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Concrete Repair Plus
A warehouse loading floor rebuilt with a high-strength polymer-modified repair mortar

Toronto & the GTA · homes and commercial floors

Expansion & Control Joint Repair in Toronto

Failed expansion joints, spalled control joints and open slab joints repaired and resealed across Toronto and the GTA, on driveways, garage floors, patios, pool decks, walkways, warehouse floors and parking structures, so the joint keeps doing its job and water stops getting under the slab.

Book an assessmentCall or text647-574-5236
  • WSIB covered
  • $5M liability
  • Written warranty
  • Condition Report

Joints are planned cracks, and they need maintenance.

Concrete moves. It shrinks as it cures, it expands in summer heat and contracts in a January freeze, and a slab on the ground moves differently from the house or the garage beside it. Joints are how that movement is managed. A control joint is a straight sawcut or tooled groove that tells the slab where to crack, out of sight at the bottom of the groove instead of across the middle of the panel. An expansion joint is a full-depth gap, usually with a compressible filler in it, that lets a slab grow and shrink against a wall, a garage floor or another slab without breaking either. A construction joint is simply where one pour stopped and the next started.

All three only work while they are sealed. An open joint is a slot that collects water, sends it under the slab, washes the base out and lets frost heave the panel on one side. Weeds grow in it, de-icing salt concentrates in it and the edges start to break down under wheels. On an interior floor the failure is mechanical instead: forklift and cart wheels hammer an unsupported joint edge until it spalls into a trench. The repair is different for each, which is why the first job is working out which kind of joint has failed and what it is doing.

A concrete floor joint cut out, rebuilt and cordoned off to cure in an operating facility

Rebuilt edges, the right filler, sealed to move.

Exterior joint resealing

Old sealant and filler cut out, the joint cleaned and dried, a backer rod set to the right depth, and a flexible polyurethane or silicone sealant tooled in that stretches and compresses with the slab for years instead of a season.

Spalled joint edges

Broken joint edges on driveways, decks and floors cut back square to sound concrete and rebuilt in a repair mortar that can take the edge load, then the joint re-established through the repair.

Interior floor joints

Control and construction joints in warehouse, garage and commercial floors cut back and refilled with a semi-rigid filler that supports the edge under hard wheels, which flexible caulk cannot.

Expansion joints at walls and garages

The full-depth joint where a driveway meets the garage slab, a patio meets the house or a walkway meets the steps, cleaned out, re-established with compressible filler and sealed at the top so water stops running down the wall into the base.

Re-cutting and adding joints

Slabs that have cracked randomly because they were poured without enough joints sawcut to give the movement somewhere to go, and existing joints re-cut where they have filled solid.

Structure and deck joints

Joint seals and expansion joint systems in parking structures and on balconies and podium decks renewed as part of the waterproofing, to the engineer’s detail where one exists.

Caulk in a joint is not a joint repair.

The common failure is a joint gunned full of hardware-store caulk, or worse, filled solid with mortar. Caulk poured into a deep joint with no backer rod bonds on three sides and tears the first time the slab moves; mortar in an expansion joint turns a movement joint into a solid line, and the slab finds somewhere else to crack. A proper reseal controls the depth with a backer rod so the sealant bonds only to the two sides and can stretch, uses a sealant rated for the movement and the exposure, and tools it so it sheds water instead of holding it.

Interior floors need the opposite material. A flexible sealant under a forklift wheel squeezes out of the joint and leaves the edge unsupported, which is how a spalled trench forms along a joint in a busy aisle. Those joints get a semi-rigid epoxy or polyurea filler that carries the edge load and still allows the small movement a cured slab makes. Same word, joint, two near-opposite repairs, and using the wrong one is the usual reason the work is being done again.

Which repair for which joint

Exterior, moving

  • Backer rod to control depth
  • Flexible polyurethane or silicone sealant
  • Tooled to shed water

Interior, wheel traffic

  • Edges cut back and rebuilt
  • Semi-rigid epoxy or polyurea filler
  • Filled flush to carry the wheel across

Any joint

  • Clean, dry and primed before anything goes in
  • Spalls repaired first, never bridged
  • Movement and exposure decide the material

How to tell a joint from a crack.

