To attach a wooden glazing bar from above a connection fitting by providing the insertion hole of an attaching tool such as a nail used at the time when the other member is attached to the surface of the connection fitting stretched and fixed on the end face of adjacent roof panels.

A plate-connection fitting 3 is stretched to the end face of adjacent roof panels 1, 2, a nail 33 is inserted in the attaching hole of a small diameter to be driven, and the roof rafters 12, 22 of the panels 1, 2 are connected. A circular insertion hole 32 of a large diameter is provided in addition to the attaching hole of the small diameter on the plate-like connection fitting 3, a nail 41 is driven from the surface of a wooden glazing bar 4, driven into the roof rafters 12, 22 by inserting the nail 41 into the insertion hole 32, and the wooden glazing bar 4 is attached to the roof rafters 12, 22 from the plate- like fitting 3. Since the wooden glazing bar 4 can be attached from the plate-like connection fitting 3, a decorative material 5 can be attached to the wooden glazing bar 4.