Client Location: Islip, NY
Project Type: Structural Foundation Repair and Waterproofing
Service Provider: Zavza Seal LLC

Project Overview

In Islip, NY, a residential property was experiencing significant water intrusion and structural integrity issues in three exterior cinder block foundation walls, spanning approximately 90 linear feet. The compromised foundation threatened the long-term durability of the home, necessitating a comprehensive solution that addressed both the structural weaknesses and water intrusion concerns.

Zavza Seal LLC was entrusted with this critical project due to our proven expertise in foundation repair in Islip, NY, and waterproofing solutions in Islip, NY across Long Island, Brooklyn, and Queens.

Client’s Challenge

The client observed:

• Persistent water intrusion at the foundation wall/floor joint.
• Compromised structural integrity of the lower cinder blocks.
• Concern over potential long-term damage to the foundation and interior spaces.

These issues needed a long-lasting solution that reinforced the foundation while preventing future water intrusion.

Diagnosis and Proposed Solution

Upon inspection, we determined that the best course of action was a multi-step repair process focusing on:

• Enhancing the foundation’s structural strength.
• Implementing an effective drainage and waterproofing system.

Our proposed solution involved creating a reinforced concrete belt, improving drainage, and applying a vapor barrier to mitigate water intrusion.

Scope of Work

1. Drain Trench Installation

• Trench Cutting: We cut a drain trench along the foundation wall/floor joint to expose the footing.
• Holes in Cinder Blocks: Holes were cut in the lowest row of cinder blocks (two per block) to facilitate drainage and repair.

2. Surface Preparation

• Grinding: The lower 8 inches of the foundation wall were ground to remove damaged areas and expose the bare concrete surface.
• Debris Removal: All debris and dirt were cleared from the interior of the cinder blocks and the footing.

3. Drainage System Installation

• Gravel Base: A 2-inch layer of gravel was installed in the trench and inside the bottom row of cinder blocks.
• Perforated Pipe: We laid a 1½-inch perforated pipe in the trench and connected it to the existing drainage system on the west side of the basement.
• Gravel Enclosure: The perforated pipe was enveloped completely with gravel to ensure proper drainage.

4. Vapor Barrier Application

• A vapor barrier was installed over the gravel, covering the footing and the interior of the cinder blocks to prevent moisture infiltration.

5. Reinforced Concrete Belt Construction

• Concrete Pouring: High-strength 4,000 PSI concrete was poured to cover the gravel and vapor barrier. The concrete layer was at least 1 inch thick on all sides.
• Rebar Insertion: While the concrete was still semi-wet, 7-inch-long #4 rebars were inserted for additional reinforcement.
• Formwork: We established 8-inch-high lumber forms, 4 inches away from the foundation walls, to create the reinforced concrete belt.
• Final Pour: A 4-inch by 8-inch concrete belt was poured along the foundation walls, extending into the cinder block interiors to enhance structural strength.
• Form Removal: After curing, the forms were removed to complete the installation.

Temporary Structural Support

During the repair process, cutting into the bottom row of cinder blocks temporarily compromised the foundation’s integrity. To mitigate this, we provided temporary structural support to the residence, ensuring safety throughout the project.

Results and Benefits

The project delivered the following key benefits:

1. Enhanced Structural Integrity: The reinforced concrete belt significantly strengthened the foundation by extending the footing’s support 8 inches up into the cinder blocks. This made the structure more robust than when it was originally constructed.
2. Effective Water Intrusion Prevention: The new drainage system, gravel bed, and vapor barrier effectively mitigated water intrusion, safeguarding the basement from future moisture issues.
3. Long-Term Durability: By combining structural reinforcement with waterproofing, the foundation is now better equipped to handle environmental stresses for years to come.

Why Choose Zavza Seal LLC?

At Zavza Seal LLC, we specialize in comprehensive foundation repair and waterproofing services throughout Long Island, Brooklyn, and Queens. Our commitment to excellence and attention to detail ensures that each project is completed to the highest standards.

If you’re experiencing foundation issues or water intrusion, contact us today for a professional consultation.

Phone: 631-980-1800
Website: ZavzaSeal.com