Professional window cleaning isn't one technique — the right method depends on height, access, and what's actually on the glass. Here's how the main methods compare on commercial buildings.
Traditional Squeegee Work
Mop and squeegee remains the standard for ground-level and interior glass — storefronts, lobbies, office partitions. In skilled hands it's fast, streak-free, and lets the technician detail edges, sills, and frames as they go. For interior work it's effectively the only method, since everything else involves water volume interiors can't take.
Water-Fed Pole Systems
Purified-water poles clean exterior glass up to several stories from the ground — no ladders on the facade, no lift rental for mid-rise work. Because purified water dries without minerals, it leaves no spots, and it rinses frames and sills as part of the pass. For two-to-five-story exteriors, it's usually the safest and most cost-effective method available.
Restoration: When Cleaning Isn't Enough
Hard-water staining, oxidation film, and construction residue (mortar, stucco, overspray) don't respond to standard cleaning. These need restoration work — specialty chemicals and careful scraping — and this is where post-construction glass differs sharply from maintenance glass. It's also where inexperienced crews scratch tempered glass; fabricating debris on cheap tempered panes demands technique, not force.
Matching Method to Building
A typical commercial scope mixes methods: squeegee inside and at grade, water-fed pole on the upper exterior, restoration only where glass needs it. That's how we quote window cleaning — by method and surface after seeing the building, not a blanket per-pane price. Free estimates, as always.
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