Trailer Welding Repair in Toronto & the GTA
CanaWelding provides mobile trailer welding repair across the Greater Toronto Area. A CWB-certified welder comes to your yard, driveway, or job site to repair cracked frames, cross-members, hitches, and boat trailers on the spot. Most repairs cost $200 to $500, frame and hitch work $400 to $1,200, quoted in writing first.
What Is Trailer Welding Repair?
Trailer welding repair is the process of restoring cracked, broken, or corroded welds on a trailer's frame, cross-members, hitch, and mounts so the trailer can safely carry its rated load again.
Trailers take a beating most steel structures never see. Every pothole, hard stop, and overloaded trip sends a shock through the frame, and Ontario road salt works into every joint each winter. Over time, that shows up as fatigue cracks at the weld toe, rusted-through cross-members, and hitch plates that start to move.
Most welders run a bead over the crack. CanaWelding finds out why it cracked first. A weld laid over a fatigue crack without removing it, or without fixing the overload that caused it, fails again, usually in the same place and usually on the highway. Our welders come from CanaStruct's structural framing work, so they assess the load path through the frame before deciding how to repair it.
We do trailer repair welding on:
- Utility, landscape, and contractor trailers
- Flatbeds, car haulers, and equipment trailers
- Dump trailers and enclosed cargo trailers
- Boat trailers, steel and aluminum
- Commercial and fleet trailers, including semi-trailers
How Much Does It Cost to Weld a Trailer?
In the GTA, most trailer welding repairs cost $200 to $500 for a crack or single-joint repair, and $400 to $1,200 for frame rail, cross-member, or hitch work. Commercial and semi-trailer structural repairs are quoted per project after an assessment. Every quote is written and includes travel within the GTA.
| Repair | Typical Cost (CAD) | What It Usually Involves |
|---|---|---|
| Crack or single-joint repair | $200 to $500 | Grinding out a crack and rewelding one joint, on-site |
| Frame rail repair | $400 to $1,200 | Removing the cracked section, rewelding, adding a fish plate where needed |
| Cross-member replacement | $400 to $1,200 | Cutting out rusted members and welding in new steel matched to the original size |
| Hitch, coupler, or tongue repair | $400 to $1,200 | Rebuilding hitch plates, receiver tubes, coupler housings, safety chain anchors |
| Commercial and semi-trailer structural work | Quoted per project | Assessment, repair plan, and inspection documentation |
What Is the Typical Cost of Mobile Welding?
Mobile welding in the GTA is usually billed one of two ways: an hourly rate of about $120 to $180 per hour, or a flat quote for a defined job. For trailer repairs, we quote a flat price after seeing the damage. Once setup time and job length are counted, a flat quote usually comes out lower than an open hourly rate, and you know the number before work starts.
Included in every quote: travel within the GTA, labour, consumables, and joint prep, itemized in writing. What we quote is what you pay.
What Changes the Price
Material: aluminum costs more to repair than steel. It needs TIG welding, the right filler alloy, and careful heat control.
Rust and section loss: a clean crack is quick. A frame thinned by years of road salt may need new steel welded in.
Access: a crack under a loaded deck or next to the axle takes longer to reach and prep.
Number of joints: one cracked bracket is a short visit. A frame with cracks at several cross-members is a bigger job.
Urgency: same-day calls depend on availability. Booked repairs are scheduled within a few business days.
Trailer Welding Repairs We Do On-Site
Trailer Frame Repair Welding
Cracked frame rails, broken webs, and failed gussets are the most common trailer welding repair we see. The crack is ground out completely to clean metal, the joint is prepared, and it is rewelded in multiple passes to restore the full section. Where the frame cracked from overload or fatigue, we add a fish plate or gusset so it doesn't crack again in the same spot.
Cross-Members, Axle Mounts, and Spring Hangers
Cross-members rust from the inside out and tend to fail first on older trailers. We cut out damaged members and weld in new steel matched to the original section size and spacing. Cracked spring hangers and axle mount welds are repaired with the trailer properly supported, since these carry the full load.
