I am looking for a healthy floor covering for a concrete floor. I am converting a garage into an office.
I will have a work space for planning, and an area for starting plants to go out into the gardens. It's a farm office, and needs easy cleaning.
Most garages do not have a moisture barrier installed below the conrete. This will pose a problem for any type of adhered flooring system.
For the type of use you are proposing, I would recommend looking into polishing the existing concrete floor or applying an epoxy floor finish.
For more information:
Read "Is concrete flooring eco-friendly? What's the best way to finish it—stain, paint, polish?" a Q&A answered by Brad Hubbell.