for professional sump pump installation in basements and crawl spaces. The sump pump channels water via PVC piping to a designated outdoor discharge location. With decades of experience and award-winning service, ACM ensures reliable, high-quality sump pump solutions. Contact them today for a free quote.

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Long Island battery backup sump pump installation

Battery Backup Pumps

A sump pump is essential for Long Island basement waterproofing, but it won’t function during a power outage, leaving your home vulnerable during heavy rains. ACM Basement Waterproofing recommends installing a battery backup sump pump to ensure continuous protection. This system collects water from the French drain and pumps it away from your home, even when the power is out.

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Long Island Basement window well drain installation

Window Well Drains

Properly installed window well drain pipes can prevent water from leaking into your basement by redirecting it safely to the foundation drain or sump pump system. These solutions protect your Long Island home from water damage, mold, and rot, ensuring a dry, usable basement.

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Long Island basement encapsulation expert

Basement Encapsulation

A basement vapor barrier is installed along the interior of your basement walls to prevent moisture from reaching the rest of your basement. ACM uses a dimple board vapor barrier, a rigid HDPE membrane that captures water seeping through your foundation and channels it down into your French drain. Available in white or grey to match your walls, the dimple board keeps your Long Island basement dry with a clean, finished look.

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basement vapor barrier and encapsulation in Long Island

Basement Vapor Barrier

A basement vapor barrier is installed along the interior of your basement walls to prevent moisture from reaching the rest of your basement. ACM uses a dimple board vapor barrier, a rigid HDPE membrane that captures water seeping through your foundation and channels it down into your French drain. Available in white or grey to match your walls, the dimple board keeps your Long Island basement dry with a clean, finished look.

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Yard grading & leveling for basement waterproofing in Long Island

Yard Grading & Leveling

Expert yard grading and leveling services for your Long Island home address exterior factors that contribute to basement water issues. Poor yard grading can lead to water pooling near your foundation, causing leaks, erosion, and landscape damage. Proper landscape grading involves reshaping the land around your Long Island home to ensure a 5% slope away from the foundation, using clay-like soil for drainage and organic-rich topsoil for healthy plant growth.

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basement egress window installation in Long Island

Basement Egress (Escape) Windows

An egress window in your Long Island basement is essential for meeting building codes and making your basement a safe, habitable space. Egress windows provide a secondary exit, required for living or sleeping areas, while offering natural light, ventilation, and peace of mind in emergencies.

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restoration equipment rental in Long Island

Basement Restoration Equipment Rental

Before your basement can be waterproofed, the water needs to be removed, and the basement needs to be dried so the waterproofing system can be installed. If you have existing basement water, we offer carpet fan rentals and basement dehumidifier rentals.

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Long Island Basement Ventilation System Installation

Basement Ventilation System

A musty basement may seem normal in Long Island, but it isn’t. Moisture leads to water damage, rot, and especially mold, which spreads through the air and can trigger allergies and asthma throughout your home. The only way to prevent these problems is by controlling moisture and improving air circulation to keep your basement, and your family, healthy.

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Basement mold testing in long island

Basement Mold Testing

A damp Long Island basement gives mold everything it needs to grow, and the worst of it often hides behind walls or inside insulation where you’d never spot it. Even mild exposure can bring on headaches or breathing problems over time, and the smell alone tells you something’s off. A simple air test shows what’s actually growing in your basement and how high the levels are, so you know exactly what you’re dealing with before it spreads.

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Long Island basement waterproofing company

Why Long Island Homeowners Choose ACM for Basement Waterproofing

For over 30 years, ACM has protected thousands of basements across Nassau and Suffolk counties. We’re a family-owned business, not a franchise, and we know how Long Island’s soil, water tables, and storms affect your foundation.

Local expertise. The sandy soil near Long Beach behaves nothing like the clay in Syosset. After 30 years, we know what each neighborhood demands.

Recognized and awarded. ACM is one of only three New York companies to receive the Basement Health Association’s Star Award, alongside multiple Best of Long Island and Angi Super Service awards.

Honest, no-pressure quotes. Free inspections with a real diagnosis. No high-pressure sales, no upsells you don’t need.

Serving All of Nassau and Suffolk Counties

CM provides basement waterproofing throughout Long Island, including all of Nassau County and Suffolk County. We serve Freeport, Garden City, Levittown, Wantagh, Syosset, Long Beach, Massapequa, Huntington, Smithtown, Babylon, Hicksville, Hempstead, Bay Shore, Patchogue, and surrounding communities

Schedule Your Free Waterproofing Inspection & Quote

If you live in Long Island and are dealing with basement water, you need ACM, your local waterproofing contractor for permanent solutions. Call us today for a free estimate. Call us today to get a free estimate and permanent waterproofing solutions.

Protect Your Home Today

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