Hyundai Grandeur GN7 Ceramic Coating Review: Cost & Results

Hyundai Grandeur GN7 Paint Condition Diagnosis & Prep

The new Hyundai Grandeur GN7 is a popular choice, and many owners want to keep its paint looking pristine. While it arrives with a sleek finish, a closer inspection under proper lighting often reveals minor swirl marks, hairline scratches, or uneven gloss that regular washing can't fix. This review details the process of enhancing a Grandeur GN7's paint condition through polishing and a ceramic coating application.

Thorough Preparation and Masking for Optimal Results

Before any polishing begins, meticulous preparation is key. The process starts with a detailed inspection of the paintwork. For the Grandeur GN7, with its expansive, flat panels prone to showing swirls, this step is crucial. Contaminants like iron particles, tar, and general road grime are removed through a multi-stage decontamination wash. Skipping this can lead to the polishing pads picking up debris, causing new scratches. Following decontamination, all trim, rubber seals, plastic parts, and edges are carefully masked. Precision masking, especially on a car with the Grandeur GN7's design lines, ensures a clean finish and prevents polish or coating from getting into unwanted areas, which is vital for the final aesthetic.

Paint Correction and Ceramic Coating Application

The goal of paint correction isn't to remove as much clear coat as possible, but to safely restore the paint's clarity and remove imperfections. For this Grandeur GN7, the focus was on preserving the clear coat while addressing visible swirls and scratches. The polishing process involved distinct stages of cutting and finishing, tailored to the specific condition of each panel. After polishing, the paintwork exhibited a uniform, sharp reflection. The final step was the application of an ONYX nano ceramic coating. This hydrophobic coating adds a durable layer of protection, enhancing gloss and making future maintenance easier. The average cost for this type of comprehensive paint correction and ceramic coating service in Korea can range from approximately ₩400,000 to ₩800,000 (roughly $300-$600 USD), depending on the vehicle size, the extent of correction needed, and the specific product grade used.

Installation process:

1. Surface Decontamination: Thorough washing, iron removal, and tar removal to eliminate all surface contaminants.
2. Paint Correction: Multi-stage polishing to remove swirl marks, scratches, and restore gloss.
3. Masking: Protecting trim, plastics, and rubber from polishing compounds and coating.
4. Ceramic Coating Application: Applying the nano ceramic coating evenly across all painted surfaces.
5. Curing: Allowing the coating to properly bond with the paintwork.

After the ceramic coating cured, the Grandeur GN7's paintwork displayed a deep gloss and a slick, hydrophobic surface, making water bead and roll off effortlessly. This level of protection not only enhances the car's appearance but also simplifies washing and maintenance, safeguarding the investment in the vehicle.