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Case Study: Chimney Stabilization and Waterproofing in North Bellmore, NY
The chimney of the property in North Bellmore, NY in need of waterproofing and stabilization that was successfully repaired by the zavza seal team.

Project Type: Chimney Repair and Foundation Stabilization
Location: North Bellmore, NY
Service Provider: Zavza Seal LLC
Client Concern: Leaning Chimney and Water Infiltration


Overview of the Issue

A homeowner in North Bellmore, NY, contacted Zavza Seal LLC after noticing their chimney was beginning to lean outward. The visible tilt raised concerns about the structural stability of the chimney and the safety of the surrounding structure. In addition, the mortar joints had visible cracks and signs of deterioration, and the sealants were worn out, which allowed water to seep in during rainfall.


Inspection and Findings

Upon inspection, the Zavza Seal team identified multiple contributing factors:

  • Foundation settlement had compromised the base support of the chimney.
  • Old, ineffective sealants were allowing water penetration.
  • The mortar joints were crumbling and no longer holding their structural integrity.

Immediate corrective action was necessary to stabilize the structure and prevent long-term damage.


Work Performed

To address the structural and waterproofing concerns, Zavza Seal LLC executed a comprehensive repair plan, including the following steps:

1. Sealant Removal and Application

  • All deteriorated sealants were removed from the chimney joints.
  • Backer rods, structural epoxy, and waterproofing joint sealants were professionally installed to restore a watertight barrier.

2. Grinding and Repointing

  • The entire chimney was ground to a depth of ½ inch to remove compromised mortar.
  • Repointing was performed using light beige mortar, carefully selected to match the existing color and maintain aesthetic consistency.

3. Cement Crown Installation

  • A new cement crown was constructed and installed to direct water away from the top of the chimney and reduce exposure to weather damage.

4. Full Surface Waterproofing

  • The entire chimney exterior was treated with a high-grade waterproof sealant to prevent water intrusion and extend the lifespan of the structure.

5. Foundation Reinforcement with Helical Piles

  • Excavation work was performed around the chimney base to prepare for structural support installation.
  • Two new helical piles with steel brackets were installed to reach a minimum ultimate load-bearing capacity of 20 tons.
  • After pile installation, the excavation area was backfilled to its original grade.

This system provides deep anchoring to resist further foundation movement and permanently stabilizes the chimney.


Project Outcome

  • Chimney structurally stabilized and visually restored.
  • Waterproofing fully secured against future water damage.
  • Foundation reinforced to prevent further shifting or leaning.
  • Improved property safety and aesthetics.

Why This Matters for Homeowners in North Bellmore

Homes in North Bellmore, NY, are subject to soil movement, seasonal freeze-thaw cycles, and coastal moisture conditions. These environmental factors make it especially important to ensure chimneys and foundations are properly supported and protected. Ignoring signs of a leaning chimney can lead to extensive property damage and costly repairs.


Services Rendered:

  • Chimney repointing
  • Structural sealant installation
  • Cement crown installation
  • Foundation stabilization with helical piles
  • Full-surface waterproofing

Contact Zavza Seal LLC

If you’re experiencing a leaning chimney, foundation cracks, or water infiltration in your chimney structure, contact Zavza Seal LLC today. Our team offers professional, lasting solutions for property owners across Long Island, including North Bellmore.

Get a free inspection and expert advice from Zavza Seal.
Visit: www.zavzaseal.com
Phone: (631) 980-1800

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