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Case Study: Basement Waterproofing, Mold Remediation, and Structural Repairs in Huntington, NY
Completed basement waterproofing and structural repair project in Huntington NY showing restored basement walls, mold remediation, garage dry well drainage system, and new steel support column installation.

A homeowner in Huntington, NY contacted Zavza Seal because they were dealing with multiple serious problems inside their home and garage. The issues included water intrusion, mold growth, wall damage, and a weakened support column.

The property needed a complete and long-term solution, not just small repairs.

The Problem

The homeowner was facing several connected issues:

Because of these issues, the home had poor indoor air quality, visible damage, and concerns about structural safety. The moisture problems were also causing repeated damage to finished walls and flooring.

Our Inspection

After a full site inspection, our team identified three main root causes:

  1. Water intrusion through foundation walls
  2. Lack of proper waterproofing protection
  3. Structural weakness in the garage support system and poor drainage control

We designed a full repair plan that would address waterproofing, structural stability, mold removal, and drainage in one complete solution.

The Solution

Zavza Seal completed a full restoration and waterproofing project in multiple areas of the home.

1. Basement Wall Waterproofing and Reconstruction

We removed damaged drywall and cleaned the foundation walls. Then we applied a high strength 6000 PSI waterproofing cement layer to seal the walls and prevent future water intrusion.

After waterproofing, we rebuilt the walls using:

  • Pressure treated bottom and top plates
  • New 2×4 framing studs
  • R13 fiberglass insulation
  • New mold resistant drywall
  • Tape, compound, sanding, and painting

This restored the basement walls and protected them from future moisture damage.

2. Garage Dry Well Installation

To solve water accumulation in the garage floor, we installed a custom dry well system.

Work included:

  • Cutting a 14 inch by 14 inch opening in the garage floor
  • Excavating a 2 foot deep drainage pit
  • Installing gravel base for water filtration
  • Installing a storm water pit drain with steel grate

This system helps collect and redirect water underground, reducing flooding and moisture buildup in the garage.

3. Structural Column Replacement

We removed a damaged support column that was no longer providing proper structural strength.

Then we installed:

  • A 4 inch concrete filled steel support column
  • Steel plates at top and bottom for strong anchoring
  • Concrete patch repair to restore the garage floor surface

This ensured long term structural stability for the home.

4. Mold Remediation and Laundry Room Repairs

We completed full mold remediation and interior restoration in the laundry room:

  • Removed contaminated drywall and materials
  • Applied mold killing and prevention treatment
  • Installed RadonSeal vapor barrier on foundation walls
  • Replaced with mold resistant sheetrock
  • Repaired soffit, drywall, and trim areas
  • Installed new flooring with moisture resistant underlayment
  • Reinstalled baseboards and finishing details

Optional sanding and painting was also completed to fully restore the space.

The Results

After the work was completed, the homeowner saw a major improvement throughout the property.

The basement walls were dry, clean, and fully rebuilt. Mold issues were removed and treated to prevent return. The garage became more stable with a new structural column and better water control from the dry well system. Interior spaces also looked and felt new again after full restoration.

The home now has improved safety, better air quality, and long term protection against water damage.

Why This Project Matters?

This project shows how water problems can affect many parts of a home at once, including structure, air quality, and interior finishes. By fixing the root cause and not just the symptoms, the home is now protected for the long term.

Zavza Seal focuses on permanent solutions that combine waterproofing, drainage, and structural repair in one complete system.

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