Attic Insulation Contractors in Hempstead, NY

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What makes Zavza Seal


Licensed & Insured

Don’t take chances with unlicensed and uninsured contractors. We’re fully licensed and insured, ensuring your investment is safeguarded.

30-Year Warranty

We back our work with a 30-year warranty, demonstrating our commitment to long-lasting quality and durability.

Proactive Problem Solvers

Experience matters. We are proactive problem solvers. We identify and address issues before they become headaches, saving you thousands of dollars on repairs and remediations.

5 Star

Elevate your home with our 5-Star rated contracting, where premium quality meets a steadfast 30-year warranty commitment.

Community – Centric

We’re not just another service provider in your local area; we’re interwoven with the community. Our unwavering dedication leads us to uplift the regions we serve, one foundation repair project at a time.

What Our Customers Say

On Our Recent Basement Waterproofing Completed Works

Gregory Paragh

They complete the work to the specification they outlined or better, for a very reasonable price which they are willing to work with you on. Good people and great work.

Mike Delafraz

I was hesitant to accept their proposal since it was the best one! However, they arrived on time and were knowledgeable, respectful, and clean. Did more than expected and paid attention to any minor details. They even came an extra day to complete everything and ensure the Job was done to my 1000% Satisfaction.


The Zavza sealing company arrived promptly. The crew leader did an overview of the Job. Upon completion of the Job, The entire area was cleaned, and anything moved was replaced. Thanks for a great Job.

Zavza Seal: Your Top-Rated Basement Waterproofing Contractor New York


In New York’s unpredictable weather, protecting your basement from water damage is critical. Zavza Seal specializes in all aspects of water damage repair and prevention, combining local knowledge with decades of experience to offer you unmatched service and a 30-year warranty for peace of mind. We understand the importance of your home’s safety and are committed to providing the highest level of care and expertise. As part of the New York community, we’re here to offer free assessments and expert advice, tailored to your unique needs. Don’t let water damage threaten your home.

Call Zavza Seal Now! Let’s Ensure Your Basement Stays Dry and Secure!

Dial (631) 980-1800 Now to Schedule Your Free Assessment!


Basement Waterproofing Contractor New York - A Bucket Catching the Water from a Leak in the Ceiling

Preventing Water Damage: Basement waterproofing is essential to prevent water infiltration, protecting the foundation and structure of your home from potential damage caused by leaks and flooding.

Reducing Repair Costs: Investing in basement waterproofing may involve a basement waterproofing cost upfront, but it significantly reduces the likelihood of extensive and costly repairs due to water damage in the future.

Preserving Home Value: A waterproofed basement maintains the overall value of your property, as potential buyers are often deterred by water-related issues.

Mold Prevention: Waterproofing helps to create a dry environment, preventing mold and mildew growth, which can pose health hazards and compromise indoor air quality.

Increased Living Space: A dry and secure basement can be transformed into a usable living space, adding value to your home and expanding the functional areas available for your family.

Energy Efficiency: Waterproofing can contribute to energy efficiency by preventing dampness and reducing the workload on HVAC systems, ultimately saving on energy costs.

Enhanced Structural Integrity: Waterproofing safeguards the structural integrity of your home by preventing water from compromising the foundation, walls, and other vital components.

Peace of Mind: Knowing that your basement is waterproofed provides peace of mind, especially during heavy rainfall or adverse weather conditions, as you can trust that your home is well-protected.

Basement Waterproofing Contractor New York - Standing Water on a Basement Floor
Basement Waterproofing Contractor New York - A Blue and Silver Pump

Long-Term Cost Savings: While basement waterproofing may have an initial cost, the long-term savings on potential repairs, health-related expenses, and increased home value make it a financially wise investment.

Local Expertise: Searching for “basement waterproofing near me” ensures that you can leverage local expertise, allowing professionals to address specific climate and geological factors affecting your area.

Insurance Premiums: Some insurance providers may offer reduced premiums for homes with proper waterproofing measures in place, as it indicates a proactive approach to risk mitigation.

Types of
Basement Waterproofing

We have listed a few different types of basement waterproofing techniques for details and technical specifications. Use this guide to find out which type of basement waterproofing works for your family and your home.

