New stairs between floors, a trench for plumbing, a doorway through a block wall, a patio that’s finally cracked beyond saving. Concrete work turns up on all kinds of projects in Toronto, from condo renovations to commercial fit-outs to backyard clean-ups. The cutting or breaking itself is quick. The planning around it decides whether it goes smoothly.
Find out what’s inside the slab
Concrete in Toronto buildings often holds more than rebar. Electrical conduit and plumbing can run through it, and many condos and parking structures use post-tensioned cables inside their slabs. Cutting a tensioned cable is dangerous and expensive to fix. Before any cut or core, the slab should be scanned, usually with ground-penetrating radar, and the findings marked right on the surface.
Get engineering sign-off
A new opening in a structural slab or bearing wall changes how loads travel. A structural engineer should approve the location and size and specify any reinforcement or framing, and a building permit is commonly needed. In a condo, the corporation will usually want its own engineer to review the plan as well. For slabs on grade, such as a garage floor or patio, the concern is less about structure and more about what’s buried underneath.
Plan for water and slurry
Wet cutting keeps dust down, which matters because concrete contains crystalline silica, one of Ontario’s designated substances. Wet cutting also creates slurry. Indoors, that water has to be contained so it doesn’t run into drains, finished floors or the unit below. Crews use wet vacuums, dams and protection on the floor beneath the cut.
Think about noise and vibration
Concrete saws and breakers are loud, and sound travels through a building’s frame. Under Toronto’s noise bylaw, construction that can be clearly heard is limited to between 7 a.m. and 7 p.m. on weekdays and 9 a.m. and 7 p.m. on Saturdays, and it isn’t allowed at all on Sundays or statutory holidays. Many condo and office buildings set narrower windows. Saw-cutting and coring create far less vibration than chipping hammers, which is why they’re preferred near finishes that have to survive.
Work out how the concrete leaves
Concrete is heavy. A single cut-out section of slab can weigh more than a freight elevator allows, so pieces are sized for the route out of the building. Outdoors, removing a driveway or pad may call for a bin, a skid steer and a plan for the boulevard. Clean concrete is widely recycled into aggregate, so keeping it free of wood and garbage pays off.
Timing matters too. On busy projects in Toronto, concrete work often has to slot in between other trades, so the area should be clear, power available and the water shut-off located before the cutting crew arrives. Confirming those details a day ahead avoids paying a crew to stand and wait.
Cutting versus removal
Concrete cutting creates controlled openings and clean edges. Concrete removal breaks out and clears larger areas such as slabs, pads and walkways. Plenty of jobs use both: saw-cut a clean perimeter, then break out the middle.
Before you book
- Scan results marked on the slab
- An engineer’s approval for any structural opening
- Permit and condo or landlord approval, where needed
- A plan for slurry, dust and noise
- Agreed piece sizes and a disposal route
Talk to SiteClear
We provide concrete cutting and concrete removal for renovation and construction projects across Toronto. Send us photos, drawings and your access details, and we’ll assess the job before giving you a number. Request a free estimate or call 647-693-1416.