To provide a ridge core material supporting implement with sufficient strength, which facilitates height adjustment, and which enables the height adjustment to be performed even after a tile is laid along a ridge section.

This ridge core material supporting implement 1 comprises: a supporting implement base 2 which is provided with a mounting portion 8 mounted on the roof substrate of the ridge section, a support portion 9 elongated from an upper end of the mounting portion 8, and a first ridge core material retainer portion 10 provided at the upper end of the support portion 9 and allowing the placement of the ridge core material; and a second ridge core material retainer portion 20 which is insertably/extractably fitted and inserted into the retainer portion 10 of the base 2, and on which the ridge core material can be placed in a position higher than the retainer portion 10.