Cookie Cutter Layout With Foam Sub-Roadbed?

Model Railroader Layouts and layout building
1

I’m building an HO layout. It has L girder benchwork. For the most part it will be 1/2" plywood with 1" pink foam glued on top. Most of the layout will be flat but there are a few areas where the track will be elevated. I want to use the cookie cutter method in these areas.

My question is: Do I just cut the foam to the same shape I cut the plywood, glue it down and support the elevated area in the normal L girder fashion (wooden support beams)? Or should I be using something else for sub-roadbed on the elevated areas?

Thanks,

Bill

2

Why use foam at all on the elevated sections? Just lay the road bed on the plywood and use foam for scenery in the open areas.

3

Art,

Are you saying glue the cork roadbed directly to the plywood with nothing in between?

Bill

4

Bill, That’s what I did. I am interested in what some other people might ad to this. Foam makes great mountains. It makes a great table top instead of plywood, especially if weight is an issue.