Who wants to se the FAA requirements regarding flammability which is actually the only requirement link is:
http://ecfr.gpoaccess.gov/cgi/t/text...11.7.201.34.20
or you can look for FAR part 25.851 - 25.869 for more explanation and test procedures.
That does not gives you the overall time how the whole structure will last but at least it gives you some intro in requirements.
Cheers