Parking Garage Rehabilitation & Restoration in Toronto

Slab Delamination, Traffic Deck Coatings, and Cathodic Protection

Underground parking garages represent one of the largest structural maintenance items for multi-residential and commercial properties. Because vehicles bring in water, salt, and snow during Toronto's winters, the concrete slab is constantly exposed to chlorides. When these chemicals soak into the slab, they corrode the steel reinforcing structure. The concrete then delaminates, columns crack, and expansion joints fail, letting water leak into lower levels.

Decora Building Restoration provides comprehensive parking garage rehabilitation. Our team has the specialized engineering capabilities required to repair post-tensioned slabs, apply high-durability traffic deck systems, install cathodic protection, and rebuild drainage systems.

Our Garage Restoration Capabilities

• Full & Partial Depth Slab Repair Chipping out delaminated concrete, reinforcing or replacing rusted structural rebar, and casting new high-strength concrete patches.
• Traffic Deck Membranes Application of heavy-duty, slip-resistant polyurethane deck coatings (e.g., Sika or MasterBuilders) that seal the slab against water and chloride penetration.
• Structural Column & Wall Repair Repairing load-bearing columns, shear walls, and foundation cracks via epoxy injection or concrete form-and-pour techniques.
• Expansion Joints & Drainage Upgrades Installing heavy-duty elastomeric gland expansion joints and cleaning or replacing drain lines to prevent water accumulation.

Institutional and Public Infrastructure Experience

Our portfolio includes major parking garage rehabilitation projects for municipal and institutional clients. Notable projects include the heavy structural slab repairs at the **Region of Peel (Sheridan Villa)** and the full multi-level waterproofing and traffic deck installation at the **City of Kitchener (City Hall Garage)**. We operate under rigorous health, safety, and air-filtration guidelines to allow garages to remain partially occupied during construction.

Garage Risk Indicators

• ✓ Water dripping through ceiling expansion joints
• ✓ Powdery white stains (leaching) on concrete ceilings
• ✓ Rust stains on concrete floors or columns
• ✓ Hollow sounding spots on floors when driven over
• ✓ Concrete chunks breaking away from columns or beams

Our Qualifications

Decora is WSIB compliant, fully bonded, and carries comprehensive commercial liability insurance. We work with all leading structural engineering firms in Ontario.

Why is water dripping from my parking garage ceiling?

Water dripping from the ceiling is usually a sign of a failed expansion joint, cracked slab, or broken waterproofing membrane on the level above. This water contains dissolved road salts, which accelerate structural concrete corrosion.

What is a traffic deck coating?

A traffic deck coating is an elastomeric, multi-layered polyurethane membrane applied to concrete floors in garages. It prevents water, vehicle oil, and road salts from soaking into the concrete and corroding the steel rebar.

How does cathodic protection work?

Cathodic protection is an electrochemical system that prevents concrete corrosion. By applying a very low electrical current to the internal steel rebar, we neutralize the chemical process that causes steel to rust.