PURPOSE: To construct with ease on a construction site and waterproofing certainly.

CONSTITUTION: This structure comprises a wall panel main body 30, an exterior facing material 1 installed on this wall panel main body 30 and a furring strip 4 installed near the end of the same wall panel main body 30 between the exterior facing material 1 and the wall panel main body 30, thereby forming a wall panel 40. The furring strip 40 is recessed from the end of the wall panel 40, thereby forming a recessed part 17. The ends of the wall panels 40 are laid out so that they face each other where a clearance is formed between each of the exterior facing materials 1. A cross section-projected joint material is interposed between the ends of the wall panels 40 so that each projected part of the cross section-projected joint material 10 may be fitted in the recessed part 17 on both sides of the clearance 11.