To solve a problem in a conventional integrated roof body used for a simple building such as a carport wherein installation tends to be difficult due to the shape of land and a surrounding environment.

The roof body 3 includes a plurality of panel units PU arranged in one direction. Each panel unit PU is formed in rectangular shape, and at least one panel unit PU has a short length in a direction to intersect the arranged direction of the panel units PU. The form can thereby be set freely according to the shape of land and the surrounding environment to attain an increase in variation.