What is pure-water window cleaning?

By Shiny Fox Window Cleaning · Anstey, Leicester · Updated July 2026

Pure-water cleaning is the method almost every professional round uses now: purified water, fed up a telescopic pole to a soft brush, scrubbing and rinsing your glass from the ground. No soap, no ladders — and the water dries spotless.

How it works

1. Purify: tap water is passed through filters (reverse osmosis and deionisation) that strip out every dissolved mineral — the stuff that dries into white spots.
2. Scrub: the brush loosens dirt on the glass, frames and sills while pure water flushes it away.
3. Rinse and walk away: the final rinse is left to dry naturally. Because the water is 100% pure, it evaporates leaving nothing behind — no spots, no streaks, no film.

Why no soap is a feature, not a shortcut

Detergent leaves a microscopic sticky film on glass. It looks fine on day one, then grabs dust and pollution all month. Pure water leaves nothing on the surface, so windows stay cleaner for longer — and each subsequent clean is quicker.

Why rain doesn't ruin a pure-water clean

Streaks after rain come from residue being disturbed — soap film or mineral deposits re-wetting and running. On residue-free glass, light rain simply dries clear. That's why a pure-water round carries on through drizzle with no drop in results.

The safety bonus

Water-fed poles reach third-storey windows from the ground. No ladders leaning on your gutters or frames, no one climbing over your conservatory — which is also why insurers and health-and-safety rules (Working at Height Regulations 2005) favour it.