Did a one of windows and conservatory clean yesterday. Lady of the house followed from window to window face right to the glass looking for faults. When I started on the conservatory roof, I had to move kids toys out of the way. She came out with antibacterial wipes and cleaned all toys I had touched. Finally went around cony when done with snow white towel, wiping and checking the frames. Thought i did awesome job as despite her looking she found nothing to complain about. Got call this morning to say roof is still dirty. Went out to look it over. It's a self cleaning roof. Lol. Got ladder off couldn't see any problems. she said it's realy visible from inside. what she is seeing is dirt from inside reflecting of tint on roof. After her performance on the outside I told her I'm now fully booked for the year so couldn't possibly do inside.