Does a floor mat for a trainer truly serve specific purpose or can any old mat or none at all work okay?
Specifically, I'm wondering if a trainer specific mat has any sound dampening properties as I live in a 5th floor walkup and don't want to drive my downstairs neighbor crazy. I have hardwood floors and just started testing out a used trainer, didn't seem to have much trouble with it sliding since most of myweight is going straight into the floor but it definately was humming and shaking the floor
I don't have any downstairs neighbor experience. But, if you really want to isolate the trainer from the floor, I would use a plywood pad with foam underneath. With the load spread out, even cheap foam would work fine. Alternately, use a pair of boards with foam.
Aside from noise, to keep from marring the floor, some kind of pad is a good idea. I've used old magazines, for instance.