Why are there many small dots on the newly installed front windshield film?
2 Answers
The main reason is that some dust fell during the film installation process, causing these dust particles to be trapped inside. Below is an introduction to the causes and solutions for small dots appearing on the film: 1. Difficulty in shrinking and fitting bubbles at the edges of the front and rear windshields: The film edges are cut by pressing against ceramic dots, which then creates bubbles inside. Solution: After pre-shaping, perform precise cutting along the smallest edge of the ceramic dots during fine trimming. This makes it easier to fit and remove bubbles inside, especially for dry adhesive films. Avoid pressing against ceramic dots during cutting, as this can make fitting even more difficult and may even render the entire film unusable. 2. Difficulty in fitting bubbles around the defogger lines on the rear windshield: The rear windshield has defogger lines connected to ceramic dots, making it hard to fit bubbles on both sides. Solution: After pre-shaping, cut along the smallest part of the ceramic dots during trimming, avoiding pressing against the dots. When installing the film inside, please note that bubbles may appear where the film presses against the defogger lines. These bubbles must be transferred to the blank areas between the two defogger lines. Use a heat gun to shrink the film again. For glass with more prominent defogger lines or metal lines, dry heat pre-shaping is recommended.
I just had my front windshield film installed and noticed many tiny dots on it, which are usually caused by uneven adhesive application or fine dust particles getting trapped during the installation process. Before applying car window film, the glass surface must be thoroughly cleaned using professional tools to remove contaminants. However, even slight negligence can allow airborne dust or oil from fingers to stick, drying into small dots resembling millet grains. Worse, if the squeegee step during installation isn't done properly, leaving the adhesive layer uneven, bubbles or glue spots may remain. These dots aren't just unsightly—they can also impair visibility, especially at night when reflections become more pronounced. Avoid washing your car or wiping the glass for a few days after installation to allow the adhesive to cure; typically, waiting 72 hours ensures better stability. If there are excessive dots, I recommend returning to the installation shop immediately for inspection, letting them rework or replace the film, rather than attempting to scrape it off yourself and risk damaging the glass.
