3 hrs !!!!!!!!!! did you clean it with a tooth brush?
i must be lucky because i have never come across a conservatory roof that took so long to clean
I've cleaned hundreds of conservatories, and not come across one like this...in fact, a toothbrush would have been a choice tool to clean it the muck was that thick and solid, as i said, it was like baked on bird s**t!!!
I usually finish a conservatory (top to bottom) in 1 1/2 - 2 hrs, whether i have to use a roof ladder or not.
You can get a much better brush for rippin through the muck on con roofs and stuff than the standard window one. Vikan do a much harder bristle one which would eat that stuff on that roof wayyyy fatster than the one n the pic. 30 secs to change brush.
Do yu know which brush this is, would like to be prepared if i ever get another one like this .