Basement Waterproofing Contractor New York - A Drain without the Cover

Interior Sealants and Waterproof Coatings: Application of sealants and waterproof coatings on the interior surfaces of basement walls to create a barrier against water infiltration. This method is commonly used for poured concrete walls.

Exterior Waterproofing Membranes: Installation of waterproof membranes on the exterior of basement walls to prevent water from penetrating the foundation. This method is effective in addressing issues with soil pressure and hydrostatic pressure in Brooklyn, Queens and Long Island.

French Drain Installation: The French drain system involves the installation of a perforated pipe surrounded by gravel to redirect and manage groundwater away from the foundation. This helps in preventing water accumulation around the basement.

Sump Pump Installation: Sump pumps are installed in basements to pump out excess water that may accumulate in a sump pit. This is a crucial component of many waterproofing systems, helping to keep the basement dry.

Exterior Excavation and Waterproofing: This comprehensive approach involves excavating around the exterior of the foundation to apply waterproofing materials directly to the exterior walls. It is particularly effective in addressing structural issues and preventing water penetration.

Basement Waterproofing   Contractor New York -  External Water Sealing Around the Base of a Brick Home

How Does
Basement Waterproofing Work?

Home Insulation Services in Hempstead

Basement waterproofing works by employing various techniques to create a robust barrier against water infiltration, safeguarding the foundation and interior spaces of a home. Common methods include the application of interior sealants or waterproof coatings on basement walls, preventing water from entering through cracks or porous surfaces. Additionally, exterior approaches involve installing waterproof membranes, French drains, or conducting exterior excavation to address issues at the foundation’s outer perimeter. These methods collectively aim to redirect, block, or manage water, ensuring a dry and secure basement environment.

One key component of basement waterproofing is the installation of sump pump systems. Sump pumps effectively pump out accumulated water from a designated pit, preventing water buildup and reducing the risk of flooding in Brooklyn, Queens, and Long Island. Whether through interior or exterior strategies, basement waterproofing is a proactive measure that enhances a home’s resilience against water-related challenges, preserving its structural integrity and creating a healthier living space.

Reasons to Get
Basement Waterproofing

Basement waterproofing is essential to protect your home from the damaging effects of water infiltration. By investing in this preventive measure, you can avoid costly repairs associated with water damage to the foundation, walls, and valuable possessions stored in the basement of your Brooklyn, Queens, and Long Island homes.

Waterproofing not only preserves the structural integrity of your home but also reduces the risk of mold growth, ensuring a healthier indoor environment for your family. Overall, getting basement waterproofing offers long-term financial savings, increased home value, and the peace of mind that comes with a dry and secure living space.

Secure Your Home’s Future Today with Professional Basement Waterproofing! Call Zavza Seal at (631) 980-1800 Now to Schedule Your Free Assessment!

Basement Waterproofing Contractor New York - A Contractor Applying Cement to Basement Floor

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Our Service Area Zip Codes
In Long Island NY

