Hope everybody had a good weekend.
I was not around to reply or defend my approx. quote of 2 hours.
I was never suggesting I clean all conny roofs in 30 mins.
I've cleaned roofs in the past caked in bird mess and moss with green upvc frames and I agree they are hard work and take far longer.
I was only estimating on how long I thought this one would take me from what I could see in the photo.
What I could see was :
good all round access
a well kept and maintained modern property
no evidence of heavily soiled windows or frames e.g. algae, moss, lichen etc.
A couple of posters here seem to think my workmanship would be sub standard in some way to their own .
I never leave a job until I am happy that its clean .
Maybe I have been a little optimistic in 2 hours but not far off the mark considering other jobs I do very similar to that.
And as Sean K has pointed out I have not under priced as have allowed extra time in the cost for any problems that "may" arise or take me longer.