Roofing, Gutters and Waterproofing - Non-flamable Tiki Bar Roofing Material???

I'm currently building a deck on the back of my home where I'd like to incorporate a tiki bar, but I'm not sure exactly what type of roofing material to use. My problem is that I have a fire pit about 40' from where I'd like to build the tiki bar and I'm worried that flying ash/debris from the fire may land on a traditional dead palm roof and catch fire.

Are there any non-flamable synthetic palm branches available or does anyone have any ideas for this project?

Also, the fire pit is not moveable. I can explain if necessary...

To my knolege there are no flame resistant materials as you discribe. As a firefighter of 23 years, I eventually see the mistakes people make using the wrong materials in a building project. Your best bet would be to use a metal roof. I think you'll find it looks just as good and will not burn.

I wish you luck with your project.

To add an opinion...
Those "traditional" tiki bars were inspired more by movies, resorts and hotels. The real beachfront bars on isolated islands I've been to, were normally old rusting gavanized sheeting. Many times it came from old government buildings and such left from WWII.

Bamboo might be an option..the larger diameter stuff I mean. When dried it would be more resistant to ash or sparks than dried palm fronds at least. Metal would still be a better choice..