DOUBLE FLOOR STRUCTURE FOR FLOOR PRECEDING METHOD

PROBLEM TO BE SOLVED: To prevent a floor creak phenomenon, and to surely fix a floor runner etc. of a partition wall to a sub-floor board along a joint of the sub-floor board while avoiding the joint. SOLUTION: In this double floor structure (S) for a floor preceding method, a corner portion or an edge of the sub-floor board (3) is supported by an upper supporting plate (14) of a supporting leg (1) which is disposed on a concrete floor slab (C); a board buffer material (4) is fixed onto the sub-floor board; and a floor finishing material (5) is further fixed onto the board buffer material. The sub-floor board and the board buffer material, which have substantially the same board width and substantially the same board length, form an integral composite board (7) by being integrally superposed in the state of being aligned with the same upper and lower positions so as to form the joints (6) in positions substantially flush with each other. COPYRIGHT: (C)2009,JPO&INPIT