Brooklyn NY
Brooklyn, NY 11201
Brooklyn, NY 11204
Brooklyn, NY 11209
Brooklyn, NY 11215
Brooklyn, NY 11217
Brooklyn, NY 11218
Brooklyn, NY 11219
Brooklyn, NY 11223
Brooklyn, NY 11228
Brooklyn, NY 11229
Brooklyn, NY 11230
Brooklyn, NY 11231
Nassau County NY
Albertson, NY 11507
Atlantic Beach, NY 11509
Baldwin, NY 11510
Bayville, NY 11709
Bellmore, NY 11710
Bethpage, NY 11714
Carle Place, NY 11514
Cedarhurst, NY 11516
East Meadow, NY 11554
East Norwich, NY 11732
East Rockaway, NY 11518
Elmont, NY 11003
Farmingdale, NY 11735
Farmingdale, NY 11737
Floral Park, NY 11001
Floral Park, NY 11002
Franklin Square, NY
Franklin Square, 11010
Freeport, NY 11520
Garden City, NY 11530
Garden City, NY 11531
Garden City, NY 11599
Glen Cove, NY 11542
Glen Head, NY 11545
Glenwood Landing, NY 11547
Great Neck, NY 11020
Great Neck, NY 11021
Great Neck, NY 11022
Great Neck, NY 11023
Great Neck, NY 11024
Great Neck, NY 11026
Great Neck, NY 11027
Greenvale, NY 11548
Hempstead, NY 11549
Hempstead, NY 11550
Hempstead, NY 11551
Hewlett, NY 11557
Hicksville, NY 11801
Hicksville, NY 11802
Hicksville, NY 11815
Hicksville, NY 11819
Hicksville, NY 11854
Inwood, NY 11096
Island Park, NY 11558
Jericho, NY 11753
Jericho, NY 11853
Lawrence, NY 11559
Levittown, NY 11756
Locust Valley, NY 11560
Long Beach, NY 11561
Lynbrook, NY 11563
Malverne, NY 11565
Manhasset, NY 11030
Massapequa, NY 11758
Massapequa Park, NY 11762
Merrick, NY 11566
Mill Neck, NY 11765
Mineola, NY 11501
New Hyde Park, NY 11040
New Hyde Park, NY 11042
Oceanside, NY 11572
Old Bethpage, NY 11804
Old Westbury, NY 11568
Oyster Bay, NY 11771
Plainview, NY 11803
Point Lookout, NY 11569
Port Washington, NY 11050
Port Washington, NY 11051
Port Washington, NY 11052
Port Washington, NY 11053
Port Washington, NY 11054
Port Washington, NY 11055
Rockville Centre, NY 11570
Rockville Centre, NY 11571
Roosevelt, NY 11575
Roslyn, NY 11576
Roslyn Heights, NY 11577
Sea Cliff, NY 11579
Seaford, NY 11783
Syosset, NY 11773
Syosset, NY 11791
Uniondale, NY 11553
Uniondale, NY 11555
Uniondale, NY 11556
Valley Stream, NY 11580
Valley Stream, NY 11581
Valley Stream, NY 11582
Wantagh, NY 11793
West Hempstead, NY 11552
Westbury, NY 11590
Williston Park, NY 11596
Woodbury, NY 11797
Woodmere, NY 11598
Suffolk County NY
Amagansett, NY 11930
Amityville, NY 11701
Aquebogue, NY 11931
Babylon, NY 11702
Bay Shore, NY 11706
Bayport, NY 11705
Bellport, NY 11713
Blue Point, NY 11715
Bohemia, NY 11716
Brentwood, NY 11717
Bridgehampton, NY 11932
Brightwaters, NY 11718
Brookhaven, NY 11719
Calverton, NY 11933
Center Moriches, NY 11934
Centereach, NY 11720
Centerport, NY 11721
Central Islip, NY 11722
Cold Spring Harbor, NY 11724
Commack, NY 11725
Copiague, NY 11726
Coram, NY 11727
Cutchogue, NY 11935
Deer Park, NY 11729
East Hampton, NY 11937
East Islip, NY 11730
East Marion, NY 11939
East Moriches, NY 11940
East Northport, NY 11731
East Quogue, NY 11942
East Setauket, NY 11733
Eastport, NY 11941
Farmingville, NY 11738
Fishers Island, NY 6390
Great River, NY 11739
Greenlawn, NY 11740
Greenport, NY 11944
Hampton Bays, NY 11946
Hauppauge, NY 11788
Holbrook, NY 11741
Holtsville, NY 00501
Holtsville, NY 00544
Holtsville, NY 11742
Huntington, NY 11743
Huntington Station, NY 11746
Islandia, NY 11749
Islip, NY 11751
Islip Terrace, NY 11752
Jamesport, NY 11947
Kings Park, NY 11754
Lake Grove, NY 11755
Laurel, NY 11948
