Town/Neighborhood: Jamaica
Borough/County: Queens County
Construction Type: Residential
Category: Foundation Waterproofing, Crack Repair, Ceiling Repair

Problem

A homeowner in Jamaica, NY contacted Zavza Seal LLC to address constant water intrusion at the back of the house, under the deck, and along the foundation wall. Water seepage had caused a lot of damage to the foundation, and cracks were visible in several areas. The issue involved both structural and waterproofing concerns.

The homeowner also reported a damaged ceiling section of approximately 8 square feet, where leaks were suspected. Left untreated, these problems could lead to further structural deterioration, indoor water damage, and potential mold growth.

Diagnosis

Our team performed a detailed inspection of the affected areas and identified two critical issues:

1. Foundation Wall (Approx. 12 Linear Feet Under Deck):
   • Water intrusion was occurring at the footing and along cracks in the wall.
   • The concrete was showing signs of damage and required repair before waterproofing could be effective.
2. Ceiling Area (Approx. 8 sq. ft.):
   • Leaks had damaged the sheetrock, and further inspection was needed to determine the source.

Solution

To repair the foundation issues and make sure they dont come back, Zavza Seal LLC carried out a multi-phase solution:

Foundation Wall Waterproofing and Repair

• Cut a 40” x 12’ section of concrete to allow excavation access and disposed of debris properly offsite.
• Disassembled the deck planks near the foundation wall and set them aside for reassembly later.
• Excavated the exterior grade down to the bottom of the foundation footing.
• Steel-brushed the exposed foundation wall and footing to prepare for repair.
• Repaired all defective areas of the foundation with high-strength mortar and installed 4.5 oz reinforced mesh sandwiched between two layers of 6,000 PSI waterproofing cement.
• Chased all cracks with diamond blades to remove loose material, followed by additional mesh reinforcement and waterproofing cement layers for long-term durability.
• Installed a pressure relief system along the footing to manage hydrostatic pressure.
• Applied a liquid membrane over the entire wall surface, with special attention to the footing joint.
• Covered the liquid membrane with a self-adhered vapor barrier to redirect water below the footing.
• Backfilled and tamped the soil after waterproofing.
• Reinstalled the deck planks to their original state.
• Poured a new 4” concrete slab at the same elevation to restore the area.

Ceiling Repair

• Cut the damaged ceiling section to expose the floor joists of the first floor above.
• Investigated the source of the leaks and discussed repair options with the homeowner (cost to be determined).
• Installed a new piece of sheetrock to complete the ceiling repair (sanding and painting excluded).

Outcome

The homeowner in Jamaica, NY was very satisfied with the results. The foundation wall was structurally reinforced, fully waterproofed, and protected against future water penetration. The installation of a pressure relief system and layered membranes ensured long-term durability.

The ceiling repair allowed the homeowner to identify the leak source and prevent further water damage indoors. By combining structural repair with waterproofing expertise, Zavza Seal LLC delivered a reliable, cost-effective solution that safeguarded both the foundation and the living space.

Why Choose Zavza Seal LLC

Zavza Seal LLC specializes in foundation waterproofing, crack repair, and structural restoration across Queens, Brooklyn, Long Island, and Manhattan. With proven expertise and a commitment to lasting results, our team helps homeowners resolve water intrusion issues with effective, modern solutions.