Project Location: East Hampton, NY
Project Type: Foundation Wall Crack Repair & Waterproofing
Service: Structural Crack Stitching and Waterproofing
Target Area: Interior foundation wall crack and wall/floor joint
Project Overview
Zavza Seal LLC was contracted to repair a structural crack in a foundation wall for a residential property in East Hampton, NY. This case involved advanced interior techniques to ensure both structural integrity and waterproofing, without the need for exterior excavation. The solution delivered long-term results and is backed by our 40-year warranty.
Client Concerns
The homeowner contacted us after noticing:
- A visible structural crack in the foundation wall
- Water seepage during heavy rains
- Concerns about long-term structural stability
Our team conducted a thorough on-site evaluation and determined that an interior epoxy and carbon fiber-based solution would provide both durability and cost-effectiveness.
Our Solution: Interior Structural Crack Stitching & Waterproofing
We implemented a multi-step repair strategy using cutting-edge tools and materials:
1. Crack Preparation
- Chasing and grinding the crack with a diamond blade to remove debris and open the fissure for proper adhesion.
2. Structural Strengthening
- Cutting deep slots perpendicular to the crack every 18 inches.
- Filling the slots with structural epoxy.
- Installing non-corrosive carbon stitches (each capable of pulling 6,500 pounds) to enhance the foundation’s tensile strength.
3. Epoxy & Urethane Injection
- Drilling injection ports every 6 inches with precision diamond bits.
- Injecting a combination of epoxy and urethane formulations to fully penetrate and seal the crack — both structurally and waterproof.
4. Surface Reinforcement
- Installing 4.5oz reinforced fiberglass mesh, sandwiched between two layers of 7,000 PSI waterproofing cement.
- Applying adhesives and sealants as necessary to strengthen adhesion and sealing.
5. Wall/Floor Joint Treatment
- Grinding the wall/floor joint to expose raw concrete for better bonding.
- Installing a 12-inch wide fiberglass mesh spanning each side of the joint.
- Finishing with two coats of Basecrete waterproofing cement to provide long-lasting water resistance.
Why Interior Foundation Crack Repair?
While some contractors suggest exterior excavation, we provided an advanced interior solution that is:
- More cost-effective
- Less invasive to landscaping and property structure
- Just as reliable – backed by our industry-leading 40-year warranty
Results and Feedback
Post-repair, the homeowner reported:
- No water intrusion during subsequent storms