The question comes up on almost every floor and driveway: is that line a joint that has failed or a crack that has opened? If it is straight, runs to the edge of the slab and lines up with others on a grid, it is a control joint and its edges have broken down. If it wanders across the panel, it is a crack. It matters because a joint has to be allowed to keep moving while a crack usually has to be locked together or flexibly sealed depending on whether it is live, so the two repairs are close to opposites. Our crack repair page covers the second case; this page is the first.

Joints, open and closed

A coated garage floor meeting a relaid interlock driveway on a clean line at the garage door
The garage door line: where the slab, the joint and the driveway meet
A concrete walkway with weeds growing through open, unsealed joints and a settled panel
Open joints: weeds above, water going under

More in the before & after gallery →

From the first visit to the final report.

  1. 1of 4

    Identify the joint

    Control, expansion or construction, moving or dormant, exterior or wheel-loaded interior, and whether the edges are sound or spalled.

  2. 2of 4

    Cut out and prepare

    Old sealant, filler, caulk and vegetation removed, spalled edges cut back square and rebuilt, the joint cleaned, dried and primed.

  3. 3of 4

    Fill to suit the movement

    Backer rod and flexible sealant outside; semi-rigid filler flush with the floor inside; compressible filler re-established in expansion joints.

  4. 4of 4

    Record and schedule

    Joints photographed and listed in the Condition Report, with the inspection date for the next cycle, because a sealant is a maintained item.

A fixed price, in writing.

Joint work is priced per visit, in writing, by the length and type of joint and the condition of the edges, because a driveway with sixty feet of open joint and a warehouse aisle with a spalled trench along a construction joint are different jobs on the same length. We do not publish a per-linear-foot rate because the available figures for joint repair are United States industry benchmarks and Canadian work is quoted per project. The closest published GTA figure is for slab and flatwork crack repair, bought the same way per visit, at $500 to $1,200, and it is on the cost page with its sources.

Scarborough, East York, North York and beyond.

Joint repair and resealing for homes across Toronto, Scarborough, East York and North York, and for commercial floors and structures across the GTA.

ScarboroughEast YorkNorth YorkTorontoThe DanforthThe BeachesAll service areas →

Joint repair questions

A control joint is a shallow sawcut or tooled groove that weakens the slab in a straight line so the shrinkage crack forms there, hidden at the bottom of the groove, instead of wandering across the panel. An expansion joint is a full-depth gap with a compressible filler that lets a slab grow and shrink against a wall, a garage floor or another slab without breaking. Both have to be sealed at the top to keep water out, and both are maintained items.

Crack Repair TorontoConcrete Floor Repair in TorontoWarehouse Floor RepairParking Garage RepairDriveway RepairConcrete SealingParking Lot & Loading Dock Repair

Google reviews from our customers.

5.0 on Google

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Daniel Marinelli

3 months ago

I contacted Concrete Repair Plus a few weeks ago to tear-out and repour a concrete porch and steps leading up to the front of my house in North York. I contacted them after having an awful experience with a previous concrete contractor who took my deposit and strung me around for over a month, never to return. The level of care and respect I received from Concrete Repair Plus was incredible. After explaining the situation I was in, they sent me Nick and his crew (Jeremy and Milton) and told me I would be in good hands; they were absolutely right. Nick was so respectful; always taking the time to ensure he messaged me exactly when he was coming and what he'd be doing. He had a vision for how this job would look and made sure to include me in the planning of it come time for the formwork. Watching Nick work with Milton and Jeremy was really something. They paid attention to small details: perfect corners on the steps, a gentle slope to drain water away from the house, the first step that meets the driveway was deep enough to be paved around properly, the really nice full broom finish. The form work was done so meticulously, ensuring that the final product would be perfect. Milton and Jeremy always cleaned up at the end of every day, leaving the site looking better than when they arrived. And they were just such nice guys too. What more could I ask for? It's now been a couple of weeks since the job was finished and it looks fantastic. I couldn't be happier with the result! I'm looking forward to contacting them again for any future projects.

