Similar to wall system, There are many available roof system for your kit homes.
Choose the most suitable one but not the most expensive one, depends on your budget, local culture, climate conditions, building regulation requirements and your personal preferences.
I would personally recommend metal corrugated sheets for pacific island countries, and Asphalt shingles for US market.
Below are typical roof systems


Different projects would suit different finish, talk to us and figure out the most suitable one for your roof system.