Three things go on the ticket when you rent a concrete grinder: the machine, the diamond tooling and the vacuum, and the day only works if all three suit each other. A walk behind with its extractor comes to roughly $160 to $270 a day, with tooling billed separately. Choose by the doorway and the power supply before you choose by the rate.
The doorway and the breaker pick the machine
Hand held grinders and small single disc machines run on an ordinary household circuit and go anywhere. From about ten inches upward you are into 230 volt single phase, and the large planetary machines usually want three phase. Measure the narrowest opening on the route and find out what the building can supply first.
Tooling is chosen at the counter and billed on wear
Diamonds are matched to the slab and to the coating on it, and the bond rule catches people out: harder concrete takes a softer bond. Metal segments strip and level, resin pads refine. Sets are charged per set or on measured wear when the machine comes back, so say what is on the floor and what you want left behind.
The vacuum goes out on the same ticket
Grinding cured concrete releases respirable crystalline silica, and the federal construction rule pairs these machines with a shroud feeding a dust collector sized to the tool and fitted with a filter cleaning mechanism. Hire that extractor from the same counter as the grinder so the hose, shroud and cyclone actually mate. A shop vacuum is not a substitute.
What a weekend really costs
Take a day rate near $100 to $180 for the machine, $60 to $120 for the extractor, and a set of diamonds, then decide how many passes the floor needs. One pass over a garage is an afternoon; lifting an old coating is two or three passes. A weekend rate is commonly charged as a day and a half.
Questions people ask about rent concrete grinder
Can I rent a concrete grinder for one day?
Yes, and it is the usual hire at a general rental counter. Be realistic about passes, though. Most first timers book one day for a floor that needs two, and returning late costs more than the second day would have.
Will a concrete grinder remove epoxy or glue?
It will, with the right tooling. Coatings and mastic want aggressive metal segments, and a soft adhesive can load up fine diamonds and stop cutting altogether. Tell the counter what the coating is, because the wrong set turns a one day job into a wasted one.
Do I need water with a concrete grinder?
Most rental grinding indoors is done dry with vacuum extraction, because wet slurry has to be contained and cleared. Wet grinding is used with some machines and tooling, and it does control dust, but it creates a mess that then has to be squeegeed and disposed of.