Window cleaning questions, answered

That is almost always mineral etching from sprinkler overspray, not dirt. Las Vegas irrigation water is extremely hard, and when it dries on glass repeatedly it bonds and eventually etches into the surface. Washing will not touch it — it needs an acid treatment, and severe cases may only improve rather than fully clear.

Per pane, with different rates for exterior-only and inside-and-out. Counting panes is something you can do without measuring, which is what makes the lane quotable without a walkthrough.

Yes, to reach the glass at all. They are removed, the glass is cleaned, the screens are cleaned, and they go back where they came from. It is standard on essentially every Las Vegas job and it is built into the rate rather than added as a surprise.

Two to three times a year for most homes, driven by dust rather than rain. Where sprinklers hit the glass, more often — the sooner overspray comes off, the less chance it has to bond and etch permanently.

Not as an instant booking yet. This lane is quoted by request while the equipment comes online. Ask and you get a firm number; the scheduling depends on availability.