CURTAIN WALL STRUCTURE

PROBLEM TO BE SOLVED: To provide a curtain wall structure which facilitates the management of a fire-resistive covering spraying range in a mullion section of a curtain wall.SOLUTION: This curtain wall structure is used to provide rock wool in the mullion section 10 of the curtain wall 1. Holding members 30 elongated indoors are formed on both the width-direction end sides of the mullion section 10 of the curtain wall 1, respectively. Since the structure can restrain the scattering of the rock wool to the outside with respect to the holding members 30 by spraying the rock wool toward a section between the holding members 30, a range for spraying the rock wool 20 on the holding member 30 can be easily managed.