
Rain will not affect newly applied car window tint because the tint is applied to the inside of the windows, meaning it is protected from external environmental damage. Functions of car window tint: The primary functions are to block ultraviolet rays, reduce heat, prevent injuries from shattered glass, reduce glare, and, due to the one-way visibility feature of the tint, protect personal privacy. Introduction to car window tint: Car window tint involves applying a thin film to the front and rear windshields, side windows, and sunroof. This film is also known as solar film or heat-insulating film. High-quality films typically have a UV blocking rate of no less than 98%, with some even reaching 100%.

When I was applying the window tint, it happened to be pouring rain, and it was such a headache. The first few days after applying new tint are crucial because the adhesive hasn’t fully dried yet. The heavy rain not only washed in dust, causing bubbles, but also weakened the adhesive, making the edges prone to lifting. I remember that time when the tint bubbled up, and I had to spend hundreds to redo it—totally not worth it. Now I’ve learned my lesson: after applying tint, I avoid rain for at least 24 to 48 hours, either parking in a garage or using a rain cover. A light drizzle might be fine, but heavy rain and water pooling put pressure on the tint, speeding up aging. Regular maintenance is also important—don’t rush to wash the car; wait a week or two before doing so.

I feel like a newly installed car film is similar to a freshly renovated house—it needs careful handling. When it rains, those tiny water droplets can seep into the film seams, diluting the adhesive, and over time, the film is more likely to peel off. Moreover, rainwater often carries impurities like dirt or small particles, which can stick to the film and become difficult to clean, leaving the surface looking blotchy after a few days. I’ve experienced something similar before—I didn’t pay much attention to rain after installation, and the film bubbled up even faster under the summer heat. My advice is to choose a sunny day for installation and avoid rainy forecasts. Also, ventilating by opening windows is necessary, but avoid heavy rain exposure to prevent future repair hassles.

Getting your car tinted right before rain is really not ideal. The film requires a natural curing process, and high humidity can significantly slow down the drying speed. What normally hardens in one or two days might take over three days, and if it doesn't adhere properly, all your effort goes to waste. With heavy rain, the risk of water bubbles forming under the film, which can obstruct your view, increases dramatically. I always check the weather forecast before getting my car tinted and choose a dry day to do it. If it suddenly rains, act quickly—roll up the windows tightly to prevent drafts and park the car in a garage to avoid the rain. By the way, different types of tint films react differently to moisture, with darker films being more sensitive to humidity. In short, wait until the rain stops before using your car normally.


