Can your rubber flooring be laid over hardwood flooring? And is there a way to secure it without using carpet tape? I would be hesitant to use double-sided tape on the hardwood that is currently in the room.

You can install our 8mm Pre Cut Rubber Rolls over hardwood flooring. Installing our rubber flooring over hardwood will not stain it. If you are concerned it will, we recommend placing a plastic sheet under the rubber flooring. These rubber rolls are pretty heavy, so for most installations, no tape or glue is necessary.