@GG1 4877 posted:
The benefit to putting any sound dampening between your track and the sub-surface is negated by any mechanical fasteners as the sound will transfer through them. Just FYI if you don't already know that. Carpet tile will certainly work. I got a lot of remnant pieces from a carpet rep and used it on the floor of my train room. It did not need any adhesive as it is rubber backed. The question is how you would adhere your track to the carpet tile.
It is an interesting idea!
Hi GG1 4877, you had mentioned sound transfer with mechanical fasteners---I was wondering is that just metal fasteners or all fasteners----how about a small plastic ty-rap? Greg