Understanding and Identifying the Cause of Unusual Window Scratches

Have you noticed some new, noticeable straight scratches on the outside of your windows, even though you live four floors up? Before you panic and call a window cleaner or suspect broken glass, it's important to understand the potential causes and how to identify them.

The Most Obvious Causes

While it might seem unlikely given your height, the most obvious culprits are:

Tall Trees

Even from a height of four floors, tall trees can still cause scratches on your windows. If branches from nearby trees are close enough, they can rub against or collide with your windows, causing scratches. While these are more likely during windy conditions, it's a possibility worth considering.

Birds Pecking on Glass

Another potential cause is birds pecking on the glass. Birds, especially those in flocks or in migration, might accidentally peck on your windows, leaving behind scratches. This is more common if your windows have decorations or light patterns that might attract birds.

Window Cleaning

Window cleaners might also be the culprit. While professional window cleaners are trained and use appropriate techniques, sometimes they can still cause minor scratches or stumble with their equipment. This is less likely if the scratches are straight and uniform.

Less Obvious but Common Causes

One less obvious but more likely cause, especially if you live in areas with diverse wildlife, is raccoon damage.

Raccoons Imparting Damage

Raccoons are known to damage windows and glass surfaces due to their digging and scratching behavior. They can leave behind scratches that mimic the straight lines you're seeing. Raccoons have claws that can embed gravel or grit, which can cause considerable damage to glass. This grit is almost as hard as a diamond, making it very effective at scratching glass surfaces.

If you suspect raccoon damage, look for other signs of their presence such as droppings, overturned garbage, or tracks near the window area. It's also worth checking for any damage to your roof or siding, as raccoons might be trying to access higher areas.

What to Do Next

Once you've identified the potential cause, the next step is to address the issue:

Tree Management

If tall trees are the cause, consider trimming branches that are close to your windows. This can prevent future scratches and also address any other issues the branches might be causing.

Bird Deterrence

For bird pecking, you can use window film or stickers to obscure the glass and make it less appealing to birds. Bird deterrents can be purchased online or at local hardware stores.

Professional Inspection

If you suspect raccoon damage, it's a good idea to contact a wildlife control service. They can safely remove the raccoons and seal off entry points to prevent future damage.

Further Prevention

To prevent further scratches, especially from raccoon damage, you can:

Cover the windows with a mesh or screen during vulnerable periods. Use visual deterrents like scarecrows or motion-sensing lights to deter birds. Secure any garbage to discourage raccoons from lingering near your property.

Conclusion

Identifying and addressing the cause of window scratches can save you time, money, and reduce the possibility of further damage. By understanding the common causes and taking proactive measures, you can keep your windows free from unwanted scratches and maintain the beauty and integrity of your home.