Quote from: DougInCal on February 01, 2015, 12:50:25 AM
Very interesting and informative thread. MrMoose, I am very new and beginning to RR modeling. Would explain what this "foam" is and where you found it.
It is what Guslcp said, insulating board the thickness you use is your choice most use either 1" or 2" depending on how deep you would want to cut sub terrain into it. Like streams, gullies, lakes, rivers, culverts, etc,etc. and pink is the most preferred insulation board to use.