My freelance ho scale layout I am building

[train_guy]

Thanks for the tip on the foam,I was online last night on the Lowe's website and was looking at the "white" foam insulation,of coarse i always go for the least expensive stuff first,but now that i have your input,now i know to stay away from the white foam.I never would have known that and end up buying 8 sheets of 4x8 that would have been useless to me...Thanks guys!