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Case Study: Foundation Stabilization and Structural Crack Repair in Melville, NY
Foundation stabilization with helical piles and structural crack repair completed in Melville NY.

Project Overview

A homeowner in Melville, NY contacted Zavza Seal after noticing that the rear section of the home had started to sink. Cracks had developed in the basement foundation wall, and parts of the wood floor above the affected area no longer felt level. The homeowner wanted a permanent solution that would stop further settlement and restore the structural stability of the home.

The Problem

The inspection showed that the rear foundation was settling due to unstable soil conditions beneath the home. As the foundation moved downward, several structural cracks appeared in the basement wall. These cracks allowed moisture to enter the concrete and increased the risk of future water damage.

Inside the home, the movement of the foundation also caused the wood flooring above the damaged wall to become uneven. If left untreated, the settlement could have continued, leading to larger structural problems and more expensive repairs.

The homeowner needed a complete repair that would stabilize the foundation, seal the damaged concrete, and restore the affected floor to its original level.

Our Solution

After completing a full structural evaluation, the Zavza Seal team designed a repair plan that addressed the source of the problem instead of simply repairing the visible damage.

1. Foundation Stabilization with Helical Piles

Our crew carefully excavated the rear foundation and installed six heavy duty helical piles with engineered foundation brackets. Each pile was advanced into stable load bearing soil and installed to an ultimate capacity of 20 tons.

The new support system permanently transferred the weight of the foundation to stronger soil below the weak upper layers, helping prevent additional settlement.

To complete the installation, we formed a new step near the chimney where one of the helical piles was installed and then backfilled the excavation to restore the original grade around the home.

2. Structural Crack Repair

The basement foundation wall had three structural cracks totaling approximately 20 linear feet.

Each crack was professionally repaired using a multi step process.

We first removed loose material, dirt, and mineral deposits to expose clean concrete. Injection ports were installed every six inches along the cracks before injecting high strength epoxy and urethane to seal the damaged areas from within.

After the injection process, we applied Basecrete waterproofing cement over the repaired cracks, embedded reinforced fiberglass mesh for added strength, and finished with a second layer of waterproofing cement to create a durable and water resistant repair.

3. Floor Leveling

Once the foundation had been stabilized, our team removed the affected section of the wood flooring above the repaired wall. We carefully installed shims to restore the original floor elevation before reinstalling the flooring, creating a level and stable walking surface.

The Result

The rear foundation is now fully stabilized, significantly reducing the risk of future settlement. The repaired basement wall has regained its structural strength while providing improved resistance against water intrusion.

The wood flooring is once again level, giving the homeowner peace of mind that the home is both structurally sound and safer for everyday use.

By addressing the underlying cause of the settlement rather than only repairing the visible cracks, the homeowner received a long term solution that protects the value and integrity of the property.

Why the Homeowner Chose Zavza Seal?

The homeowner selected Zavza Seal because of our experience with foundation stabilization and structural repairs throughout Long Island. Every repair was completed using proven materials and installation methods designed for long term performance.

Our goal is always to solve the root cause of the problem while keeping homeowners informed throughout every stage of the project.

Need Foundation Repair in Melville, NY?

If you have noticed foundation cracks, uneven floors, or signs of settlement, Zavza Seal can help. Our experienced team provides professional foundation stabilization, basement waterproofing, structural crack repair, and crawl space solutions throughout Melville and the surrounding Long Island communities.

Contact Zavza Seal today to schedule a professional inspection and learn about the best repair 

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