I’m not too worried about locomotives and cars making too much noise on the layout as speeds will always be very modest. Still, I want some cork bed for the tracks, so I go with 1/32″ cork sheets from Midwest Products. For the areas between the tracks as well as the small section under the throw-bars of the turnouts, I’ll use 1/32″ basswood. Gaps between cork and basswood will be sealed with vinyl putty.
I’ll work myself around the freight house and then extend the cork and basswood layer to the freight yard with the team tracks. Starting at the bulkhead, I add track by track; first the cork, and then the basswood sheet to the next group of tracks, always sealing the gaps and sanding the seams. Cork and basswood get a good coating of dark gray primer before I can lay and glue down the flex track. Finally, the tracks and ties are airbrushed with a rusty brown. Soon, my layout displays the full extent of the freight yard. I only leave space for tracks 7 to 10 as they are part of the diamond crossover – one of the last challenges in my project.