Location: Dix Hills, NY
Service Category: Foundation Wall Repair & Basement Waterproofing
Problem
A homeowner in Dix Hills, NY, reached out to Zavza Seal with concerns about multiple structural cracks that had developed in the foundation walls of their basement. During our thorough inspection, our team identified four major structural cracks, all of which were actually separations in the wall, rather than superficial cracks. These separations posed a risk to the structural integrity of the home and required immediate attention.
Additionally, the cracks were allowing moisture intrusion, especially around the thru-wall waste line and window wells, leading to concerns about long-term water damage. The existing patches were rough, and in several areas, the cracks were reappearing. A previous attempt to repair the cracks had not held up due to lack of reinforcement and proper waterproofing.
Solution
To permanently stabilize the foundation and prevent further issues, the Zavza Seal team implemented a comprehensive crack repair and waterproofing solution that included carbon fiber reinforcement, epoxy crack injection, and advanced waterproofing techniques.
Step-by-Step Execution:
1. Structural Crack Stabilization with Carbon Fiber Stitches
- We cleaned and raked out all four cracks thoroughly to remove debris and ensure proper adhesion.
- The cracks were then filled along their entire length and depth using high-strength mortar, which provided initial stabilization.
- To prevent future separation of the foundation, we installed carbon fiber stitches at 12-inch intervals across the cracks. This method adds significant tensile strength and reinforcement to the wall.
2. Vertical Drilling and Epoxy Injection
- Our team drilled vertically every 6 inches along the length of each crack to prepare for deep-set injection.
- We used epoxy urethane formulations to inject into the cracks, which not only stabilized them but also acted as a long-term waterproofing solution by sealing the gaps completely.
3. Advanced Waterproofing Using Basecrete System
- After crack stabilization, we applied reinforced waterproofing using Basecrete brand fiberglass mesh cement, rated at 7,000 PSI for strength.
- This was layered in an 8-inch wide strip over each crack, using 4.5 oz fiberglass mesh and finished with a hard troweled application for a smooth, durable surface.
- The rough patches from previous repairs were polished using a grinding stone, then finished with Loctite white coating as a primer for future wall painting.
4. Window Well Drainage and Thru-Wall Pipe Waterproofing
- We cleaned out one existing window well, disposed of debris, and installed a new self-sustaining drainage system laid on a fresh gravel bed—all at no additional charge.
- All four window wells were cleaned and filled with new gravel to maintain proper drainage and reduce hydrostatic pressure near the foundation.
- At the thru-wall waste line, we performed a full clean-out and waterproofing of the pipe joint to prevent seepage—also included at no extra cost.
5. Final Waterproofing on Reappearing Crack Areas
- For areas where cracks had reappeared through previous patch jobs, we applied a new layer of reinforced Basecrete fiberglass mesh waterproofing cement to ensure complete sealing and surface uniformity.

Results
This project in Dix Hills was successfully completed within the estimated timeframe. The structural cracks were fully stabilized, and the basement now has an added layer of reinforcement and waterproofing protection. The carbon fiber stitch system ensures that future wall separations will not occur. The client was especially pleased with the no-cost additions such as the window well clean-out, gravel installation, and thru-wall pipe waterproofing.
Why Choose Zavza Seal in Dix Hills, NY
Zavza Seal continues to be a trusted name for foundation wall repair and basement waterproofing across Dix Hills, Long Island, Queens, and Brooklyn. We use advanced materials, proven methods like carbon fiber stitching, and offer value-added services at no extra cost. Whether it’s structural crack repair or preventive waterproofing, our team ensures peace of mind for homeowners.
Need Help with Structural Cracks in Dix Hills or Nearby?
Contact Zavza Seal today to schedule your free inspection and get the long-term protection your foundation needs. Call now or visit our website to learn more about crack repair, epoxy injection, and foundation waterproofing services.