PURPOSE: To efficiently and safely repair or replace roof tiles, by using an exclusive hooking tool.

CONSTITUTION: This is a repairing method to exchange broken roof tiles or inferior tiles already laid to new ones. The periphery of nailing parts of objective tiles 2 is widened 1a, 1a, to remove nails and then a hooking tool is inserted from the clearance in the state that a new tile is once inserted from the lower rear face of the upper side tile to the upper side and the upper side edge of the exchanging tile is hooked. The exchanging tile is pulled to the front side to position it and then fixed with nails.