Concrete damage in a parking garage does not always stop at the slab surface. In metal deck construction, corrosion can spread beneath the concrete and weaken the assembly supporting it.
At that point, patching visible damage is not enough. The affected area may require a complete parking garage metal deck replacement.
T.G. Basile is performing this work at a Stop & Shop facility in Forest Hills, Queens. The project shows what it takes to remove a corroded deck and rebuild it for structural integrity, safety, and long-term performance.
Why Metal Deck Corrosion Requires a Deeper Repair
Metal decking supports the reinforced concrete slab above it. When water reaches the deck, corrosion can gradually reduce the metal’s thickness and compromise its ability to perform.
Visible warning signs may include:
- Cracking or spalling concrete
- Rust staining
- Water infiltration
- Deterioration along joints
- Exposed or weakened metal decking
The visible damage may represent only part of the problem. A complete investigation is needed to determine how much of the deck is affected and whether localized repairs are sufficient.
When corrosion is widespread, full replacement provides a more reliable solution than repeatedly patching isolated areas.
How a Parking Garage Metal Deck Replacement Works
The Forest Hills project is being completed in phases of approximately 8,500 square feet.
The process begins by marking and saw-cutting the existing deck. Crews then perform full-depth demolition to remove the concrete and corroded metal decking.
Once the area is cleared, new treated metal decking is installed across the structural beams. Wire mesh and rebar are then positioned to reinforce the new concrete slab.
Because the work is taking place on the second level, concrete is delivered through nearly 200 feet of boom line. Each phase requires approximately 130 to 140 yards of concrete.
Site Superintendent Peter Decker explains the demolition, reinforcement, pumping, and placement process in this parking garage restoration project walkthrough:
The Repair Must Address More Than the Deck
Replacing the damaged deck restores the structural assembly, but it is also important to address how moisture reached the metal.
That may require repairs involving:
- Expansion joints
- Cracks and penetrations
- Drainage systems
- Waterproofing
- Sealants
- Traffic coatings
Without this additional protection, the rebuilt deck may remain exposed to the same conditions that caused the original deterioration.
A complete restoration plan should correct the structural damage and reduce the risk of repeated water infiltration.
Experience Matters During Structural Deck Replacement
Parking garage metal deck replacement combines controlled demolition, structural coordination, reinforcement, concrete placement, and occupied-facility planning.
Every phase must be sequenced correctly. The new decking must align with the structural framing. Reinforcement must remain properly positioned during placement. Concrete delivery must be coordinated to keep the pour moving efficiently.
T.G. Basile brings more than 50 years of experience to parking garage restoration, structural concrete, masonry, waterproofing, and protective coating work.
When deterioration extends below the surface, our team provides the experience required to move from identified damage to a complete, executable repair.
Contact T.G. Basile to discuss a parking garage metal deck replacement or restoration project.