The present disclosure provides an installation structure of a curved tile, including a first curved tile and a second curved tile which each comprises a tile body, wherein both ends of the tile body are respectively a first curved overlapping portion and a second curved overlapping portion, a curved surface of the first curved overlapping portion faces downward, a curved surface of the second curved overlapping portion faces upward, the first curved overlapping portion of the first curved tile overlaps on the second curved overlapping portion of the second curved tile, and a waterproof structure is disposed at a position where the first curved tile overlaps with the second curved tile.

A roofing assembly disposed on an underlying support comprising an underlayment assembly disposed in a securing relation to the underlying support. A conduit assembly is disposed on the underlayment assembly and structured to define a path of fluid flow. The path of fluid flow extends along at least a majority portion of said underlayment assembly. The conduit assembly is disposed in a single, continuous, looped relation to the underlayment assembly. A plurality of pan tiles are partially disposed in a confronting relation to the underlayment assembly. At least some of the plurality of pan tiles are partially disposed in an overlying relation to at least a portion of the conduit assembly. The plurality of pan tiles are disposed to have a predetermined spacing in between each other, which is disposed to receive at least a portion of the conduit assembly.