Hard Water & Mineral Stains on Glass
South Florida’s hard water leaves behind calcium and mineral deposits that build up on glass and, left long enough, etch into the surface. Sprinkler overspray, salt air, and mineral-heavy tap water are the usual culprits on exterior windows and patio doors. Cleaning alone won’t clear stains that have started to etch — restoration removes the mineral buildup and polishes the affected surface back toward clear.
• Cloudy or spotted exterior windows from sprinkler overspray.
• White, chalky mineral film that returns no matter how you clean.
• A rough, hazy feel where hard water has begun to etch the glass.