Top 5 Mistakes People Make When Choosing a Concrete Polishing Contractor in Sydney (And How to Avoid Them)

Polished concrete is one of those floors you only want to do once.

Done right, it’ll last decades with barely any maintenance.

Done wrong… well, fixing a bad polish is far more expensive than doing it properly the first time.

Unfortunately, in Sydney, many contractors claim they offer polished concrete when all they really do is a quick grind and seal. Others skip steps, use cheap sealers, or don’t bother with proper dust control — leaving clients disappointed and frustrated.

To help you avoid that headache, here are the top mistakes people make when choosing a concrete polishing contractor — and how to avoid them.

1. Choosing Based on Price Alone

We get it — quotes can vary a lot, and it's tempting to go with the cheapest one.But when it comes to polished concrete, a low price usually means:

• Fewer grinding steps (which = weaker, patchy finish)

• Corners and edges not finished properly

• Cheap sealer or densifier (also not enough sealer or densifier)

• Weak dust extraction (your house turns into a flour mill)

• Not cleaning up after the job

  
  

How to avoid it:

Always ask what’s actually included in the quote.

✔️ Number of grinding/polishing stages

✔️ Type of sealer (penetrating vs. topical)

✔️ If it’s not clearly broken down — be cautious.

2. Not Asking About the Process (Polished Concrete vs Grind & Seal Mix-Up)

One of the biggest misunderstandings is the difference between mechanically polished concrete (MPC) and grind & seal. Some contractors sell a grind & seal but call it polished concrete — which is misleading.

• MPC = Long-term solution (fully polished, hardened floor)

• Grind & Seal = Budget option (good, but not as durable)

How to avoid it:

Ask how many polishing/grinding steps are included and what products are used. If they get vague — walk away.

3. Ignoring Dust Control

Grinding concrete without proper extraction can be a health hazard and a mess. Fine silica dust spreads into cupboards, curtains, air vents — everywhere.

How to avoid it:

Make sure your contractor uses HEPA-grade dust extractors, not cheap vacuums.

4. Not Checking Past Work or Reviews

Polished concrete looks simple, but it’s easy to mess up:

• Swirl marks

• Patchy gloss

• Corner/edges different colour

How to avoid it:

Request before & after photos, or better yet — see a finished project in person.

5. No Clear Warranty or Terms

Some contractors finish the job, get paid, and disappear.

How to avoid it:

Request written clarity on what is and isn’t covered — even a basic written agreement is better than none.

Bonus Tip: Confirm the Little Things

Before locking in your contractor, make sure you’ve asked:

✔️ Is 3-phase power available, or do they bring a generator?

✔️ Is rubbish and waste removal included in the quote?

Small oversights like this can lead to unexpected delays or extra charges.

Final Thoughts

The cheapest contractor rarely delivers the best floor.

A proper mechanically polished concrete floor should last decades — so it’s worth choosing a team that explains the process clearly and cares about the details.

Want a Transparent Quote With No Surprises?

If you’re in Sydney and want clear pricing, dust-controlled machinery, and a proper polishing process — not a quick grind & seal job dressed up as polished concrete

— Ausgrind is happy to help.

📞 Contact us for an honest breakdown — no sales tricks, just solid floors.