Rust Check Two-Step Application Process

For more than five decades, Canadian drivers have trusted Rust Check to protect their vehicles from corrosion. What makes Rust Check different is its unique Two-Step Application Process, a system designed to provide complete protection by addressing both the hidden areas inside your vehicle and the exposed undercarriage surfaces.

Every vehicle is made up of thousands of seams, folds, joints, and weld points. These areas are highly vulnerable to moisture and salt but require different solutions. One product alone cannot effectively protect the entire vehicle. That is why Rust Check uses two complementary products—Rust Check and Rust Check Coat & Protect—each tailored to specific areas of your car or truck.

Step 1: Rust Check (Inside Body Panels and Hidden Areas)

Modern vehicles are full of hidden crevices-places you can’t see but where corrosion begins. Inside doors, quarter panels, fenders, trunk lids, and around spot welds, road salt and moisture collect and create the perfect conditions for rust to spread.

Rust Check is a light, oil-based liquid that is applied as a pressurized spray. Its thin consistency allows it to penetrate deeply into seams and crevices where thicker coatings simply cannot reach. Once inside, Rust Check displaces moisture and leaves behind a protective layer of corrosion inhibitors. This invisible barrier bonds to the metal, preventing water and oxygen from making contact-the two key elements rust needs to form.

Because it remains active and mobile, Rust Check continues to creep into new seams over time. The result is superior protection for the structural integrity of your vehicle, reducing the risk of hidden rust that can weaken panels and compromise safety.

Step 2: Rust Check Coat & Protect (Undercarriage and Exposed Areas)

While Step 1 protects the inside, the undercarriage is constantly exposed to harsh Canadian driving conditions. Salt, slush, gravel, and water spray attack the bottom of your vehicle daily throughout the winter months. This is where Rust Check Coat & Protect comes in.

Coat & Protect is a premium undercarriage treatment that forms an adhesive, wash-resistant, and self-healing film. Unlike traditional undercoatings that harden, crack, or trap moisture, Coat & Protect remains flexible and durable. It eliminates dripping, resists wash-off, and continues to protect even when exposed to gravel impact or road spray.

In addition to shielding against rust, Coat & Protect enhances the appearance of the undercarriage and lubricates as it protects-offering both cosmetic and functional benefits.

Why the Two-Step System Works

By combining both products, Rust Check provides complete inside-out protection:

• Rust Check penetrates the seams, folds, and hidden areas where rust begins.

• Coat & Protect guards the exposed undercarriage and high-impact zones.

• Together, they form a dual barrier that keeps corrosion from taking hold.

This system has been trusted since 1973 and is applied only by trained technicians at authorized Rust Check centres. It’s backed by renewable, transferable warranties, giving drivers peace of mind and long-term value.

Built for Canadian Roads

Canada’s climate is one of the harshest for vehicles. Road salt, freezing rain, and constant freeze-thaw cycles accelerate rust at an alarming rate. The Rust Check Two-Step Application Process was developed specifically for these conditions, ensuring drivers across Ontario and Canada have the protection they need year after year.

The Rust Check Two-Step Application Process is more than just a treatment-it’s a proven system that helps extend vehicle life, maintain safety, reduce costly repairs, and preserve resale value.

Protect your vehicle’s value from rust.

Book your annual Rust Check today and see why drivers across Ontario and Canada continue to choose us over traditional sealants.

Find a Rust Check Centre near you quickly and easily.

Thunder Bay Residents:
If you’re in the Thunder Bay area, schedule your annual Rust Check with your local centre today and give your vehicle the trusted protection it needs to withstand harsh northern winters.