Window cleaning has changed considerably over the last couple of decades, with pure water systems on extendable poles largely replacing the traditional ladder-and-squeegee approach for most residential work. It's safer, reaches higher without ladders, and, done properly, leaves windows genuinely spotless without the streaking that traditional methods could leave behind on a windy day.
This guide covers how pure water window cleaning works, the difference between a regular round and a one-off clean, what commercial window cleaning involves, and what a quote depends on for both.
How does pure water window cleaning work?
Pure water systems filter tap water to remove minerals and impurities, producing water with an extremely low dissolved solids content. Applied to glass through a brush on an extendable pole, this pure water lifts dirt without leaving mineral deposits behind as it dries, which means no streaking and no need to hand-dry or squeegee the glass afterwards.
This method also reaches windows on upper storeys from the ground, removing the need for ladders on most two and three-storey domestic properties. It's particularly effective for conservatory roofs, skylights and awkward angles that would be genuinely difficult and risky to reach with a traditional ladder and squeegee approach.
Regular rounds versus one-off cleans
Most residential window cleaning in the UK runs as a regular round, typically every four to eight weeks, which keeps windows consistently clean and is usually priced lower per visit than a one-off clean because the contractor isn't dealing with heavy built-up grime each time. A one-off clean, for a house that hasn't had windows done in a while or ahead of a specific event, costs more per visit since it takes longer to bring the glass and frames back up to standard.
Frames and sills are usually included in a standard clean alongside the glass, since grime on uPVC frames is easy to miss but noticeably improves the overall look once addressed.
What affects the price of window cleaning
There is no fixed list of window cleaning prices, because two houses on the same street can be very different jobs. What a quote weighs up is the size of the property, how many windows and panes there are, and how easy they are to reach: clear access all the way round is quicker than sides blocked by extensions, fences or a conservatory the poles cannot get past. Upper-floor glass worked from the ground with a water-fed pole is generally quicker and safer than glass needing other arrangements.
Frequency matters too. Windows cleaned every four to eight weeks stay on top of the grime, so each visit is quick and the per-visit cost is lower than a one-off clean of glass that has been left a year or more. Frames and sills are washed alongside the glass as part of a proper clean, so houses with heavily soiled uPVC frames take a little longer. The honest way to get a figure is a quote based on your own property, rather than expecting a standard rate.
Commercial window cleaning considerations
Commercial properties often need more frequent cleaning than domestic rounds, particularly street-level shopfronts that pick up dirt and fingerprints quickly, and access requirements can be more complex with multi-storey buildings needing reach-and-wash systems rated for greater heights. Risk assessments and method statements are commonly expected for commercial work, alongside proof of insurance, which a professional contractor should be able to provide without being asked twice.
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