Location:
Northport, NY
Project Type:
Foundation Crack Repair and Waterproofing
Property Type:
Residential
The Problem
A homeowner in Northport, NY discovered three visible structural cracks in the foundation walls of their residential property. These foundation cracks were allowing water and moisture intrusion, creating a serious risk of mold growth, structural weakening, and long-term property damage.
Upon inspection, Zavza Seal confirmed that the foundation cracks were not only compromising the structural integrity of the building but were also a pathway for water to penetrate the basement during heavy rain.
If left untreated, these cracks would widen over time, leading to costly repairs and potential safety hazards.
Our Solution
To address the issue effectively and permanently, Zavza Seal deployed a multi-step crack repair and waterproofing system specifically designed for structural foundation restoration.
Step 1: Surface Preparation
- Our crew began by chasing and grinding the affected areas using diamond blades.
- This step removed dirt, mildew, and loose materials to expose the original cement, ensuring a clean and solid surface for injection and coating.
Step 2: Injection Access Setup
- We then drilled precise holes along the crack lines to install access ports for injection.
- These ports allow us to directly inject high-performance sealants deep into the foundation cracks.
Step 3: Crack Injection with Urethane and Epoxy
- Using a two-stage injection method, we filled the cracks with urethane to block moisture and epoxy to bond and reinforce the concrete structure.
- This method ensures both waterproofing and structural repair at the deepest level.
Step 4: Surface Waterproofing with Basecrete
- Once the injection was complete, we applied a first layer of Basecrete waterproofing cement to the surface of the repaired cracks.
- Basecrete is a high-strength, flexible, and waterproof cement formulated for concrete restoration and moisture protection.
Step 5: Reinforced Mesh Installation
- To further reinforce the repaired areas, we installed 4.5 oz fiberglass mesh, embedded into the waterproofing cement.
- This mesh acts as a secondary reinforcement layer that strengthens the surface and prevents future cracking.
Step 6: Final Waterproofing Coat
- Finally, we applied a second coat of Basecrete waterproofing cement, completing the sealing and structural stabilization process.
The Result
✔ Fully Sealed Foundation Cracks
All three cracks were completely sealed from both moisture and structural strain.
✔ Improved Structural Integrity
The epoxy injection bonded the concrete to restore the strength and load-bearing capacity of the foundation.
✔ Waterproof and Protected Basement
The multi-layered Basecrete application ensured long-term waterproofing protection.
✔ Enhanced Property Value and Safety
The homeowner now enjoys peace of mind knowing that their foundation is structurally sound and protected against water intrusion.
Why Zavza Seal for Foundation Crack Repair in Northport, NY
Zavza Seal is a trusted name in foundation repair, structural restoration, and basement waterproofing in Northport, NY and surrounding Long Island communities. Our use of industrial-grade materials, including Basecrete, epoxy, and urethane, ensures every repair is durable, code-compliant, and built to last.
Need Foundation Crack Repair in Northport?
Whether you have a small hairline crack or visible structural damage, Zavza Seal has the tools and expertise to restore your foundation. We protect homes from water and structural threats using proven systems and high-performance products.
📞 Contact us today to schedule a free inspection and estimate.