Can We Clean Windows In The Rain?

Should my window cleaner be cleaning my windows in the rain? 

Well the answer is Yes… and No! 

Is Rain Water Pure Water?

Basically it is down to science and the methods used. We only use ultra-pure water to clean the windows and we also clean the frames each and every time. Rainwater is almost pure water and on its own won’t cause spotting on the windows and if it does then the dirt would have come from the frames. That’s not an issue with the water-fed pole method as the frames are cleaned at the same time. 


However, traditional window cleaners only use normal water with a detergent (washing up liquid) and they don’t clean the whole frame. This means when it rains the dirt from the top of the frame drips onto the clean glass causing spotting. 


Also because soap dries slightly sticky, it attracts dirt, and because the squeegee blade pushes the soap into rubber seals around the glass the dirt builds up there. The soap is also why traditional window cleaners usually repeat their customers every 2-4 weeks whereas pure water window cleaners tend to work on a 6-weekly schedule as the windows stay clean longer. 


We window cleaners carefully monitor the type of rain as sometimes it has sand from the Sahara in it and if that’s forecasted we tend not to clean as the rainwater is highly contaminated with solids. You may have noticed the state of your vehicles after a sandy downpour.

Your One Stop External Cleaning Service

The Extreme Clean Team are proud to offer our specialist exterior cleaning services. We invest in the best equipment, tools and techniques to provide you top-notch cleaning services your property deserves. We are based in Walton on Thames and serve Epsom, Surbiton, Leatherhead and other nearby areas in Surrey. Feel free to inquire or ask for a free quote using our online quoting tool or via Whatsapp!

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Richard Medhurst
November 11, 2023

Very efficient, did a good job

Jenny-Theresa Jones
November 11, 2023

Great value, good quality work and immensely reliable, would recommend in an instant.

Adam Sharif
November 4, 2023

Very good service, they turned up on time and did a great job of cleaning our windows and frames!