On fabrics, like codura...or canvas, denim, etc., we used to use a heavy coat of starch or scotch guard. Outdated and ineffective I’m sure. And surely not permanent.
Seems like there might be some kind of rubbery spray film, like on the inside of a backpack..pre-goretex.

But similar to tdbob, when I’ve worn out goretex I don’t think there was any resealing it as it was stretched ti the point of developing holes in the membrane.

Last edited by DollarShort; 08/17/18.