Hitches, Couplers, and Tongues
Hitch plates, receiver tubes, coupler housings, safety chain anchors, and tongue welds are the most safety-critical welds on a trailer. If they fail, the trailer separates from the tow vehicle. We repair or rebuild them to full strength and can document the work for fleet inspection.
Ramps, Decks, and Dump Bodies
Cracked ramp hinges, torn ramp brackets, broken deck supports, and dump trailer hoist mounts and tailgate hinges are all repaired on-site, with the trailer supported safely before any welding starts.
Commercial and Fleet Trailers
For fleets, we repair multiple units in one visit at your yard. Repairs on commercial trailers that go through MTO safety inspections are welded to approved procedures, and weld documentation is available for your inspection records.
Boat Trailer Welding Repair
Boat trailers fail differently from utility trailers. They are dunked at the launch, stored wet, and hauled on salted winter roads, so corrosion and thin-wall material cause most of the damage we see.
Common boat trailer welding repairs:
- Cracked frame rails and cross-members
- Broken or rusted bunk brackets and roller mounts
- Winch stand and winch post repairs
- Tongue and coupler welds
- Fender and step brackets
Galvanized Steel Trailers
The zinc coating has to be ground off before welding, since welding through it produces a weak, porous weld and toxic fumes. After the repair, the area is coated with a zinc-rich cold galvanizing compound so it doesn't become the next rust point.
Aluminum Trailers
Aluminum is TIG welded with ER4043 or ER5356 filler matched to the trailer's alloy. Aluminum trailer sections are often thin, so heat control matters. Too much heat and the weld burns through or distorts the frame.
Looking for boat trailer welding repair near you in the GTA? We come to your driveway, storage yard, or marina parking lot, so the boat doesn't need to come off the trailer for most repairs.
What Kind of Welder Do You Need to Weld a Trailer?
For a steel trailer frame, a MIG welder (GMAW) running ER70S-6 wire is the standard choice, and most frame steel is thick enough to need a 220-volt machine. Stick welding works better outdoors in wind. Aluminum trailers need a TIG welder.
| Trailer Material | Best Process | Filler | Why |
|---|---|---|---|
| Mild steel frame | MIG (GMAW) | ER70S-6 wire | Fast, strong, clean welds on frame rails and cross-members |
| Steel, outdoors or rusty | Stick (SMAW) or flux-core | E7018 or E6011 rod, flux-core wire | No shielding gas to blow away in wind |
| High-strength steel parts | Stick with low-hydrogen rod | E7018 | Reduces the risk of hydrogen cracking; preheat may be needed |
| Aluminum (boat trailers) | TIG (GTAW) | ER4043 or ER5356 | Controlled heat on thin aluminum; filler matched to the alloy |
| Galvanized steel | MIG or stick, coating removed first | ER70S-6 or E7018 | Zinc must be ground off, then the repair recoated |
A note for DIY repairs: small 120-volt flux-core welders are fine for brackets and fenders. On a frame rail 3/16 inch or thicker, they often can't get full penetration, and a weld that looks good on the surface can still let go under load. For frames, hitches, and couplers, a certified repair is the safer call.
Repair or Replace Your Trailer?
Most cracked trailers are worth repairing. A frame repair usually costs a few hundred dollars, while a new trailer often costs thousands, and the repair is usually done the same day.
Replacement makes more sense when:
- Road salt has thinned the main frame rails, not just one joint
- The same spot has cracked repeatedly because the trailer is undersized for its loads
- The repair cost is getting close to the price of a comparable trailer
- A commercial trailer would need so much structural work that a new unit is the better investment
If a trailer isn't worth saving, we tell you before we start, not after we have billed for the attempt.
On-Site Trailer Repair vs. Taking It to a Shop
| On-Site with CanaWelding | Welding Shop | |
|---|---|---|
| Getting the trailer there | We come to you | Tow or haul it, often with a broken hitch or frame |
| Turnaround | Usually same visit | Wait in the shop queue, often days |
| Total cost | Repair only, travel included | Repair plus towing or hauling |
| Best for | Frames, cross-members, hitches, mounts, boat trailers | Full rebuilds, complex custom fabrication, small precision parts |
For most trailer welding repairs, on-site is faster and cheaper overall. For a full custom rebuild, a shop can be the better fit, and we'll say so.
