My question is when using Gorilla tape if you overlap at the valve hole by 100-150mm can you do it with only a single layer. ? ? ? ?
Your thoughts ...!!!
I've used Gorilla tape for tubeless in MTB applications--single layer. I use a very slight overlap (<100mm), along with a Stan's valve stem.
Of course, tire pressures are much lower so I am not sure if there is something about the higher pressure you use for a road application that would cause it to fail.
Seems to me that a seal is a seal, and a 2nd (or 3rd) layer of tape is just bonding to itself, not improving the bond with the rim.
Let us know what you experience. Good luck!