When do you put the stones in?

All concrete has aggregate in it.

Can the slab be heated?

Yes, any slab can be heated. With in-slab hydronic heating on a polished concrete you will never live on a better floor.

My friend told me that concrete floors crack?

Is polished concrete expensive?

How does the process differ from having tiled, carpeted, or timber floors?

In a new build polished concrete floors are completed at the plaster stage before any skirts, cabinetry and joinery is installed.

How long does it take to polish a concrete slab?

We are opening a cafe. The building we have purchased has lino glued to the floor. We are thinking of removing the lino and going for a polished concrete sort of industrial look. What would you suggest and how long after you have finished can we start?

Depending on the condition of the slab underneath, the size of the restaurant and the desired finish, this can all happen pretty quickly.

What is the difference between grind and seal and machine polished concrete?

The grind and seal process is very similar to how wooden floor boards are finished. i.e. grind/sand to a smooth finish and then paint with a sealer. Where a timber floor is sanded and then sealed, a concrete floor is ground smooth with specialist grinding machinery.