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David

A month ago

Huge shout out to this company. Our concrete porch was showing significant wear and tear and we wanted to take action before a total rebuild would have been required. The team at Concrete Repair Plus was extremely patient, came to the house several times to provide a quote and share Graniflex samples, did fantastic work and (bonus) actually refused payment until every last touch up was complete on our newly finished porch (which looks amazing, BTW). We had spoken to other repair companies but did not love that they used "in-house" epoxy porch repair coatings for which we could not find industry info / reviews. Very happy we chose Concrete Repair Plus to refinish our porch with the Graniflex system, a well-known and very well reviewed product. Thank you!

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Donna L.

3 weeks ago

We had our over 50 year old concrete garage pad removed and replaced by Concrete Repair Plus at our North York, Ontario home. Our old concrete floor had deteriorated and had potholes, and it was too far gone to just resurface. The crew came on time, worked hard all day and completed the job in a timely, thorough and professional manner. They obviously took great pride in their work and showed care and attention to detail. They made sure all our concerns were addressed and resolved. We had them apply an epoxy coating a month later when the concrete had cured, and our garage now looks fantastic! We highly recommend Concrete Repair Plus for reasonable pricing, and for exceptional quality of work.

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Clive A

3 months ago

I recently had Concrete Repair Plus at my residence in Whitby to remove and replace the 66 year old garage floor. It was explained to me that it was not a good idea to grind and epoxy the floor but complete replacement was the way to go. The price was reasonable and the advice was excellent. Staff were on site had the floor removed and repoured the same day. The driveway was covered to prevent concrete spills/splashes. Saw cuts were completed next day. We are now in the process of covering the walls to clean it up. Definitely a five out of five and I would recommend you reach out for a quotation.

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Glen Johnstone

2 months ago

Excellent experience with Concrete Repair Plus! They removed the old concrete jewel stone finish from our porch and applied a Graniflex System, and the results look fantastic. The crew was professional, efficient, and paid great attention to detail. They took great care to remove and reinstall the existing railing, protect the surrounding property, and cleaned everything up when the job was finished. I highly recommend Concrete Repair Plus and will definitely call on them again - Scarborough, ON

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Johnny

3 months ago

I had these guys out to my property in Bowmanville to do a complete garage floor replacement, and boy am I glad I did. They did an excellent job on the entire project and after one little hiccup they went WELL above and beyond to make sure I was satisfied with the final product. My polished concrete floor looks amazing. Never realized how much better polished concrete can look versus epoxy. I wouldn't hesitate to use Concrete Repair Plus if I ever have another concrete project again

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James B

2 months ago

Our experience with Concrete Repair Plus was nothing short of exceptional. The crew was extremely professional, on-time and neat. Finished product was above expectations. Crew was knowledgeable and kept us informed all the way through the process. Equipment used was best-in-class. We would strongly recommend Concrete Repair Plus to anyone thinking about replacing their garage slab or interested in doing concrete repairs. Pricing was competitive. We would use them again.

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Natalie F

2 months ago

Needed to repair a concrete porch and steps in Vaughan for a detached home, they did a fantastic job prepping and repairing then using the graniflex system. from quote to scheduling everything was easy! All the neighbours were coming over to check it out and say it looks fantastic. Definitely elevated and refreshed the homes curb appeal.

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Richard Fawcett

3 months ago

We have owned our home for over 40 years and needed to change the garage floor. Last week Concrete Repair Plus removed the old garage floor and replaced it with a new one. The work was done in 2 days. Their team was professional and courteous, and the price was reasonable. We give them 5 stars. R. Fawcett Mississauga July 2026

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Jodi Leigh

A month ago

We redid our porch and the process was seemless from asking for a quote, to scheduling the work, and then the work itself. The workers were friendly and knowledgeable so made the whole process easy for us. Reasonably priced compared to others we compared to and very happy with the final product. Would use them again!

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Ali Ghalib Al-Bassam

4 weeks ago

Excellent work by the team! They repaired our concrete efficiently, on time, and with great attention to detail. The final result looks fantastic and solid. Highly recommend their services!

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Get the joints sealed before the next freeze gets under the slab.

Free on-site assessment. A written scope and price before anything starts. Every job closes with a Condition Report you keep.

Book an assessment Call or text 647-574-5236

WSIB covered · $5M liability · Written warranty · Scarborough, Toronto, ON