The Problem: Structural and Non-Structural Basement Cracks Compromising Integrity
A homeowner in Ridge, NY reached out to Zavza Seal after noticing multiple cracks in their basement floor and walls. Some cracks were minor and non-structural, while others showed clear signs of structural damage, including detachment and water intrusion. These issues not only threatened the structural integrity of the basement but also allowed moisture into the space, increasing the risk of mold growth and further deterioration.
The property owner needed a reliable solution to repair both structural and non-structural cracks while ensuring long-term waterproofing. They chose Zavza Seal for our expertise as a trusted basement crack repair and waterproofing contractor in Ridge, NY.
The Solution: Comprehensive Structural Reinforcement and Waterproofing
Our team implemented a carefully planned, multi-step process to restore the basement and prevent future damage. To protect the rest of the property, we began by moving all personal property and sealing the work area with floor-to-ceiling plastic sheets to create a hermetically sealed, insulated environment.
We addressed the issues in four distinct subject areas:
1. Basement Concrete Floor – Six Non-Structural Cracks
- Chased and ground each crack using a diamond blade to expose clean concrete.
- Applied hydraulic cement to fill the cracks.
- Coated the surface with 7,000 PSI waterproofing cement.
- Installed reinforced 4.5 oz fiberglass mesh to enhance strength.
- Applied a second coat of 7,000 PSI cement to finish.
2. Basement Concrete Floor – One Structural Crack with Detachment
- Chased and ground the entire crack to remove loose material and expose sound concrete.
- Cut deep perpendicular slots across the crack every 18 inches.
- Filled each slot with structural epoxy.
- Installed non-corrosive carbon stitches in the epoxy-filled slots, each rated to pull 6,500 pounds, restoring structural integrity.
- Filled the crack cavity with high-strength mortar.
- Installed reinforced fiberglass mesh over the mortar while damp.
- Finished with a layer of 7,000 PSI waterproofing cement.
3. Basement Concrete Walls – Five Non-Structural Cracks
- Ground each crack to create a clean surface.
- Filled with hydraulic cement.
- Applied an initial coat of Basecrete waterproofing cement.
- Installed reinforced 4.5 oz fiberglass mesh.
- Applied a second coat of Basecrete to complete.
4. Basement Concrete Walls – Four Structural Cracks
- Ground both sides of each crack to remove loose material and expose bare concrete.
- Injected the cracks with a urethane and epoxy formulation to fill voids and waterproof the structure.
- Covered the injected areas with a layer of Basecrete.
- Installed reinforced fiberglass mesh into the Basecrete for added strength.
- Applied a second layer of Basecrete to complete the repair.

The Results: A Stronger, Waterproof Basement
Thanks to Zavza Seal’s meticulous process, the homeowner now has a structurally sound and fully waterproofed basement. The combination of epoxy injections, carbon stitches, high-strength mortars, and multiple layers of waterproofing cement ensures long-term durability and peace of mind.
If you are experiencing similar issues, trust Zavza Seal as your basement crack repair and waterproofing contractor in Ridge, NY.