your right mav,i did block paved entry and patio with turbo nozzle only and am thinking of just using fsc for flags in future,although i do reckon you get a more even clean with fsc over top of block,ihad to go over a few green stripes when block had dried,these wouldn`t have been left if i had swooped over it with fsc,i might just fligh across it with fsc then blitz it with turbo,i have just had another turbo delivered as i`d hate to lose the one i have,brilliant.dan