PURPOSE: To obtain a favorable appearance and reduce production cost and enhance strength by integrally forming a decorative roof for a fenceboard with aluminum casting or a synthetic resin material to shape a gable roof ridge.

CONSTITUTION: A decorative roof 10 for a fence board is integrally formed to shape a gable roof ridge with aluminum casting or a synthetic resin material. It is shaped to have a ridge beam-shaped projection 11 at the top and tabular parts 11, 11 in the chevron shape at both sides. A wood grain pattern is formed on the upper face of the tabular parts 11, 11, and steps 11a, 11a for overlapping connection a little higher than the thickness of the tabular parts 11, 11 are formed at one end side of the tabular parts 11, 11. Further, fitting holes 11b, 11b,... are bored on the upper part of respective tabular parts 11 to fix the tubular parts to the block fence F1 with nails N, N.