An apparatus for supporting a heavy load above a tile roof without causing damage to tile members, comprising: an elongated base member adapted to lie upon the surface of the roof underneath a tile member; a lag bolt for securing the the base member to a rafter in the roof; a slidable carriage having a threaded hole therethrough, the carriage slidably engaging the base member; a threaded elongated shaft capable of being inserted through a hole in the tile member and into threaded engagement with the carriage so that the end of the shaft may be caused to engage the base member and thereby fixedly secure the shaft; and a means associated with the shaft for attaching a heavy load.