Re: anyone have any experiance with sign vinyl on wood The sun is not the problem, it's the adhesive. It's just meant to grip certain things, if the right conditions don't exist it will just fall off.
I know that 3M sells a vinyl for digital printing that will adhere to just about anything (including a brick wall) by use of a heat gun, but it's not going to available in reflective colours. Forgot what it's called.
If you're serious about this I would call your vinyl supplier and ask them to send you some samples, test them out on the wood for a month or two and see what happens. |