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Foundation Waterproofing Patchogue, NY

Local Foundation and Basement Waterproofing Specialists in Patchogue, NY

Comprehensive waterproofing solutions for lasting structural integrity.

Dimpled drainage membrane on a concrete foundation wall
Photo 1 of 3: Foundations · Drainage membrane
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Service: Foundations

When do you need it?

Prefer to talk? Call (631) 333-6373

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  • FamilyOwned & run on Long Island
  • 40 Yearsof generational experience
  • 400+Completed projects
  • FreeNo-obligation estimates
  • Licensed& fully insured

Keep Water Out of Your Basement for Good

Patchogue's older homes near the village, the river and the bay often sit on foundations that were built long before modern waterproofing. Combine that with groundwater close to the surface on the South Shore, and damp basements, musty smells and creeping cracks are a common story.

Promaster Maintenance Corp waterproofs foundations and basements throughout Patchogue, finding where water gets in and stopping it at the source. We also work with homeowners in East Patchogue, North Patchogue, Blue Point and Bayport.

Black drainage basin set in an excavated hole
Dry, finished basement with gray walls and a concrete floor
Trench dug along a house foundation for exterior waterproofing

Neighbors Who Called Us

Real reviews from homeowners across Suffolk County, pulled live from Google. See why Patchogue homeowners choose Promaster. (631) 333-6373.

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Signs Your Foundation Needs Waterproofing in Patchogue

In an older Patchogue basement, watch for:

Water seeping in at the base of a basement wall
  • A musty smell or patches of mold
  • Peeling paint or bubbling on basement walls
  • White, chalky efflorescence on concrete or block
  • Water or dampness on the floor or walls
  • Cracks in foundation walls or floors
  • All of these show moisture moving through the foundation, and they get worse with every heavy rain.

Exterior Foundation Waterproofing in Patchogue, NY

Older foundations rarely had the protection modern codes call for. The International Residential Code now requires below-grade foundation walls to be dampproofed, and waterproofed where groundwater is high. Our exterior process is:

  1. Excavating along the foundation to expose the walls
  2. Cleaning and repairing cracks in the old concrete
  3. Applying a waterproofing membrane or bentonite barrier
  4. Installing drainage to carry water away
  5. Backfilling and grading so surface water flows away from the house

Exterior waterproofing gives an older foundation the protection it was never built with.

Orange drain pipe being laid in a trench
Sump pump pit with white PVC discharge piping

Interior Basement Waterproofing and Drainage in Patchogue, NY

On a tight village lot, digging around the whole house is not always possible. An interior system manages the water instead. We install:

Interior drainage relieves the hydrostatic pressure that pushes groundwater through old cracks and joints.

  • Interior waterproofing coatings and sealants
  • French drains to collect water along the foundation
  • Sump pumps that remove collected water automatically

Call our foundation waterproofing experts today on (631) 333-6373

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Foundation and Basement Crack Repair in Patchogue, NY

Older foundations develop cracks over time, and each one is a route for water. We repair:

Moisture meter held against a basement wall
  • Foundation wall cracks
  • Basement floor and slab cracks
  • Leaks around pipes and wall joints
  • We check whether a crack is caused by settling or structural movement first, because that determines how it should be repaired.

Crawl Space Repairs and Foundation Underpinning

Some of Patchogue's older homes sit over crawl spaces, or on foundations that have settled over the decades. We provide:

  1. Crawl space repairs for moisture, rot and damaged supports
  2. Foundation underpinning to stabilize settling or sinking foundations

Getting the structure stable first helps your waterproofing work properly.

Corner of an excavated foundation wall with black waterproof coating

How Much Does Foundation Waterproofing Cost in Patchogue, NY?

Older foundations vary a lot, so we price each Patchogue job after a free, no-obligation inspection. The main cost factors are:

  • The condition of the existing foundation
  • Exterior waterproofing, an interior system or both
  • The number of walls involved
  • Access on a tight lot
  • Crack repairs
  • Any crawl space or underpinning work
Why homeowners choose us

Why Choose Promaster Maintenance Corp for Foundation Waterproofing in Patchogue, NY

Older Patchogue homes need an honest diagnosis before any digging starts. With us, you get:

New curved asphalt driveway with paver edging and the Promaster truck by Promaster Maintenance Corp, Long Island, NY

A detailed inspection to find where and why water is entering

A customized solution that suits an older foundation

Expert repairs by a licensed, insured and trained team

A thorough cleanup after the job

40 years of generational experience and over 400 completed projects

40YearsOf generational experience
400+Completed projects
  • Family owned
  • Rapid response
  • Premium service
Accredited & trusted

Rated and reviewed by Long Island homeowners

Customers describe our team as professional from start to finish. Call Promaster Maintenance Corp at (631) 333-6373 to talk about your Patchogue basement.

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Foundation Waterproofing FAQs for Patchogue, NY

Straight answers from the Promaster team.

Yes. Exterior waterproofing gives older foundations the protection they were built without, and interior drainage is an option where excavation is not practical. We inspect first and recommend the right approach.

More Ways We Can Help

Looking for a service other than Foundation Waterproofing in Patchogue?

We provide a whole range of masonry, paving and roofing services for our Patchogue clients:

Not in Patchogue? Still looking for Foundation Waterproofing near you?

Including Medford, Ronkonkoma, Shirley, Islip, Brentwood & Babylon:

We also provide Foundation Waterproofing in Huntington and Montauk.