I'd like to install rubber over PVC tiles in my garage gym. I will use it for a kickboxing bag. The mats wouldn't be installed floor-to-floor. How grippy is the rubber - would the mats furl/slip over the PVC tiles when I'm kickboxing? (Even if weighted with the boxing bag)?

You can install our Eco-Lock Rubber Tiles over an existing PVC Tile floor in a garage gym. The tiles will not slip around when being used if installed wall-to-wall. There is potential for tiles to move with certain lateral exercises if not installed wall-to-wall. In these instances, we recommend using some double-sided tape or glue to keep the tiles in place.