To provide a roof trestle device easily installable and capable of eliminating such an inconvenience that fallen leaves and dirt are accumulated on a roof on which the roof trestle device is installed and a trestle tile.
This roof trestle device comprises a plurality of trestle tiles 1 roofed on a substrate together with the other tiles and having tile body parts 9 and arch parts 10 integrally formed on the upper surfaces of the tile body parts 9 to be extended to the lateral direction of the tile roof, a plurality of strut bolts 2 having base ends secured to the arch parts 10, a plurality of brackets 3 secured to the ends of the strut bolts 2, and a plurality of vertical rails 4 and lateral rails held across the brackets 3 and on which the roof installation members are mounted.