“Hard Water Stains on Windows: Causes, Fixes, and Prevention Tips”

If you’ve ever noticed cloudy white spots or streaks on your windows that won’t go away, you’re seeing the effects of hard water. When water containing minerals like calcium and magnesium dries on glass, those minerals bond to the surface and leave behind stubborn marks that can dull your windows over time. These stains often come from sprinkler overspray, rainwater runoff, or cleaning with untreated tap water. The best way to prevent them is to adjust your sprinklers, clean windows regularly, use purified water for washing, and apply a protective sealant that helps repel water and dirt. Once hard water stains start to etch into the glass, they can’t be removed safely with regular cleaning products. That’s when it’s time to call Top Haus Exteriors — we use professional tools and treatments to remove mineral buildup and restore your windows to a clear, streak-free shine.