Audi A6 Window Tinting Review: Rainbow Film I90 Black

Audi A6 Window Tinting: Why a Refresh Was Necessary

The owner of this Audi A6 sought a window tinting refresh in Daegu due to issues with the existing film. Problems included bubbling along the rear defroster lines and a tear in the front windshield film. Neglecting these issues can lead not only to aesthetic problems but also to reduced UV protection and potential moisture ingress into the cabin. After an inspection, a full re-tint was deemed the most effective solution.

Vehicle: Audi A6
Service: Full window tinting re-application + Door edge PPF
Film Used: Rainbow I90 Black
Location: Todays Car Daegu Branch
Time: 5-6 hours (including cleaning, old film removal, and new tint application)

The Key to a Successful Tint Re-application: Thorough Cleaning

While applying new window film is similar to the initial installation, the crucial difference in a re-tint lies in the preparation. The success of a re-application hinges on the meticulous removal of old adhesive residue and any remaining film particles. Inadequate cleaning can result in uneven adhesion, leading to bubbles or air pockets under the new film.

Upon arrival, the existing tint on the Audi A6 showed clear signs of wear. The front windshield had a noticeable horizontal tear, and the rear window exhibited 'bubbling' – a phenomenon where the adhesive degrades and separates from the glass, often due to heat exposure or poor initial installation quality. This bubbling indicates a failure in the film's integrity and the adhesive bond.

Old Film Removal: Precision is Paramount

The re-tinting process begins with the careful removal of the old window film. For vehicles like the Audi A6 with heated rear defrosters, this requires a delicate approach. Using a heat gun and scraper, the film is gently warmed and lifted to avoid damaging the delicate defroster lines. Precise temperature and angle control are essential to prevent costly repairs to the defroster grid.

Once the film is removed, adhesive residue often remains on the glass. If not completely removed, this residue will prevent the new film from adhering smoothly, causing unsightly distortions. The cleaning process involves using specialized solvents and manual scraping to achieve a perfectly smooth glass surface, ensuring optimal adhesion for the new window film.

Why Choose Rainbow I90 Black Window Film?

The Rainbow I90 Black film offers a compelling balance of performance and aesthetics, making it a popular choice, especially among premium car owners. It provides excellent UV protection (99%+) and a comfortable visible light transmission rate. The 'I90' designation specifically refers to its high infrared rejection rate, offering up to 90% heat rejection. This translates to a cooler cabin interior, even on hot days.

Its deep, pure black tone enhances the sophisticated look of luxury sedans like the Audi A6, elevating the vehicle's overall appearance. This dark aesthetic, combined with its high-performance characteristics, makes it a favored option for those seeking both style and comfort.

The Installation Process: A Meticulous Sequence

The re-application process follows a specific order to ensure the best results and minimize risks, especially concerning the rear defroster.

1. Rear Window First: Unlike initial installations, re-tints often start with the rear window. This allows technicians to manage heat application carefully without risking damage to the defroster lines.
2. Heat Shaping: Before applying the film to the rear window, a crucial step called 'heat shaping' is performed. The film is heated and carefully molded to match the specific curvature of the glass, ensuring a seamless fit.
3. Side Windows: Following the rear, the side windows are tinted.
4. Front Windshield Last: The front windshield is typically tinted last. This allows the technician to maintain optimal temperature control during the application process, further minimizing any potential heat-related risks to other components.

This methodical approach ensures that each section of the Audi A6 receives precise attention, resulting in a flawless finish that enhances both the look and comfort of the vehicle.