Hi all. Just wondered if there is a knack for cleaning inside of conservatory roofs? I did my first one today. It was an absolute scorching day so the solution dried up by time i came to blade it so left smears. I tried damp clothing them scrimming it which just left those horrible shiny smears. Eventually, i just used some detergent spray and microfibre cloth; this seemed to work best, but im dissapointed with the oberall result. Have i done somethong wrong?