this did a great job my frist use on my composite decking on a 12x50 deck then I did all my concrete 7 car carport areaI did use hot water from my tankless hot water heater made a big difference on cleaningthis moves very easy and does a great job only thing here I see could be a problem in the center bearing lets hope it last a long time other then that its all stainless and aluminum brassgood buy