@Dave A posted:My tables have homasote (as a sound deadening material) on the top of them, so there really is not an issue with noise.
I also have the homasote. A combination of that and the foam roadbed has made a drastic noise difference. I sure do wish I did something like this on my first layout which was screwed right into the plywood benchwork. I only have postwar conventional so it can get just a tad bit noisy.