Town/Neighborhood: East Northport
Borough/County: Suffolk County
Construction Type: Residential
Category: Waterproofing, Structural Repair
Problem
A homeowner in East Northport, NY, reached out to Zavza Seal due to a persistent water intrusion issue at two thru-wall conduits in the foundation wall. The water penetration was causing moisture build-up and threatened the structural integrity of the wall. The client required an effective foundation waterproofing solution to mitigate the risk of extensive damage and maintain the home’s safety and value.
Solution
For this exterior waterproofing challenge, our team at Zavza Seal focused on precision and durability. We targeted the vulnerable wall joints and foundation areas with a methodical, two-part strategy designed to seal out moisture and reinforce structural integrity.
By combining excavation, joint sealing, and membrane waterproofing, we created a resilient barrier against water intrusion. Each material was selected for its proven performance in demanding environments, ensuring the repair would stand up to seasonal shifts and long-term exposure.
Subject Area: Exterior Wall
We began by excavating the grade to expose the thru-wall joint. After cleaning out the joint, we installed 3M 5200 marine sealant tightly packed into the joint, ensuring a watertight seal.
Subject Area: Foundation Wall
To complete the task, we applied a liquid membrane waterproofing to the exposed section of the wall. This product forms a continuous waterproofing barrier with outstanding adhesion, effectively sealing off any potential water intrusion points.
Note: The client was informed about the necessity of regular inspection and maintenance to ensure the long-lasting performance of the sealant and waterproofing membrane.

Conclusion
The water intrusion issue at Laurel Road, East Northport, NY was efficiently and effectively resolved by the Zavza Seal team. Our targeted strategy, using high-quality materials and expert waterproofing techniques, ensured a dry, safe foundation wall for the homeowner. The client expressed satisfaction with our prompt and professional service and peace of mind knowing their home is protected from water damage. Zavza Seal’s expertise in waterproofing and structural repair has once again delivered guaranteed results.
Need help with waterproofing or structural repair in East Northport, NY? Contact Zavza Seal now at (631) 980-1800 or fill out this contact form to schedule your free inspection now!