Project by Zavza Seal LLC
Project Location
Rocky Point, NY
The Problem
A homeowner in Rocky Point contacted Zavza Seal LLC after noticing a visible structural crack forming directly beneath the spandrel beam of their property. The affected area spanned approximately 5 linear feet. Upon inspection, our experts identified that the crack posed a potential structural concern, as well as a pathway for water intrusion. The issue was particularly alarming because it was located near a key support area of the building — the spandrel beam — and threatened the stability of the surrounding foundation and porch.
Further assessment revealed signs of water penetration above the beam, indicating that the crack was not only a structural issue but also a waterproofing concern. It became critical to take immediate and thorough steps to stabilize the foundation and prevent further deterioration.
The Solution
To address both the structural and waterproofing concerns, Zavza Seal LLC implemented a multi-step crack repair system that combined high-strength structural reinforcement with durable waterproofing techniques:
1. Crack Preparation
Our team began by raking out and cleaning the full length and depth of the crack to eliminate loose materials and contaminants. This ensured maximum bonding for the repair materials to follow.
2. Mortar Reinforcement
We then filled the crack with high-strength mortar, restoring immediate structural integrity and preventing further movement. This stabilized the base of the affected area.
3. Carbon Fiber Stitching
To stop any further separation of the foundation, carbon fiber stitches were installed every 12 inches across the crack. This advanced technique is known for its high tensile strength and is ideal for stabilizing structural components without invasive reconstruction.
4. Epoxy Urethane Injection
Next, we injected the crack with a specially formulated epoxy urethane blend, sealing it internally. This material penetrates deep into the crack, creating a flexible, waterproof seal that resists future water entry and structural stress.
5. Waterproofing Layer with Fiberglass Mesh
To complete the repair, we applied two coats of Basecrete waterproofing cement, embedding a 4-inch-wide, 4.5 oz fiberglass mesh between the layers. This waterproofing membrane provides added durability and prevents future moisture penetration.
6. Exterior Porch Modification
Recognizing the potential for ongoing water intrusion above the spandrel beam, our crew removed several rows of the porch exterior. This allowed us to inspect and seal any signs of water infiltration from the top side of the crack, ensuring a comprehensive and lasting repair.
Outcome
The combination of structural and waterproofing techniques not only eliminated the immediate risk associated with the crack but also protected the homeowner against future damage. The use of carbon fiber stitches and epoxy urethane injection provided a high-strength, long-lasting solution without the need for major reconstruction.
Zavza Seal LLC’s team completed the project on schedule with minimal disruption to the homeowner. The customer was extremely satisfied with the professionalism, technical knowledge, and care taken to address the issue both visibly and at its root.
Conclusion
This Rocky Point project highlights Zavza Seal LLC’s expertise in structural crack repair and foundation waterproofing. Our team’s proactive and detail-oriented approach ensured the long-term stability of the home while preserving its structural integrity.
If you’re facing structural cracks or foundation issues in Rocky Point or anywhere across Long Island, Brooklyn, or Queens — Zavza Seal LLC is your trusted partner for reliable, code-compliant solutions.
📞 Contact us today for a free inspection and quote.