Low speed rotary machine, wet vac and mop and bucket required!
Miracle Heavy Duty Acidic Cleaner.
Rinse thoroughly
Dry
Seal with Miracle 511 Seal & Enhance
If it were us it would take around 1-2 hours to clean and dry and then around 20 minutes to seal. We would probably be in and out in under 3 hours. If it were local to me 10 quid M2. Sorry in USA no sterling symbols on keyboard
Kev