i have a set of rustwall IRC Mythos XC that looked liked it had a bit of solvent had gotten on the sidewalls. it dissolved some of the rubber compound holding the weave together so i applied several light coats of clear Plasti Dip on to bond it back together. i had tried some flexible adhesive prior but that just peeled/rubbed off with my fingers when dried. but this Plasti Dip seems to be holding up.
As mentioned previously when this topic arose, I use Aquasure to weatherproof the sidewalls of my cyclocross tubs, it's a urethane repair adhesive that I believe was originally to repair waterproof fabrics like wetsuits. As recommended by the daddy of tubular tyre makers