Cheers Ed,
I wanted to pressure wash, they don't want the mess or outlay. The main issue is that someone, was just spraying and leaving the flags which sped up the process, thus becoming cheaper, I guess!
This was done at several sites I do the windows, though I have argued that he pressure washed as well, there adamant he didn't!
I had a go at my Indian stone flags Saturday and has improved them, but not as good as pressure washing.
Thing is I'll get paid regardless of the outcome, but would have liked it to look great when finished.
Doesn't help when they aren't sure what he was using!