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Waterproofing Done Right!

Zavza Seal LLC – Long Island NY:

Zavza Seal is a locally-owned & operated premier waterproofing service provider in Long Island communities with a wealth of experience.

Our specialty includes:

✅ High-Quality Products     ✅ Cost Effective
✅ Trusted and Reliable        ✅ 20+ Years of Experience
✅ Insured and Licensed      ✅ 30 Years of Warranty
✅ 5 Star Service      ✅ 100% Customer Satisfaction

Call us now for a FREE ESTIMATE (631) 980-1800.

Our trust and reviews

Satisfied Customer Stories

Hear what our clients are saying about our services:

Gregory Paragh

basement five star service
“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.”


basement five star service
“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.”

Mike Delafraz

basement five star service
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.

Protect Your Foundation with an Expert Basement Wall Waterproofing Company

When it comes to safeguarding your home’s foundation, one crucial aspect that should never be overlooked is basement wall waterproofing. As water damage poses a significant threat to the structural integrity of your property, understanding the importance of basement wall waterproofing and implementing the right techniques and products is essential. In this comprehensive guide, we will delve into the intricacies of basement wall waterproofing, exploring both interior and exterior solutions, as well as key details to consider for effective water leak repair.

Basement Waterproofing Wall: The Foundation’s Shield

The basement serves as a vital foundation component, supporting the weight of the entire structure. It is crucial to address any vulnerabilities in its walls, which are particularly susceptible to water infiltration. Basement wall waterproofing acts as the ultimate defense against moisture, ensuring the longevity and stability of your home.

Interior Basement Wall Waterproofing: Keeping Water at Bay

When dealing with water infiltration from within your basement, interior basement wall waterproofing is the primary line of defense. This approach involves installing a specialized membrane that acts as a barrier against moisture. By creating a waterproof seal, the interior basement wall waterproofing membrane prevents water from seeping through the walls and damaging the foundation.

Exterior Basement Wall Waterproofing: Protecting from the Outside In

While interior waterproofing addresses water issues from the inside, it is equally important to shield your basement walls from external water sources. Exterior basement wall waterproofing tackles the problem at its source, preventing water from reaching the walls in the first place. This method involves the application of waterproofing products and the installation of a durable membrane on the outside surface of the basement walls.

Basement Wall Waterproofing Details: Factors to Consider

To ensure the effectiveness of your basement wall waterproofing, attention to detail is crucial. Here are some essential factors to consider:

  1. Type of Waterproofing Membrane: Selecting the right basement wall waterproofing membrane is vital. Options range from bituminous coatings and cementitious waterproofing to more advanced elastomeric membranes. Consulting with a professional can help determine the most suitable choice for your specific needs.
  2. Drainage System: Alongside basement wall waterproofing, a well-designed drainage system is essential for redirecting water away from your foundation. Incorporating features such as French drains, gutters, and downspouts will help mitigate potential water accumulation.
  3. Sealing Wall Cracks: Even with the most robust waterproofing measures in place, existing cracks in basement walls can compromise their integrity. Properly sealing these cracks with specialized sealants will prevent further water infiltration and enhance the effectiveness of your waterproofing efforts.

Exterior Basement Wall Waterproofing Products: The Ultimate Protection

To ensure optimum protection against water damage, a range of exterior basement wall waterproofing products are available in the market. These products are specifically designed to withstand the harsh external elements and provide long-lasting results. Examples include:

  1. Polymer-modified Asphalt Emulsion: This versatile waterproofing product offers excellent adhesion to various surfaces and boasts exceptional durability.
  2. Spray-Applied Waterproofing Membranes: These advanced coatings provide a seamless, fully adhered barrier against water intrusion. They are highly effective in protecting the basement walls from the external environment.
  3. Waterproofing Sheet Membranes: These pre-formed membranes offer superior waterproofing capabilities and are ideal for areas with high hydrostatic pressure.

Interior Basement Wall Waterproofing Membrane: A Reliable Shield

For interior basement wall waterproofing, the installation of a high-quality membrane is of utmost importance. A popular choice is the interior basement wall waterproofing membrane, which creates a robust barrier against water infiltration. This membrane is applied directly to the interior surface of the basement walls, effectively preventing moisture from seeping through and causing damage.

Basement Wall Water Leak Repair: Addressing the Issue

In the unfortunate event of a water leak in your basement walls, prompt and effective repair is crucial to prevent further damage. Professional water leak repair services utilize specialized techniques to identify the source of the leak and implement appropriate solutions. These may include crack injection, drainage system repairs, or the application of additional waterproofing materials.


Protecting your home’s foundation from water damage starts with basement wall waterproofing. Whether through interior or exterior methods, implementing the right techniques and utilizing reliable products will ensure the longevity and stability of your property. By considering crucial details and promptly addressing any water leaks, you can safeguard your basement walls and enjoy peace of mind for years to come. Invest in professional expertise to create an impenetrable shield for your foundation, preventing water infiltration and potential structural issues.