Cleaning exterior windows in Naples is more demanding than anywhere else in Florida. Salt deposits from Gulf air, mineral buildup from irrigation overspray, and the daily cycle of rain and evaporation create layers of contamination that standard cleaning techniques can’t fully address. Here’s how to do it correctly.

Step 1 — Assess Before You Start

Run your finger across the glass. If you feel roughness or gritty resistance, there are mineral deposits present that need chemical treatment before standard cleaning. Attempting to scrub or squeegee over mineral deposits drags them across the glass, causing scratches. Treat first, clean second.

Step 2 — Pre-Rinse with Purified Water

Pre-rinse to remove loose debris. Use purified or distilled water if possible — tap water just deposits more minerals. A garden hose on a gentle setting works for the pre-rinse; avoid pressure settings.

Step 3 — Apply Solution and Allow Dwell Time

Apply a pH-neutral, ammonia-free cleaning solution with a soft applicator — not a brush with stiff bristles. Let the solution sit on the glass for 30–60 seconds. This contact time is what breaks down salt and organic film. Don’t let it dry on the glass — work in shade or during cooler morning hours.

Step 4 — Squeegee or Rinse with Purified Water

For ground-floor windows, squeegee from top to bottom in overlapping strokes, wiping the blade between passes. For upper windows, a water-fed pole rinsing with deionized water is the professional method — allow to air dry without wiping. Tap water rinses will leave spots.