Old flex watt heat tape

[akaangela]

Does this stuff get old and ware out? I have some on a metal rack that I got and some spots seem hot and some seem cold. I am having a heck of a time getting my temps stable. If I replace it should I replace my rack as well? I don't have a lot of money to put into a rack but I would like something that holds heat well and I can keep a stable temp. I am using 2 herp stat pros and each shelf has it own temp sensor.

[Crazy4Herps]

Though I've never experienced flexwatt wearing out, I'm sure it happens after the course of several years. It sounds like you've got a good set-up, and flexwatt is cheap. I shouldn't think you will need to replace the rack unless there's something wrong with it.