K.H.
I would suggest that you call sunscreen companies. We used SunScreens by Mark Castle and he mentioned that he could cover patios. He did a great job on our window screens. He is valleywide and has a website. ###-###-#### www.sunscreensbymark.com He is a nice guy and is very willing to talk to you about what you would like. Good luck! K. H. Peoria, AZ