Wiper Maintenance That Protects Your New Windshield
Old wiper blades are one of the most common causes of windshield scratching, and scratches in the driver's sightline are not repairable.
Key Takeaways
- Replace blades every six to twelve months regardless of appearance
- Never run wipers on a dry or gritty windshield
- Grit trapped under a blade scores glass permanently
- Scratches in the driver's viewing area cannot be polished out safely
How wipers destroy glass
A wiper blade is a squeegee that traps whatever is on the glass against the glass. When the rubber hardens with age, it stops conforming and starts skipping, and any grit caught at the edge is dragged across the surface under load. The result is a fine arc-shaped scratch pattern that follows the wiper sweep exactly.
The rules that actually matter
Never run the wipers on a dry windshield, and never use them to clear heavy grit or ice. Use washer fluid first, always. Lift the blades before scraping ice, and replace blades on a schedule rather than waiting for streaking.
If a blade chatters or leaves a band it did not leave last month, it is already past due.
Why scratches are worse than chips
A chip is a discrete defect that can be filled. A scratch pattern is distributed surface damage across the exact area you look through, and it scatters oncoming headlights at night. Glass polishing removes material and introduces optical distortion, which is unacceptable in the driver's viewing area. The fix is replacement.