Lenie - Carpet Tile is the easiest system to handle and install and will lay flat without wrinkling issues. You should be able to apply a tape boarder with Gaffers Tape. If you haven't used Gaffers tape before it will spoil for numerous applications you would have used traditional duct tape. I use it more than duct tape around the shop.
http://www.amazon.com/Allstar-Perfor...3ZW0TBN28VECGP
It also comes in a wide range of colors.
It's required by most convention facilities because of it's release characteristics - it doesn't remove wax or stain applied concrete sealer/wax finishes.