12-17-2010, 11:41 AM
It is one section of flex track. I did leave gaps but they must not have been big enough. It was around 65 degrees when the track was put down, but I'm guessing the room got up to 78 (temps in fahrenheit) or so when they buckled. The room the layout is in, tends to be the warmest room in the house and gets hotter when trying to heat the rest of the house in the winter. I will be leaving a bit more of a gap in the rails this time around.
John