RUSTPROOFING UNDERCOATING.
Winter Chemical Corrosion Defense

RUSTPROOFING UNDERCOATING.
MAXIMUM CORROSION DEFENSE.

Quebec uses millions of tons of calcium and magnesium chloride salt each winter. Our creeping, non-drip penetrating oil treatments displace moisture and seal steel frames.

Chemical Barrier Defense

CREEPING PENETRATING OIL VS THICK RUBBERIZED COATINGS

Thick tar or rubber undercoatings can crack with age, trapping saltwater against the steel like a moisture pouch. We apply specialized solvent-free creeping paraffin-oil formulations that migrate into micro-crevices and actively repel water.

Active Moisture Displacement

Chemo-migrates along spot-welds, seam sealer joints, and pinch welds to push out moisture.

Solvent-Free & Eco-Friendly Formula

Will not degrade vehicle rubber weatherstripping, ABS sensor wires, or electrical harness insulation.

Subframe & Brake Line Preservation

Coats steel fuel lines, brake hard-lines, suspension links, and unibody rails with a durable hydrophobic film.

CREEPING PENETRATING OIL VS THICK RUBBERIZED COATINGS

High-pressure 360-degree wand fogging inside rocker panel drain cavities.

Hidden Cavity Protection

360-DEGREE INTERNAL WAND ATOMIZATION

Rust destroys vehicles from the inside out where dirt and slush accumulate in unwashed rocker panels, door bottoms, hood lips, and tailgate folds.

Door & Tailgate Hem Seams

Fogging the inner lower edges of all doors and trunk lids through factory drain holes.

Inner Rocker Panels & Pillars

Accessing boxed rocker sections to prevent winter brine from rotting jack points and floor supports.

EV & Hybrid High-Voltage Safe

Carefully avoiding high-voltage orange wiring conduits while protecting lower battery shield mounting bolts.

360-DEGREE INTERNAL WAND ATOMIZATION

Spraying high-pressure atomized rust inhibitor inside tailgate hem seams.

Application Steps

OUR SYSTEMATIC UNDERCOATING PROCESS

Every vehicle is elevated on hydraulic lifts and prepped to ensure 100% complete coverage.

1. Undercarriage High-Pressure Prep

Power washing accumulated dried mud and salt residues from wheel wells and subframe pockets.

2. High-Velocity Air Drying

Drying moisture from seams before oil application to maximize bonding penetration.

3. High-Pressure 120 PSI Fogging

Using flexible specialized wand tips to coat all boxed structural channels.

4. Drain Hole Unblocking & Clean-Up

Verifying all door drain grommets remain clear so trapped rainwater drains freely.

OUR SYSTEMATIC UNDERCOATING PROCESS

Complete underside treated with uniform, semi-transparent moisture-repellent barrier.

Q&A

Frequently Asked Questions

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

01. When is the best time of year to apply rustproofing in Quebec?

Late summer and autumn (August to November) is ideal before winter salt is applied, but our moisture-displacing formula can be applied year-round, even in spring to neutralize residual salt.

02. Do you drill holes into my car's body panels?

We prioritize using factory rubber plugs, grommets, and drain holes. If drilling a small hole in an enclosed door jamb is necessary to reach a blind cavity, we coat the raw hole with zinc and install a clean OEM plastic plug.

03. Will the oil treatment drip onto my driveway?

Our modern high-adhesion paraffin formulas are virtually non-drip. Any minor drainage from door weep holes ceases within 24 to 48 hours.

04. Is rustproofing safe for electric and hybrid vehicles?

Yes. Our technicians are trained to avoid orange high-voltage cabling and battery pack cooling systems while protecting vulnerable steel suspension links and subframes.

Northstar Auto · Laval

Request a Free Estimate

Request a Free Estimate

Fill out the form below and our Laval team will get back to you shortly to schedule an appraisal or answer any questions.

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