TIPS & FAQ

Signs of Wiper Blade Wear

Extended exposure to temperature extremes, UV, ozone, road salt, oil, automatic car washes, and of course regular use can all contribute to wiper blade wear.

Worn wiper blades can limit driving visibility, which is potentially unsafe. Experts recommend that you check your blades at least once every six months and replace them if they are worn. But what are you looking for?

To help you recognize the signs of blade wear, here is a list of the five major signs of wiper blade wear. These include:

Streaking – cracked and hardened rubber leaves bands of streaks photo

Visual inspection of the wiper blade reveals rubber that has hardened and/or cracked due to exposure to the sun’s ultraviolet rays, tree sap, and road tar, automotive chemicals like oil, brake fluid, coolant, and road grit. Bands of water remain after each wiping stroke.

Chattering – rubber develops a set or curve that causes blade to skip and vibrate photo

Extreme hot or cold temperatures or extended periods of non-use can cause blades to exhibit chatter, as the blades skip and vibrate over the windshield. The characteristics to look for include a choppy wiping action or an overall performance set or curve to the blade rubber in one direction and a smeared windshield appearance while wiping.

Smearing – age or physical damage that results in unwiped areas photo

When the wiping edge of the blade is no longer sharp, but rounded in shape or appearance, the wiper will smear the water across the windshield instead of clearing it off. This causes cloudy and impaired visibility.

split rubber – age or physical damage that results in unwiped areas photo

Age or physical damage to blades can result in unwiped areas. A visual inspection of the blade can help determine if there is physical damage.

squeaking – rubber does not move quietly across the glass photo

The old or worn rubber of the blade does not move quietly across the windshield.

When is it time to change your wiper blades?

It is generally recommended to change wiper blades every 6 months. Check your owners manual for specific recommendations for your vehicle.

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What are the warning signs that a blade is worn out?

The most common warning signs signaling time for replacement include dry, cracked or split rubber or damage to the wiper arm assembly (e.g. bent or broken metal) which can result in streaking, chatter or scratching of the windshield.

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What is chattering?

When blades skip and vibrate, display a choppy wiping action or smear water, this is called chattering, and can be caused by extreme hot or cold temperatures or extended periods of non-use.

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What may cause the wiper blade to streak?

When wiper blades streak instead of fully clearing the windshield, it can be a sign that exposure to the sun’s ultraviolet rays, tree sap, road tar, and automotive chemicals like oil, brake fluid, coolant, and road grit has caused the rubber to harden or crack.

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What may cause the wiper blades to squeak?

As blades age, old or worn rubber will not move quietly across the windshield; squeaky blades are another sign it is time for replacement.

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What may cause the blades to smear water instead of cleaning the windshield?

When the blades smear water instead of clearing, causing cloudy and impaired visibility, this is often caused by blade edges that have worn and are no longer sharp.

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What are some other signs a wiper blade is not operating correctly?

Another sign might be when the blade has lost contact with the windshield due to damage to the wiper arm assembly itself. This can be caused by automatic car washes and aggressive removal of snow and ice.

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What conditions may tend to shorten blade life?

Rubber is the most important part of a wiper blade and the sun’s ultraviolet rays, automatic car washes and extended periods of non-use can all take their toll on blade life. Damage to a wiper arm, often a result of automatic car washes or aggressive removal of snow and ice buildup, can cause the blade to lose contact with the windshield, negatively impacting performance.

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How to find the appropriate size wiper blade for vehicles?

To find the correct wiper blade size(s) for vehicle(s), it is recommended to consult the owners manual, or vehicles part finder for the correct part numbers for your vehicle. Retail store personnel are generally happy to help you with locating the correct wiper blades.

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*follow manufacturer's use instructions

Do I need to clean the scratch before I make the repair?

Yes, we suggest using an automotive grade car wash detergent. Clean the scratch and then make sure it is dry with a lint free cloth.

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Can I use this product on other painted surfaces such as fiberglass?

The DuPont™ Pro-Fusion Color™ Scratch Repair Stick is only recommended for use on automotive paint surfaces.

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Do I need to buy a different color for each car that I have?

No, the DuPont™ Pro-Fusion Color™ Scratch Repair Stick works on the clear coat of all cars to seal in the scratch protecting the car's finish against rust and grime.

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Will the tip of the stick go hard?

Once you have completed your repair, you must re-snap the cap back in place securely. This will prevent the tip from drying out.

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How long does the product take to dry?

The time it takes for the formula to harden depends upon a whole variety of external factors such as temperature, wind, etc. We recommend that you leave the product to harden for up to 30 minutes.

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Should I remove any excess product from the car surfaces?

Yes, once you have applied the DuPont™ Pro-Fusion Color™ Scratch Repair Stick, quickly remove any excess with a clean dry cloth.

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Do I need to leave the repair in the sunlight in order for the repair to harden?

No, unlike other products on the market, DuPont™ Pro-Fusion Color™ Scratch Repair Stick is activated by a solvent process. It will harden outside, or inside your garage.

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In case I make a mistake in applying the product, and I want to remove it after it has hardened, how can I remove it?

In the unlikely event event that this happens, you are able to remove DuPont™ Pro- Fusion Color™ Scratch Repair Stick with the use of xylene*, which can be found at most good hardware stores.

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*follow manufacturer's use instructions