Jeff Burke wrote:
How well does Tyvek hold up when used to for sail making?

When it does fail do you think it's because of UV light or stress?

Thanks.

Sorry I don't know it's longevity but it should wear out before it
fails. It would just fail if it were not reparied or replaced in time.

I've made one small sail www.ncf.ca/~ag384/TyvekSail.htm with unusual
features. I haven't put many hours on it but for a cheap sail it seems
okay.