Heat tape is making my fingers tingle. Question!

[Inknsteel]

I am sure a high temp version makes a huge difference over the off-the-shelf stuff.

Blue painters tape, that is intriguing. I wonder if it dries up and cracks over time?

I had some on a homemade rack I used for about 4 years that I sold to a buddy of mine a couple months ago. All of the painters tape was still in good condition when I removed the heat tape. I was running individual 12" sections of 11" flexwatt on each shelf. I used the painters tape to go around the entire perimeter of the tape. On my newer racks, I have 6 foot sections of 4" tape weaving between the shelves. I run a strip down the entire length of each side. Those racks have been running for close to a year and I have no issues with the tape.