Abstract: A repair flange comprising members of flat thin, preferably non-corrosive sheet material dimensioned so as to be flush mounted over a finished floor surface. The distinguishing features herein are that this repair flange is designed to fit around the necks under the attachment rim of various size closet flanges and has an opening offset from the usual circular opening wherein the inner edges of two flange members can be proximate one another, spaced a distance apart or standard. The flange members wherever their location fit closely around the neck of the closet flange and the repair flange body extends over the floor surface beyond the area encompassed by the rim of the closet flange so that attachment to the floor material can be made beyond the base of the closet flange. The addition of guide marks on the flange members facilitate the positioning of the flange members with respect to the closet flange.