Stuart Firth
Confession time – most of my track is pcb, which has no opportunity to move about of course, and is glued to the cork with wood glue. Despite this it has survived happily for 25 years in lofts that experience temperatures from 0-46 degrees Centigrade. I put this down to the basic strength of pcb track and plenty of expansion gaps. Perhaps the gaps do become quite large when the temp is close to freezing but I’m not up there to see it… The only other track I have is some sidings made from Ratio track bases and these have been fine too.