Project Location: Brooklyn, NY
Service Category: Targeted Basement Waterproofing
Client Issue: Water seepage through cavity between customer’s waterproofing system and adjacent property wall
Project Overview
A Brooklyn homeowner contacted Zavza Seal LLC after noticing water entering their basement from an unusual source—through a cavity between their waterproofing channel and a neighboring structure’s wall. This situation posed a unique waterproofing challenge: the water wasn’t leaking from their own property, but from the adjacent building.
Our investigation revealed that runoff water from the neighbor’s side was falling into a shared cavity and being redirected—due to hidden obstructions—toward our client’s basement wall. This led to moisture buildup behind the existing waterproofing system, reducing its effectiveness and threatening interior water damage.
Scope of Work
To protect our client’s basement and ensure full control over this redirected water flow, Zavza Seal LLC designed a custom waterproofing strategy targeting the problematic cavity and its connection to the adjacent wall.
Here’s how we resolved the issue:
1. Anchor Installation for Waterproof Support
- We drove long threaded anchors at a 30° upward angle from our client’s waterproofing channel directly into the neighboring wall.
- This provided mechanical stability for the upcoming waterproof barrier and created a reinforced foundation for sealing materials.
2. Waterproof Strip Application
- We installed solid waterproofing strips across the entire cavity, securing them from the anchor points on the neighbor’s wall down to the existing waterproofing channel.
- This effectively bridged the gap and redirected all incoming water directly into the waterproofing system without touching the client’s basement wall.
3. Epoxy and Urethane Injection
- Our team conducted targeted epoxy and urethane injections to fill all visible and hidden gaps along the water path.
- These injection materials formed watertight seals that bonded firmly with surrounding surfaces, eliminating leak pathways and water traps.
4. Surface Waterproofing Paste Application
- To complete the seal, we applied a thick layer of waterproofing paste over the entire strip surface and surrounding area.
- This final coating ensures the entire cavity is impermeable, guiding water securely into the collection channel and preventing cross-wall seepage.
Results & Outcome
- Water intrusion from the neighbor’s side completely eliminated.
- Existing waterproofing channel preserved and enhanced, with no need for costly structural alterations.
- Peace of mind restored for the homeowner, who can now trust that their basement is fully protected—even from external building runoff.
Client Benefits
- Custom-engineered solution for a non-standard water entry point.
- No conflict with neighboring property—all work remained on the client’s side.
- Cost-effective fix that extended the life and performance of the existing waterproofing system.
Project Snapshot
- Location: Brooklyn, NY
- Problem: External water runoff redirected into basement via shared cavity
- Solution: Anchor-mounted waterproofing strip, epoxy/urethane injection, cavity sealing
- Result: Fully contained water flow with long-term protection
- Completion Timeline: 1–2 working days
Why Choose Zavza Seal LLC for Basement Waterproofing in Brooklyn?
At Zavza Seal LLC, we specialize in custom waterproofing solutions for complex water intrusion problems—especially those involving shared property lines or unexpected leak sources.
Our team of licensed waterproofing professionals uses cutting-edge materials and precision techniques to diagnose and resolve water issues at the root.
Whether it’s foundation cracks, subgrade water pressure, or cross-property leaks, we’ve got your basement protected.
Get a Waterproofing Assessment Today
If you’re experiencing mysterious water intrusion in your basement, don’t wait for the damage to worsen. Contact Zavza Seal LLC, your trusted Brooklyn waterproofing contractor, for a free consultation.
Call us now at (631) 980-1800 or visit www.zavzaseal.com to schedule your inspection.