I worked for most of the window cleaners in the North West gaining knowledge from them, I learned that they were not doing the job properly. They damaged peoples properties, they overcharged people and overall they did not have a clue what they were doing, it was a joke. I cannot believe that people are actually allowing these cowboys to clean their windows and conservatories, scratching them and leaving hard or impossible to remove black marks on their UPVC. They use harsh chemicals which bleach the UPVC and rot the seals. Its a total mess, the window cleaners use cheap equipment, if done, by so called the traditional method (does not clean just moves the dirt about) with a rag, bucket and squeegee then their equipment costs less than £20, a total joke, when our equipment cost over £20,000 and they charge the same, so now you can see the difference, and I cannot believe you are employing these cowboys destroying your glass and frames. I used to work for them so I know, I was to ashamed of charging the customers, so I had to leave the job, that is why I started my own window cleaning business because I do it 100% perfect with no damage and if required I restore the frames back to new.