1st job yesterday on a bungalow, think i under priced it slightly as i didnt measure up. It took 2 of us 9-4.30 non stop, cleaned a block paved drive(roughly 50sqm and resand) stone patio (roughly 9sqm) small conservatory inside and out, all windows+ 2 small apexes and 2 lengths of soffit/facias, a bloody hard day 4 £200. All my gear worked great and 4 a 1st job it went well i definitly underestimated how messy it was though! The surface cleaner (running full bore 3600psi 15lpm) was good where the drive wasnt to bad but it didnt really touch the lichen/algae/black marks which i was a little disapointed with, and even spots in the middle of the stone slabs i had to lance, maybe im expecting to much! Could any1 give me some advice as to how they would clean a drive/patio start to finish e.g preperation weeding etc im not sure if i went the right way about everything!