How Our Trailer Welding Repair Works
Assess, quote, weld, usually in one visit.
Send photos.
Call or email with the trailer type, what failed, and your location. Photos help us bring the right material and filler.
On-site assessment.
We inspect the damage and find the cause, not just the crack.
Written quote.
Labour, materials, and travel in writing before any grinding starts.
Repair plan.
Process, filler, preheat, and weld sequence are set to limit distortion.
Weld.
Cracks are removed to clean metal and the joint is rewelded to CWB procedures under CSA W47.1.
Inspect.
Every weld is checked for size, profile, and defects before we leave.
Back in service.
Coated where needed, cleaned up, and documented for fleet or inspection records on request.
One visit. One team. No tow truck.
Who Stands Behind the Repair
CanaWelding is the welding division of CanaStruct Inc., an HCRA-licensed structural framing contractor in Ontario. Co-Owner Zura Mirzikashvili has worked on GTA framing and structural sites since 2011. He built CanaWelding so every repair is assessed by people who understand how loads travel through steel, not just how a bead looks.
Every welder we send is CWB-certified under CSA W47.1, covered by WSIB, and backed by full commercial liability insurance. It is not a self-declared standard. It is a regulated one.
Read more about Zura Mirzikashvili →Mobile Trailer Welding Repair Near You
We dispatch to yards, driveways, job sites, and marinas across the GTA. Same-day dispatch is available for most calls in Toronto, Mississauga, Brampton, Vaughan, and Markham.
- Toronto
- Etobicoke
- Scarborough
- North York
- Mississauga
- Brampton
- Oakville
- Burlington
- Vaughan
- Richmond Hill
- Newmarket
- Markham
- Ajax
- Pickering
- Oshawa
Related Repair Services
Trailer Welding Repair FAQ
How much does it cost to weld a trailer?
Most trailer welding repairs in the GTA cost $200 to $500 for a crack or single-joint repair. Frame rail, cross-member, and hitch repairs usually run $400 to $1,200. Commercial and semi-trailer work is quoted per project. Every quote is written and includes travel within the GTA.
What is the typical cost of mobile welding?
Mobile welding in the GTA typically costs $120 to $180 per hour, or a flat quote for a defined job. For trailer repairs, we quote a flat price after seeing the damage, which usually comes out lower than an hourly rate once setup and job length are counted.
What kind of welder do I need to weld a trailer?
A MIG welder running ER70S-6 wire is the standard choice for a steel trailer frame, and most frame steel needs a 220-volt machine. Stick welding with E7018 rod works better outdoors in wind. Aluminum boat trailers need a TIG welder with ER4043 or ER5356 filler.
Can a cracked trailer frame be welded?
Yes. The crack is ground out completely to clean metal and rewelded in multiple passes, with a fish plate or gusset added where the frame cracked from fatigue or overload. Running a bead over the crack without removing it is not a real repair.
Do you do boat trailer welding repair near me?
Yes. We repair steel, galvanized, and aluminum boat trailers at your driveway, storage yard, or marina parking lot across the GTA, including bunk brackets, rollers, winch stands, frames, and tongues. Most repairs don't require taking the boat off the trailer.
Can you weld an aluminum trailer?
Yes. Aluminum trailers are TIG welded with ER4043 or ER5356 filler matched to the alloy, with careful heat control to avoid burn-through on thin sections.
Do I need to tow my trailer to a shop for welding repair?
No. We come to your yard, driveway, or job site with the equipment to assess, quote, and weld in one visit, so a trailer with a broken hitch or frame doesn't have to be hauled anywhere.
Can you provide documentation for a commercial trailer inspection?
Yes. Repairs on commercial trailers are welded to approved procedures under our CWB certification, and weld documentation is available for MTO safety inspection and fleet maintenance records.
Get a Free Trailer Welding Repair Quote
Send us a photo of the damage and where the trailer is. We'll reply with a written quote, and most repairs are done in one visit.