
Spalling Concrete in Parking Garages: Causes and Repair
Why concrete spalls and delaminates in parking garages, the warning signs, and how spalled columns, slabs and walls are repaired to the engineer’s spec.
GSS guide
Concrete repair for parking garages and buildings in Toronto and the GTA.
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In short: a parking garage repair project usually runs in five steps. An engineer assesses the garage, writes a repair spec, the work goes to tender, the contractor repairs one zone at a time, and the engineer signs off each zone. This guide is for condo boards, property managers and building owners planning that work.
A restoration engineer walks the garage, sounds the concrete, looks at cracks, leaks, rust staining and spalling, and sometimes takes samples. The result is a report that says what needs repair now, what can wait, and roughly how big the job is. Many condo boards tie this to their reserve fund planning.
The engineer turns the report into drawings and a spec: where the repair areas are, how deep to go, how to treat the rebar, which materials to use, and where shoring is needed. The spec also lists the items and quantities that contractors price.

The engineer sends the documents to contractors, who price each item on the tender form. Because everyone prices the same items, the board can compare bids line by line rather than on a lump sum.
The garage is split into zones so residents and tenants can keep parking. Each zone is closed, repaired and reopened before the next one starts. The property manager and contractor agree on work hours, closures and notices ahead of time. Typical work includes:

The engineer reviews the repairs as the spec requires, often before concrete is placed and again when a zone is finished. Each zone is cleaned before it reopens. At the end, the engineer confirms the work matches the spec.
The quantities in the spec, how deep the damage goes, the shoring, access for equipment, the number of phases and the hours the garage can be closed. Send the spec or book a site visit and you get a clear, line-by-line price.
We do parking garage repair and concrete restoration for condo corporations, property managers and owners of commercial and industrial buildings across Toronto and the GTA. Our own crews, forms and rebar supply, working to your engineer’s spec.
A restoration engineer hired by the condo corporation or owner. The contractor prices and builds to that spec.
Usually not all of it. The work is split into zones, and one zone closes at a time.
Yes. Send the tender documents and we’ll price every item on the form.
Send it and we’ll reply the same day. Get a free quote or call (416) 785-7838.
Takes 30 seconds. Upload your drawings for a faster price. We reply the same day.
Prefer to talk? Call (416) 785-7838
Keep reading

Why concrete spalls and delaminates in parking garages, the warning signs, and how spalled columns, slabs and walls are repaired to the engineer’s spec.

When a crack in a parking garage or building needs concrete crack injection, epoxy or polyurethane, and what the engineer decides before the repair.

GSS guide Suspended Garage Slab Cost: What Drives the Price Footings, foundation walls and slabs in Toronto and
Send the spec or book a site visit. We reply the same day.