on first cleans.... you can always squeegy off the pure water from the glass on the downstairs...it will only take a few minutes, but at least yiu know the custy will be happy i dont mind spending a lot longer on first cleans as i know once i,ve got rid of all the hidden dirt , the next and subsequent cleans will be much quicker i try to keep my first cleans for a friday afternoon after i,v earnt my money...
First TFR everything without letting it dry. Second WFP frames, glass and rinse, Third WFP everything again and rinse. No problems and blow the customer away. Complete transformation, brilliant white pvc, no residual dirt to worry about.Takes time, but you are in it for the repeat business.Chris