To provide a method of easily, speedily, and accurately mounting and dismounting a surface wood and a joint bar on a mold form without damaging the surface wood and the joint bar and using the surface wood and the joint bar repeatedly.

The surface wood and the joint bar formed by integrating the surface wood and a joint bar body with an ear part having a projected part formed thereon over the entire length of the upper end parts of the ear parts of the surface wood and the joint bar on the sides in contact with the mold form to pressure-contact the surface wood and the joint bar strongly to the mold form is mounted on the mold form with separate nails formed of hammering parts/connection parts, and mounting parts.