with con roofs i like to earn money, so i price how i feel, take into account the customer where they live and then think how long will it take me, 2hours? ill say 60-70, because the worst thing you can do it rush, get tangled in the hose, fall off the ladder, or worse through the glass, so if you take it easy and price to do so, you can go wrong, if they seem a bit weary, and then add, ill wipe all the gutters and clean them out, only takes 5mins and looks great,
bottom line is, i dont earn any less that 30p/h on con roofs,
i find the best way to clean them is with the hi-flow brush from unger, stick that on the end of your pole, get a pump action spray bottle, put it some mega powerful hard surface cleaner, the sort that staines the glass if you leave it on too long and scrub away, and rinse