I saw a technique for fastening track to roadbed using silicone in multiple places, including the Model Railroader Magazine website.  I decided to try this, partly because I could not find any track nails.  Since my major purpose in building this module is to try various techniques, I decided this would be a perfect opportunity.

I used blue painter’s tape to mask the area under each switch so that it would move freely.  Before I added the silicone I drilled a hole down through the roadbed and the plywood in case I decide to install a switch machine at a later date.  After masking it off I spread the silicone over the track bed.

I started with the switches as I will be using flex track for the straight sections.  To keep the track in place while the silicone set I used pins.  I found that using silicone to fasten the track in place was quite a bit slower than using track nails.  Another important thing I discovered was the importance of keeping the layer of silicone very thin, as a thick layer would squeeze up through the ties.