Client Location: Brooklyn, NY
Service Focus: Foundation Crack Repair & Delta Waterproofing Membrane Installation
Project Area: North-West Foundation Wall (Approx. 53 linear feet + 2 feet wraparound toward boiler)
Project Overview
A homeowner in Brooklyn, NY contacted Zavza Seal LLC with concerns about water infiltration and structural cracks in their basement. During the preliminary inspection, our team identified a major vulnerability in the North-West foundation wall, which also wrapped slightly around the South-West corner.
Upon removing interior walls and exposing the foundation, our team discovered numerous cracks compromising both structural integrity and moisture resistance.
Problem Diagnosis
After exposing the foundation, we observed:
- Extensive cracks in the foundation wall, visible in both photos and videos.
- Signs of persistent water penetration, especially above-grade.
- Inadequate waterproofing system in place, which had failed to address water seepage efficiently.
Proposed Solution & Scope of Work
To address the foundation issues effectively and economically, our certified technicians proposed the following scope of work:
Foundation Wall Cleaning
- The entire affected section of the foundation wall was wire brushed and cleaned thoroughly to remove debris, efflorescence, and loose concrete.
- This step was essential for proper adhesion of the new waterproofing membrane.
Enhanced Delta Membrane Application
- Unlike standard installations where the delta waterproofing membrane stops 2 inches above grade, we extended it all the way to the top of the wall.
- This strategic choice provided maximum protection against above-grade water intrusion — a common issue in older Brooklyn homes.
Mechanical Fastening with Steel Anchors
- The membrane was mechanically secured to the foundation wall using high-strength steel anchors.
- Every point of impact was sealed with waterproofing material to prevent any weak spots that could allow moisture penetration.
Why This Method Worked
This approach provided a cost-effective yet highly durable solution for the client. By extending the delta membrane beyond typical industry standards and ensuring secure mechanical fastening, we:
- Eliminated active water seepage
- Prevented future moisture-related damage
- Reinforced the structural resilience of the foundation
- Delivered long-term peace of mind to the property owner
Client Impact
Since project completion, the homeowner has experienced:
- No further signs of water infiltration
- Improved basement air quality and humidity levels
- A stronger, safer, and more valuable property

Conclusion
At Zavza Seal LLC, we understand that foundation wall cracks and water intrusion are more than just structural concerns—they affect the safety, health, and value of your home. This Brooklyn foundation repair project highlights our commitment to precise, tailored solutions using proven waterproofing techniques.
Looking for Foundation Crack Repair or Waterproofing in Brooklyn, NY?
Zavza Seal LLC is your trusted local expert in foundation wall crack repair, delta membrane installation, and basement waterproofing.
📞 Call us today to schedule a free consultation!
🌐 Visit www.zavzaseal.com for more info.
📍 Proudly serving Brooklyn, Queens, and Long Island.