RUST REPAIR & WELDING.
Corrosion Metallurgy & Metal Fabrication

RUST REPAIR & WELDING.
PERMANENT CORROSION ELIMINATION.

Quebec road salt destroys sheet metal from the inside out. We don't hide rust under cheap filler—we cut out cancer metal, fabricate new steel sections, and weld with MIG/TIG precision.

Permanent Rust Eradication

EXCISION VS SURFACE COVER-UPS

Rust is an electrochemical oxidation reaction. Simply sanding surface bubbles and slapping fiberglass or body filler over perforated metal will fail within months as trapped moisture rots the steel from behind.

100% Rust Excision

We plasma-cut past all oxidized metal into pristine, non-contaminated steel structure.

Custom Metal Fabrication

Hand-rolling and press-braking heavy 18-gauge cold-rolled steel to mirror original body contours and wheel arch curves.

Full-Penetration MIG/TIG Welding

Solid continuous seam welding ground smooth for factory structural strength and appearance.

EXCISION VS SURFACE COVER-UPS

Surgically excising perforated rocker panel section down to sound virgin steel.

Anti-Corrosion Shielding

INTERNAL CAVITY WAX & ZINC PRIMERS

Welding burns off factory internal galvanized coatings. Without treating inner hidden cavities, heat-affected welding zones will rust quickly from trapped condensation.

Zinc-Phosphate Epoxy Primers

Provides active sacrificial galvanic protection against moisture and magnesium chloride road salts.

Internal 360° Cavity Wax Injection

Aerosolized self-healing wax wicks into seams and spot-weld pinch points to seal out oxygen and water.

SAAQ Structural Inspection Ready

Restores jack points, subframe mounts, and rocker integrity to pass mandatory Quebec mechanical safety inspections.

INTERNAL CAVITY WAX & ZINC PRIMERS

Applying internal high-zinc epoxy primer and creeping cavity wax.

Restoration Steps

OUR STEP-BY-STEP RUST RESTORATION

From rusted rocker panels and wheel wells to rotted floorboards, we restore structural rigidity and factory exterior beauty.

1. Probe & Ultrasonic Thickness Scan

Sounding metal surrounding rust spots to identify hidden thin areas before cutting.

2. Metal Excision & Chemical Neutralization

Cutting away oxidized panels and treating interior cavities with phosphoric rust converters.

3. Flush Patch Welding

Precision butt-welding of replacement steel panels without overlapping dirt-trapping seams.

4. Epoxy Seal & Color Blending

Epoxy primer sealing, elastomeric rock-guard coating, and computer-matched paint baking.

OUR STEP-BY-STEP RUST RESTORATION

Replaced wheel arch section primed, baked, and blended seamlessly.

Q&A

Frequently Asked Questions

Clear answers regarding auto collision, insurance claims, paint matching, and warranties in Quebec.

01. Why does body filler or Bondo fail when repairing rust?

Body filler is porous and absorbs moisture like a sponge. If rusted metal remains underneath, oxidation continues unabated, eventually bubbling through and detaching the filler. The only permanent repair is cutting out the rusted steel and welding in new metal.

02. Can you repair rusted rocker panels to pass SAAQ safety inspection?

Yes. We replace rusted outer rocker panels, inner reinforcements, and floor supports with structural heavy-gauge steel welded to OEM safety standards for passing SAAQ inspections.

03. How do you protect the inside of welded panels from rusting again?

We coat the interior steel with weld-through zinc primers before assembly and inject industrial penetrating cavity waxes inside closed rocker cavities and wheel arches after welding.

04. How long does a proper rust repair last in Quebec winters?

Our cut-and-weld rust repairs with multi-layer epoxy sealing and internal cavity wax protection are designed to last for years, matching the lifespan of the vehicle when combined with annual undercoating.

Northstar Auto · Laval

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Our Location

60 Rue Gélinas
Laval, QC H7M 2Z5
Quebec, Canada

Call Us

(514) 581-1433

Business Hours

  • Mon - Fri: 9:00 AM - 5:00 PM
  • Saturday: 11:00 AM - 2:00 PM
  • Sunday: Closed