Rob,
After building many FasTrack layouts on 3/4 Ply, I recommend purchasing the acoustical square ceiling tile for a layout like you are building. The acoustical ceiling tile comes in squares that fit together at the edges, cut them where required. If you like the white color of the tile use it as snow, screw the edges and the corners of the tile to the 3/4 Ply. When screwing the FasTrack to the acoustical ceiling tile use screws that do not go all the way thru, to the 3/4 Ply, for best sound deadening. At one time I even put a piece of Green inside/outside grass type Carpet over the acoustical ceiling tile, and then placed the FasTrack on top of it, this eliminates most all the track sound however. This is just the way I engineered with FasTrack for many years, even my multi level layouts were built in this manner. There are numerous other ways that I tried down thru the years, IMO this one works the very best.
Good luck and have fun with your layout building.
PCRR/Dave
Construction continues on the New PCRR Train Room.
