What material can I use in place of vinyl chair strapping?
I have purchased 1” wide rolls of nylon strap. I think it is rated at 500 lb., so it would be plenty strong enough and work similar to our chairs.
The only caveat is the nylon stays wet for a day or so after a rain (a big deal in Oregon) if you have cushions it may not be a problem. I am thinking about painting the straps so the paint will seal the webbing but it is very strong.