Originally Posted by Ferretchaser
If they had used Tenara, they would not have degraded like that in just 4 years. My guess is that they used the bog standard V92 polyester thread, as that is what is usually used for sail and canvas repairs and they did not want to bother setting the machine up for Tenara for your repair.
Just mt two cents worth.
I tend to agree. Tenara is the same teflon that is used to coat top of the line house siding, and that's guaranteed to last 25 years.
Difficult to sew however, but I'm sure you can Google Tenara and get information on how to sew.