Is it necessary to apply a waterproof film on heated rearview mirrors?
2 Answers
If your car has the rearview mirror heating function, there is no need to apply a waterproof film. In rainy weather, simply turning on the heating function can dry the water droplets on the mirror surface. Functions of rearview mirror waterproof film: The rearview mirror waterproof film has excellent hydrophobic properties, effectively preventing rainwater from adhering and avoiding obstruction of the rearview vision, thereby improving driving safety in rainy conditions. High-quality films offer high clarity and also feature waterproof, anti-fog, anti-dust, anti-scratch, and anti-fingerprint functions, keeping the mirror surface clear at all times and eliminating the troubles of driving in the rain. Functions of rearview mirror heating: During the rainy season or in winter when the rearview mirrors frost or freeze, the rearview mirror heating can quickly remove fog or ice from the mirrors, enhancing driving safety.
In my experience, the rearview mirror heating function is already highly effective at evaporating water droplets and fog, especially providing clearer visibility during rainy drives. The waterproof film is an additional coating that helps rainwater slide off faster with less residue, but it's not essential. I believe installing it in humid regions or during rainy seasons can enhance performance, as the film also protects against minor scratches and mirror surface oxidation. DIY installation is quite affordable, costing around tens of yuan, and can be purchased online for a try. However, the heating feature alone is sufficient for daily use, so unless you frequently drive in mountainous areas or pursue perfection, it's not a must-have. Regular maintenance and cleaning to ensure proper functionality is the most practical approach – my car's heated mirrors rarely require additional intervention.