Lindenhurst, NY 11757
Manorville, NY 11949
Mastic, NY 11950
Mastic Beach, NY 11951
Mattituck, NY 11952
Medford, NY 11763
Melville, NY 11747
Melville, NY 11760
Melville, NY 11775
Middle Island, NY 11953
Miller Place, NY 11764
Montauk, NY 11954
Moriches, NY 11955
Mount Sinai, NY 11766
Nesconset, NY 11767
New Suffolk, NY 11956
North Babylon, NY 11703
Northport, NY 11768
Oakdale, NY 11769
Ocean Beach, NY 11770
Orient, NY 11957
Patchogue, NY 11772
Peconic, NY 11958
Port Jefferson, NY 11777
Port Jefferson Station, NY 11776
Quogue, NY 11959
Remsenburg, NY 11960
Ridge, NY 11961
Riverhead, NY 11901
Rocky Point, NY 11778
Ronkonkoma, NY 11779
Sag Harbor, NY 11963
Sagaponack, NY 11962
Saint James, NY 11780
Sayville, NY 11782
Selden, NY 11784
Shelter Island, NY 11964
Shelter Island Heights, NY 11965
Shirley, NY 11967
Shoreham, NY 11786
Smithtown, NY 11787
Sound Beach, NY 11789
South Jamesport, NY 11970
Southampton, NY 11968
Southampton, NY 11969
Southold, NY 11971
Speonk, NY 11972
Stony Brook, NY 11790
Stony Brook, NY 11794
Upton, NY 11973
Wading River, NY 11792
Wainscott, NY 11975
Water Mill, NY 11976
West Babylon, NY 11704
West Babylon, NY 11707
West Islip, NY 11795
West Sayville, NY 11796
Westhampton, NY 11977
Westhampton Beach, NY 11978
Wyandanch, NY 11798
Yaphank, NY 11980
Queens County NY
Addisleigh Park, NY 11433
Addisleigh Park, NY 11434
Arverne, NY 11692
Astoria, NY 11101
Astoria, NY 11102
Astoria, NY 11103
Astoria, NY 11104
Astoria, NY 11105
Astoria, NY 11106
Bayside, NY 11359
Bayside, NY 11360
Bayside, NY 11361
Bay Terrace, NY 11360
Beechhurst, NY 11357
Belle Harbor, NY 11694
Bellerose, NY 11426
Breezy Point, NY 11697
Briarwood, NY 11435
Broad Channel, NY 11693
Cambria Heights, NY 11411
Chinatown, NY 10013
College Point, NY 11356
Corona, NY 11368
Douglaston–Little Neck, NY 11362
Douglaston–Little Neck, NY 11363
East Elmhurst, NY 11369
East Elmhurst, NY 11370
East Elmhurst, NY 11371
Edgemere, NY 11690
Elmhurst, NY 11380
Far Rockaway, NY 11690
Far Rockaway, NY 11691
Far Rockaway, NY 11692
Far Rockaway, NY 11693
Far Rockaway, NY 11694
Far Rockaway, NY 11695
Far Rockaway, NY 11697
Floral Park, NY 11004
Floral Park, NY 11005
Flushing, NY 11374
Forest Hills, NY 11375
Fresh Meadows, NY 11365
Fresh Meadows, NY 11366
Fresh Pond, NY 11385
Glendale, NY 11385
Glen Oaks, NY 11004
Hollis, NY 11423
Howard Beach, NY 11414
Jackson Heights, NY 11372
Jamaica, NY 11411
Jamaica, NY 11412
Jamaica, NY 11413
Jamaica, NY 11414
Jamaica, NY 11415
Jamaica, NY 11416
Jamaica, NY 11417
Jamaica, NY 11418
Jamaica, NY 11419
Kew Gardens, NY 11415
Kew Gardens, NY 11418
Kew Gardens Hills, NY 11367
Laurelton, NY 11413
Long Island City, NY 11101
Long Island City, NY 11102
Long Island City, NY 11103
Long Island City, NY 11104
Long Island City, NY 11105
Long Island City, NY 11106
Long Island City, NY 11109
Middle Village, NY 11379
Neponsit, NY 11694
Ozone Park, NY 11416
Ozone Park, NY 11416
Pomonok, NY 11365
Queens Village, NY 11427
Queens Village, NY 11428
Queens Village, NY 11429
Rego Park, NY 11374
Richmond Hill, NY 11418
Ridgewood, NY 11385
Rochdale Village, NY 11434
Rockaway Beach, NY 11693
Rockaway Park, NY 11694
Rosedale, NY 11413
Rosedale, NY 11422
Roxbury, NY 12474
St. Albans, NY 11412
South Ozone Park, NY 11420
South Ozone Park, NY 11436
Springfield Gardens, NY 11413
Sunnyside, NY 11104
Whitestone, NY 11357
Woodhaven, NY 11421
Woodside, NY 11377