The answer to 'why is my window stained' is that there are several common causes for stained windows, including mineral buildup, hard water spots, and environmental factors like pollution or tree sap. Window stains can appear as hazy, streaky, or cloudy areas on the glass and can be difficult to remove if left untreated.
Mineral buildup from hard water is one of the most common culprits. As water evaporates, it leaves behind mineral deposits that adhere to the glass. Hard water stains are often difficult to remove and may require specialized cleaning solutions or professional help. Environmental factors like pollution, tree sap, or even bird droppings can also lead to stubborn window stains that are challenging for homeowners to clean on their own.