If you’ve got a concrete grinding job coming up, one of the first decisions you’ll face isn’t which grinder to use — it’s whether to hire one or buy one outright. Get it wrong and you’re either paying hire fees on every single job for years, or you’ve sunk thousands into a machine that sits in the shed most of the year.
At Con-Treat, we sell concrete grinding equipment and talk contractors and DIYers through concrete grinding projects every day — so we don’t have a horse in this race either way. Here’s how to work out which option actually makes sense for your situation.
What Does Concrete Grinder Hire Actually Cost?
Concrete grinder hire rates in Australia typically run from around $80–$150 a day for a small single-disc grinder, up to $300+ a day for a larger walk-behind or planetary grinder with dust extraction included. Multi-day and weekly rates usually bring the daily cost down, but it adds up fast once a job runs long or you need the machine again next month.
The other cost that catches people out is everything around the hire fee:
- Diamond tooling — often not included, and the wrong grit for your slab can blow out your time on-site
- Dust extraction hire, if it’s not bundled with the grinder
- Bond or damage waiver fees
- Delivery and pickup if you can’t collect and return yourself
- Fuel or power requirements depending on the machine
None of this makes hiring a bad option — it’s simply the full picture you need before comparing it to a purchase price.
When Hiring a Concrete Grinder Makes Sense
Hire is usually the smarter call when:
- It’s a one-off job. A single garage floor, a small patio repair, or a once-off prep before sealing doesn’t justify owning a machine you’ll use once a year.
- You’re still deciding on your equipment needs. If you’re new to concrete grinding, hiring a few different machines across projects teaches you what actually suits your work before you commit to buying.
- Storage and maintenance aren’t practical. Owning equipment means somewhere to store it, and someone responsible for servicing, cleaning, and replacing worn parts.
- Cash flow matters more than long-term cost. Hire spreads the cost across the job instead of tying up capital upfront.
When Buying Makes More Sense
Buying tends to work out ahead when:
- You’re running grinding jobs regularly. If you’re hiring a grinder more than a handful of times a year, the hire fees usually overtake the cost of owning one within 12–18 months.
- You need the machine on short notice. Hire centres run out of stock, especially in busy periods — owning your own means no job gets delayed waiting on availability.
- You want to build tooling knowledge over time. Owning your own machine means you get to know exactly which diamond tooling, grit, and bond works best for the concrete you deal with most, rather than relearning it on a different hire machine every time. See our guide to choosing the right grinding head for more on this.
- You’re expanding into new services. Tradies moving into epoxy or polished concrete work often find owning grinding equipment pays for itself quickly once epoxy flooring jobs are added to the books.
If you’re leaning toward buying, our beginner’s guide to concrete grinding equipment is a good next read — it covers the different grinder types before you commit to a purchase.
What to Check Before You Hire a Concrete Grinder
Whichever way you land, a few questions before you hire will save you a wasted trip. If you’re hiring through Con-Treat, our team will run through these with you over the phone before you book — but they’re worth knowing regardless of who you hire from:
- Is dust extraction included, or hired separately? Concrete dust contains crystalline silica, and proper dust control isn’t optional on Australian job sites — our guide to concrete dust control systems explains why.
- What diamond tooling comes with the machine, and is it suited to your slab? Hard concrete and soft concrete need different bonds — hire centres don’t always stock to your specific job.
- Is the grinder single-phase or three-phase? Three-phase machines need the right power connection on site, which isn’t always available on residential jobs.
- What’s the bond/damage waiver, and what does it actually cover?
- Can you extend the hire on short notice if the job runs over?
Buy or Hire — Con-Treat Covers Both
Whichever direction suits your project, Con-Treat can help. If you already know you want to buy, our Shark Grinder range is the place to start — from single-disc machines for small repairs through to planetary grinders for larger commercial floors.
If hiring makes more sense for your job, head to our equipment hire page to see what’s currently available — including Shark grinders, dust extractors, and dust separators — and give our team a call on 1300 044 625 to talk through your project. We’ll help you match the right machine and tooling to your slab before you book anything in.
Frequently Asked Questions
Is it cheaper to hire or buy a concrete grinder?
For a one-off job, hiring is almost always cheaper upfront. If you’re grinding concrete more than a few times a year, buying usually works out cheaper within 12–18 months once you factor in accumulated hire fees.
How much does it cost to hire a concrete grinder in Australia?
Expect roughly $80–$150 a day for a small single-disc grinder, and $200–$300+ a day for larger walk-behind or planetary machines, before tooling, dust extraction, and bond fees.
Do I need dust extraction with a concrete grinder?
Yes. Concrete grinding produces fine silica dust that’s a serious health hazard, and Australian WHS regulations require dust to be controlled on site. Always check whether extraction is included with a hire, or supplied with a purchased machine.
What size concrete grinder do I need?
It depends on the size and hardness of your slab. Small single-disc grinders suit garages and repairs; larger walk-behind or planetary grinders suit bigger commercial floors. Con-Treat’s team can help match a machine to your specific job.
