| 摘要 |
PROBLEM TO BE SOLVED: To prevent a screw cover material, which covers a head of a lockscrew for attaching a window shutter to an exterior wall of a building, from coming off early in case of fire.SOLUTION: A screw cover material 30 includes: an attachment part 41 that is attached by being fixed to an exterior wall 8 of a building by a screw 60; a covering part 42 that covers a head 23a of a lockscrew 23; a cover 40 that has a watertight material attachment part 43; and a watertight material 50 that is attached to the watertight material attachment part 43. Since the attachment part 41 is attached by being fixed by the screw 60 different from the lockscrew 23, the screw cover material is prevented from coming off early in case of fire. |
