I'm in the process of building a rack as well. Would it work to tape down the flexwatt (just in a couple of spots to hold it), and then a strip of aluminum flashing on top of the flexwatt? How would a person hold the flashing down? Would it work to use small screws -- or nails - to attach the flashing to the shelf? (I would use 6" wide flashing, and 4" heat tape -- so I wouldn't be screwing into the flexwatt! :colbert: )
Thanks for any input!