Renovation fitting

Abstract

To provide a renovation fitting which attaches new frames to existing frames having metal parts and resin parts, and which can improve fire resistance.SOLUTION: A renovation fitting 1 is attached to an opening of a building structure 100, which includes: existing frames 21, 22, 23, and 24 that have metal parts 211, 221, 231, 241 and resin parts 212, 222, 232, 233, and 242; new frames 31, 32, 33, and 34 to be attached to the inner circumference of the existing frames 21, 22, 23, and 24; and heat foaming materials 711, 712, 713, 721, 722, 731, 732, 741, and 742 to be attached to the existing frames 21, 22, 23, and 24 so as to foam toward spaces between the existing frames 21, 22, 23, and 24 and the new frames 31, 32, 33, and 34.SELECTED DRAWING: Figure 4

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