To easily improve the beauty of the appearance of a sealing device when improving sealing performance of the sealing device on a ridge roof.

This ridge roof 1 is provided with a group of left and right clay roof tiles 4, 5 tiled on left and right surfaces of a ridge basic part 2, respectively, and a ridge substrate member 21 supported on the ridge basic part 2 and supporting a group of ridge tiles 6 extending in the longitudinal direction A of a ridge crest 19 constituting the ridge basic part 2. A plurality of sealing devices 9 for ridge roof for sealing a clearance 8 among the group of clay roof tiles 4, 5 and the group of ridge tiles 6 are provided by separating from each other in the longitudinal direction A of the ridge crest 19, and this sealing device is provided with a supporting bar 25 extending in the direction of width of the ridge crest 19 and fixing its halfway part to the ridge substrate member 21, a rigid water drip member 26 extending in the longitudinal direction A in the vicinity of a rear surface of the group of ridge tiles 6 and supported on an end part of the supporting bar 25, and an elastic sealing body 28 provided among the water drip member 26 and surfaces of the group of clay roof tiles 4, 5 and brought into pressure-contact with the surfaces of the group of clay roof tiles 4, 5 in a face contact manner by pressing force from the water drip member 26.