Felt Tape
This stuff is tough and thick, and the adhesive stuck extremely well to my ancient top rail hoops. I bought about 5 rolls of felt tape for my 10' x 20' arched greenhouse and hoped to have some left over, but found that this was BARELY enough to line the hoops and end wall components of my greenhouse. This isn't a knock against this product, however, I just found that I substantially underestimated the surface area of metal that would have been in contact with the plastic, so I recommend that you get an extra roll or two - you will almost certainly find a use for it.