Professinal & experienced – EST. 1995

Waterproofing Service

National Grid Rebate Program

* Terms & conditions apply.


Our credibility as a company, is built by establishing a level of trust with our clients and we strive to further our credentials everyday.


Taking initiative, negotiating time honestly, and staying aligned with our personal and work values. That’s what integrity means to us.


Each and every member of our company is accountable of their words and actions through their belief in transparency in everything.

Our Service Areas

  • Brooklyn
  • Nassau
  • Queens
  • Suffolk

(631) 980-1800

Did you know?

Benefits of Waterproofing

  • It stops mold and mildew from penetrating the floor and walls.
  • Waterproofing is crucial for the stability and safety of structures.
  • It lowers cleaning and maintenance expenses.
  • Cleaning up after a major downpour or flood is much easier when the buildings are waterproof.

Get A Free Estimate Now…

No obligation.


Get Started Is As Easy as 1, 2, 3

1. Give Us a Call

Give us a call and talk with one of our waterproofing experts or fill out the free estimate form on this page and we will call you back within 24 hours.

2. Explain the Problem

On your call we’ll ask about your basement or foundation issues and answer any questions you have. There is no obligation on this call.

3. Schedule an Appointment

We’ll setup a time to come out to your home, look at the issues you are having, make recommendations and give you free waterproofing estimate.

Before & After



Problem: The basement had old crumbling walls that enabled water to seep in and pool on the floor. Basement has typically 2 inches of water with major rain.
Basement had issues of mold and damp smells.

Solution: Zavza Seal team grinded the walls to remove old plaster and paint and applied waterproofing cement in order to waterproof the walls and steps, ensure the structure is watertight, and solve the basement waterproofing problem.

Our Professional Promise

  • We here at Zavza Seal LLC are licensed and insured.
  • We believe in honesty, integrity, and accountability as a company and therefore these are a part of our core values.
  • We know how essential it is to have a home that is both stables in its foundation and functions as how a home should.
  • Our promise is that there are no repairs, no contracting jobs that are too demanding or too challenging for us to do. This is why we have been in the business for 23 years now.

Client Testimonials

Professionalism, Punctuality, Quality, and Value!
Extremely knowledgeable professional reliable thorough crew from initial consultation straight through to the completion with detailed explanation & cleanup.
My basement water issues were dealt with well thought out suggestions using Hydraulic Cement, Bascrete & Fiberglass Mesh


Comfort Is Only a Phone Call Away


Let our friendly & experienced insulation experts perform an advanced multi-point inspection
of your home. We guarantee that we can get your home more comfortable year round !
Schedule Your FREE Estimate Today…

Why Hire Us?

We focus only on waterproofing and insulation services


We focus only on waterproofing to ensure you work only with the best

We use only high quality products for different Types of Insulation

Quality Products

We use only high quality materials to ensure years of uncompromising performance

Our different Types of Insulation service is very cost effective

Cost Effective

We deliver quality waterproofing service at reasonable prices

We provide five star services

5 Star Service

Our team is committed to delivering 100% customer satisfaction

5 Star Google & Home Advisor Reviews

100% Google's Five Star Reviews
100% Home Advisor Five Star Reviews