As you learned earlier, oxidization can occur and damage your windows. But, if you already have oxidized glass, it will appear hazy and have a white etched look.

Cause: Metal around exterior window has been exposed to rain or humid conditions causing the metal to slowly deteriorate and become oxidized.

Mostly seen on windows with metal frames or metal screens, this condition penetrates exterior glass surfaces and renders regular window cleaning techniques ineffective.

Again, in most cases the glass can be restored. But, prevention is always the best solution! So, if you have exterior metal window screens, replace them with new screens made of fiberglass. Or, simply remove the screen permanently… It will improve your view!