What to Do When Side Windows Get Blurry on Rainy Days?
2 Answers
Solutions for blurry side windows on rainy days: 1. Use a specialized waterproof spray by applying it to the side windows. Waterproof sprays come in two types: spray-on and wipe-on, both of which can effectively prevent side window blurring. 2. Install rain deflectors on the side windows. Rain deflectors can effectively keep the rearview mirrors clean and prevent rainwater from hitting the side windows. Car glass is manufactured by heating the glass in a furnace to near its softening temperature, then quickly transferring it to air grids with varying cooling intensities for uneven cooling. This process creates different stresses between the main viewing area and the peripheral areas of the glass, resulting in a type of glass known as zone-tempered glass.
I've been driving for twenty years, and foggy side windows on rainy days are all too common, especially when stuck in traffic in old urban areas. My advice is not to panic at the first sign. First, press the defog button on the dashboard—usually marked with a fan icon—turn it on, then aim the vents at the side windows with either cold or warm air, cranking up the fan speed. The fog should clear within minutes. If excessive raindrops are the issue outside, make sure your wiper blades are clean, replace the rubber strips regularly, or apply a rain repellent like Rain-X on the glass. Avoid leaving damp items inside the car, and cracking the windows slightly for airflow helps too. For a long-term solution, consider an annual glass deep-clean or applying anti-fog film for hassle-free maintenance. Safety always comes first—if visibility is severely compromised, pull over safely before handling the situation.
