What Causes the Loud Noise from Wipers After Windshield Coating?

[AlexanderRose]

The reasons for loud noise from wipers after windshield coating are as follows: 1. Wiper blade aging: Wiper blades are made of rubber, and prolonged exposure to sunlight, wind, and rain can easily cause aging. Generally, the lifespan of wiper blades is about one to two years. 2. Foreign objects between the wiper and windshield: This is a common issue, mainly caused by small debris, sand, or other particles. Not only does it create noise, but it can also scratch the windshield. Simply removing the foreign objects will solve the problem. 3. Damage to the wiper linkage mechanism: This type of issue may arise from faults or rust deformation in the motor or linkage mechanism, leading to noise and other problems. In such cases, it is necessary to visit a repair shop for professional inspection and repair. 4. Wiper arm angle issue: This requires adjustment by a professional.

[MacCarter]

As someone with some knowledge of car maintenance, I know that squeaking wiper blades after glass coating is quite common, mainly because the coating alters the texture and smoothness of the glass surface, increasing the friction coefficient. The rubber wiper blade cannot slide smoothly, resulting in a squeaking sound. This usually occurs when the coating layer hasn't fully cured or has residue, causing the wiper blade to be pulled and deformed. Additionally, issues like aging wiper blades or material incompatibility can exacerbate the problem—for example, rubber that has hardened after more than six months of use will amplify the noise. To address this, I first use a professional glass cleaner to thoroughly wipe the glass, removing grease and dust to ensure a smooth surface. Then, I check the condition of the wiper blades; if they show significant wear, I replace them directly with a type designed for coated surfaces to reduce friction. After coating, it's best to let the car sit for a day or two to allow the coating to stabilize before using the wipers. If the noise persists, it might be due to poor coating quality or installation issues, requiring professional inspection to avoid damaging the windshield. Remember to avoid wiping on dry glass in daily use, and spraying windshield washer fluid for lubrication can help alleviate the noise.

[FrankLynn]

Having driven for over a decade, I've encountered similar issues. The squeaking of wipers after glass coating mainly stems from surface incompatibility. The coating layer makes the glass harder, but the wiper rubber is still accustomed to the original smoothness, causing loud friction noises when wiping. It gets worse when the coating isn't fully dried or has tiny bubbles. Another cause lies in aging wiper blades or dirt and dust buildup, which increases resistance. My personal approach is to first check if the wipers are clean—run a finger along the blade to check for cracks. If they're in poor condition, replace them with new ones. For new wipers, don’t opt for cheap options; silicone material is more suitable for coated surfaces. Meanwhile, try cleaning the glass with a vinegar-water mixture to remove residues. This noise occurs more frequently in cold weather, so I recommend covering the car with a car cover after parking to avoid sunlight accelerating deterioration. If the noise persists, it’s best to visit a repair shop and have a technician adjust the wiper arm angle to ensure proper fit and avoid damaging the glass. For routine maintenance, don’t forget to regularly spray windshield washer fluid for lubrication—a simple action that can make driving quieter.

[TuckerLee]

I found that the main reason for wiper noise after glass coating is that the glass surface becomes too slippery, causing the wiper blades to lose grip and jump, resulting in noise. This commonly occurs due to coating residue or wiper aging, such as hardened rubber losing elasticity. Replacing with new wiper blades is a simple solution—choosing models specifically designed for coated glass will provide better fit and reduce noise. Check if the glass is clean by wiping it with a microfiber cloth to avoid oil residue. Noise is less during heavy rain when lubrication is better, while dry wiping tends to be noisier. I recommend spraying windshield fluid to wet the surface before using the wipers each time. For long-term coated car owners, developing this habit will naturally reduce noise. If the issue persists, visit a repair shop to ensure proper installation and avoid DIY adjustments to prevent accidents.