Southern Pacific Switching Layout

[FCIN]

Justin;

Check out the polyurethane foam and see if it's dense and solid feeling like the polystrene foams made by Dow and Owens. I'm thinking that the "rigid" polyurethane foam may also be more expensive. From what I can find out, the rigid polyurethane foam is used for applications other than an insulation material. As long as it's not like that beaded stuff and it doesn't cost you an arm and a leg it may be just fine.

The only polystrene foam available around here is in 1/2 and 3/4 inch thicknesses. The local building supply center here has started carrying the beaded stuff in 2 inch thicknesses with a thin foil layer on one side but when I was just looking at it you could see the beads popping off it! Slight exaggeration there, but I did notice that all the 4x8 sheets had chunks missing out of them. I put 1/2 foam on my bench work, but may add another layer of it when before I start to glue down the track. Low drainage ditches along some of the track and roads is about all I'm going to have anyway and 1/2 is okay for that. I'll build up some higher spots using spackling compound or something like that here and there.