Quick Answer

A typical polished concrete floor takes 3-7 days for 1000 square metres with a two-person crew and one planetary grinder. Grinding alone is 30-50 square metres per hour on the coarse grits, slowing to 20-30 on the fine resin steps.

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Production Rates by Grit

• Coarse metal (16#-30/40#): 30-50 m2/h
• Mid metal (60/80#-100/120#): 25-40 m2/h
• Resin polishing (200#-800#): 20-35 m2/h
• Fine polish and burnish (1500#-3000#): 15-25 m2/h

What Changes the Time

• Floor condition: coatings, cracks and lippage add days
• Concrete hardness: hard concrete slows every pass
• Machine: bigger planetary machines cut more per hour
• Edge work: corners double the time on smaller floors

Realistic Job Timeline

1. Day 1-2: assessment, coating removal, coarse grinding
2. Day 2-3: mid grits and densifier
3. Day 3-4: resin polishing steps
4. Day 4-5: fine polish, burnish, protection and cleanup

Frequently Asked Questions

Q: Can one day be enough?

A>Only for small areas or a light re-polish of an existing floor, not a full grind on rough concrete.

Q: How much does crew size help?

A>Adding a second grinder roughly halves grinding time but not edge work or curing waits.

Q: Does the densifier cure time slow the job?

A>Yes - plan for a few hours to overnight after densifying.

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Conclusion

Estimate from square metres per hour, add buffer for condition and edges, and schedule curing waits. A realistic timeline keeps the crew calm and the client informed.