Evening all, I recently picked up a couple of new customers, I cleaned their windows with my reach and wash system , both houses I went to clean them again after the windows had dried dirty.
Question is why? I have tested my water almost once a week, and after new sediment and carbon filter, with a bottle of resin, the meter is giving a 000 once water is tested. This is after giving each frame an extra clean and rinse before I cleaned their windows. The first house was all upvc window frames, and I told customer to give me another ring if the windows dried dirty. The second had wooden frames but the paint was lifting on the window sills, the customer texted me to cancell the windows from now on,after I went back today, the patio doors were covered in spotting marks.
I recleaned their windows windows and rinse them several times but any reason why this is happening? I’ve ordered some new membrane filters to start with brand new ones.