How long does the process take? Polish concrete for an existing concrete bathroom floor 5.73m2

Thanks for your question. There are quite a few variables here and without more detailed information we can only provide you with a fairly general answer.

We have a garage with a maroon type colour concrete floor. It has a few paint stains etc on it. I was thinking of giving it a good sanding, with some type of machine no doubt & then painting some kind of clear sealer on it. Can any concrete floor be sande

Yes, any concrete floor can be ground and sealed or mechanically polished.

Are concrete floors cold? Do we need to heat them?

Depending on where you live in the country, particularly in southern states heating would probably be preferred and radiates a lovely warmth. In warmer states and in summer down in the southern states nothing is cooler.

Why are polished concrete floors popular today?

Polished Concrete floors have become very popular because they are a durable, scratch resistant, low maintenance and easy to clean.

What does exposure mean?

Exposure is the amount of aggregate (rock, quartz, pebble etc) that is able to be seen as a result of the grinding process.

What about aggregates in concrete mix? What is generally available and what is recommended?

Is it possible to stain and polish concrete? (dark grey)

Yes. It is possible but the process can be expensive as far as the cost of the stain is concerned and the area of the slab.

What do you recommend not to use for cleaning a concrete floor?