Problem
A homeowner in Massapequa contacted Zavza Seal after noticing ongoing water problems around their basement foundation. An old basement window had become a weak point where moisture could enter during heavy rain. The property also had foundation cracks and poorly protected window openings that increased the risk of water intrusion.
Our inspection found three issues that needed to be addressed. The unused basement window needed to be permanently sealed, two window openings required proper drainage protection, and a large exterior foundation crack had to be repaired before it allowed more water to enter the basement.
Without repairs, these problems could have led to basement leaks, foundation deterioration, and costly structural damage over time.
Our Solution
Our team developed a complete waterproofing solution that addressed every source of water intrusion instead of treating only the visible symptoms.
1. Permanent Window Closure
We removed the existing basement window and permanently closed the opening using concrete masonry blocks. The new block wall was securely tied into the existing foundation to create a strong, seamless repair.
To help keep water away from the foundation, we pitched the repaired surface so rainwater would drain away instead of collecting against the wall. We then waterproofed and sealed the entire area to create a long-lasting moisture barrier.
2. Installation of Two Window Wells
To better protect the remaining basement windows, we excavated around each opening and installed two galvanized steel window wells.
Each window well included a self-contained drainage system using clean gravel and drainage stone. This allows rainwater to drain safely below grade instead of collecting around the windows.
The window wells were securely fastened to the foundation wall and professionally sealed to help prevent future leaks.
3. Exterior Structural Crack Repair
Our crew excavated alongside the foundation to expose a structural crack measuring approximately 6 feet 5 inches deep.
After cleaning and preparing the damaged area, we repaired the crack using high-strength 6,500 PSI repair mortar.
To strengthen the repair and improve waterproofing performance, we installed reinforced fiberglass mesh between two coats of waterproofing cement. Finally, we applied a heavy layer of liquid rubber waterproofing membrane over the repaired section before backfilling and compacting the soil.
This multi-layer repair helps keep groundwater from entering through the foundation while reinforcing the repaired wall.
Why This Repair Was Important?
Water always follows the path of least resistance. An unused basement window, aging foundation cracks, and poor drainage around window openings can all become entry points for moisture. If these problems are ignored, water can damage finished basements, weaken foundation walls, encourage mold growth, and increase repair costs over time.
By permanently closing the unused window, installing properly drained window wells, and repairing the structural foundation crack with multiple waterproofing layers, our team eliminated several common sources of basement water intrusion. The homeowner now has a stronger, better-protected foundation that is prepared to handle heavy rain and changing weather conditions.
The Result
After the project was completed, the home had a fully sealed foundation where water had previously been able to enter. The unused basement window was permanently closed, the remaining basement windows were protected with properly drained window wells, and the exterior foundation crack was structurally repaired and waterproofed.
The homeowner now has improved drainage around the foundation and greater confidence that the basement will remain dry during heavy rainfall.
Need Foundation Waterproofing in Massapequa, NY?
If your basement has leaking windows, foundation cracks, or water entering after storms, Zavza Seal can help. We provide professional foundation waterproofing, structural crack repair, window well installation, and drainage solutions throughout Massapequa and across Long Island.