To enable all kinds of roofing materials, etc., to be mounted without making chips, cuttings, etc., drop indoors at the execution of work in the case of repair of a batten-seam roof.

A metal fitting 1 is disposed in such a manner as to straddle the ridge part 55 of the batten-seam roof 50. The interval between leg parts 7 and 19 is shortened while fastening a bolt 3 to lengthen the interval between side walls 6 and 18 shortening, the hollow part 55a of the ridge part 55 is sandwiched for fixing between sandwiching surface parts 12 and 20, bolts 23 are driven into bolt holes 13 and 21, respectively, the surfaces part 12 and 20 and the hollow part 55a are fixed together, and a purlin material 25 is fixed to flanges 8, 8, etc. Consequently, the arrangement of a thermal insulating material-integrated roofing material 60, etc., on the purlin material 25 allows a roof repairing structure to be constructed.