Having spent a couple of days getting wet whilst trying to clean the
summer's accumulation of green/black algae/gunge/dirt from the concrete
patio slabs with a pressure hose, I'm sure there must be an easier way.

Apart from paying someone else to do it, is there either an easier or
more permanent way to achieve the "new whiteish-grey slab" look?

Does the use of a pressure hose take the surface off the slabs and
eventually damage them beyond use?

Thanks al

--
Roger T

RdotTONKINatZETNETdotCOdotUK