Overview
Our team recently completed a foundation wall waterproofing and drainage project for a homeowner in Dix Hills, NY. The client experienced ongoing water intrusion at the area of the foundation wall where a staircase had previously been removed. This case study outlines how we diagnosed the issue and implemented a long-term solution to protect the home from future water damage and structural problems.
The Problem: Foundation Wall Water Intrusion
The homeowner noticed water seeping through the foundation wall in the basement, particularly in the area where an old staircase once stood. After an inspection, we determined that:
✅ Water intrusion was occurring through weak points and cracks in the foundation wall
✅ Hydrostatic pressure was building due to insufficient exterior drainage
✅ The newly installed staircase nearby required care to avoid structural damage during excavation
Without proper repairs and waterproofing, the foundation would continue to deteriorate and allow water infiltration, increasing the risk of structural compromise and mold growth.
The Solution: Foundation Wall Repair, Waterproofing, and Pressure Relief System
We proposed a detailed repair and waterproofing plan that would resolve the water intrusion while preserving the stability of the new staircase.
1. Careful Excavation
We marked a 7 linear feet by 3 feet wide area for excavation, starting 18 inches away from the new staircase. This ensured that no shoring was needed and that the staircase remained stable. We excavated down to the bottom of the foundation footing to fully expose the affected wall.
2. Surface Preparation and Crack Repair
After exposing the foundation wall and footing, we used steel brushes to clean the surface thoroughly. We repaired all cracks and weak points in the wall by embedding a 4.5-ounce reinforced fibermesh between two layers of 7,050 psi Basecrete waterproofing cement, ensuring structural integrity and a watertight seal.
3. Pressure Relief Drainage Installation
At the base of the foundation footing, we installed a 4-inch heavy duty perforated PVC pressure relief pipe, wrapped in filter fabric and surrounded by gravel. This pipe directed water away from the foundation wall to a gravel sump, effectively reducing hydrostatic pressure that can cause cracks and leaks.
4. Application of Waterproofing Membranes
We applied a liquid waterproofing membrane over the entire exposed foundation wall, paying special attention to the joint between the wall and footing. On top of the liquid membrane, we installed a Delta brand high performance dimpled waterproofing membrane, which directs water down to the pressure relief system and shields the wall from direct pressure.
5. Backfill and Site Restoration
Once the waterproofing and drainage work was completed, we backfilled the area to the original grade, ensuring the soil was properly sloped away from the foundation. The soil was tamped to restore stability and prevent settling.
Results: A Dry and Stable Foundation
At the end of the project, the homeowner in Dix Hills, NY gained:
✨ A fully waterproofed and structurally reinforced foundation wall
✨ An effective drainage system that relieves hydrostatic pressure
✨ Protection against future water intrusion and cracks
✨ Peace of mind knowing the foundation is secure and the basement remains dry
Our expertise in foundation waterproofing Dix Hills NY, foundation wall crack repair, and exterior drainage system installation ensured a durable and reliable outcome.
Why Choose Us for Foundation Waterproofing in Dix Hills, NY?
We specialize in solving foundation and basement water problems with proven methods including:
- Foundation wall crack repair with high strength materials
- Exterior waterproofing membranes and coatings
- Pressure relief drainage system installation
- Careful excavation and site restoration
If you are facing water intrusion or cracks in your foundation, we provide long-lasting solutions tailored to your home’s needs.
Contact Us Today
For professional foundation waterproofing services in Dix Hills, NY, contact our team today to schedule an inspection. We are committed to protecting your home from water damage and maintaining its structural integrity.
Contact us for more information at (631) 980-1800