I am seeking input on roadbed or trackbed.I went to woodland scenics web site and found that they carry trackbed.Atlas carrys roadbed,and there is sevsral other methods about roadbed.Any input is very helpful.Thank You.Your Railroad Friend Randel B.
I personally have used the Woodland Scenics Trackbed. I found it very easy use. It cuts very easily (duh, it’s foam), manipulates easily around curves, and is very quiet. I simply glued mine down using Titebond wood glue and held it in place with push pins until the glue dried.
A buddy of mine recently finished his layout using cork roadbed. He complained that the cork was pretty messy to work with and also had to be sanded down a tad afterwards, mainly just to knock the edges off. I noticed quite a difference in how much noisier his layout is compared to mine.
Just my opinion 
I’m using Woodland Scenics trackbed on my N Scale layout. Also I use Woodlands track glue to glue the track to the roadbed. Even after balasting the track, the roadbed is still flexible. So any slight movement of a wood base doesn’t affect the track.
have fun
Sandro
www.sschaer.com