Naked carbon questions

[glassman]

Hey all, i was wondering how long the carbon fiber on our roof's/deck lids/hoods hold up for with out the paint protecting it from the sun.

Are they clear coated and does that filter out the damaging u.v. rays?

I have two carbon road bikes, one entry level and one high end and the manufactors tell me they do have a life expectancy (although i know they are using it for aircraft so it must hold up)

Any thoughts/problems?

thanx, Mike