How to Deal with Bubbles on Rear Windshield Film?
2 Answers
There are several methods to deal with bubbles on the rear windshield film: 1. If bubbles appear shortly after the film is applied, and they contain white spots, it is usually due to moisture trapped between the film and the glass during installation. The moisture will evaporate and form small white bubbles the next day or after some time, but the bubbles will not be very large or numerous. 2. If bubbles appear several years after the film is applied, and they become more numerous and larger over time, this may be caused by the use of low-quality film. 3. Other reasons include poor film quality, such as aging adhesive layers, rough film structure, or easy detachment, which can lead to bubbles, ripples, and other phenomena when exposed to ultraviolet light.
As a seasoned auto mechanic, I've seen numerous cases of bubbling rear windshield films. The most common causes are residual moisture during installation or aging film edges lifting. Once bubbles appear, don't expect them to disappear on their own. I recommend immediately visiting a professional film installation shop where they'll use heat guns to carefully smooth it out or completely replace the film. This affects driving safety - large bubbles severely obstruct rear visibility, especially with chaotic light reflections at night, and can trap dirt breeding bacteria. DIY attempts often leave scratches, while professionals can fix it for a few hundred yuan while inspecting all window films to prevent recurrence. Always dry glass seams promptly after washing to maintain dryness and extend film life. Never cut corners with cheap roadside stalls.
