Abstract: A sealing system for sealing a cover about a roof opening. The system includes a perimeter sill having as a retaining clip and tab, a counterflashing, and a retaining rod placed between the counterflashing the retaining clip for securing the counterflashing piece in place. The counterflashing piece is inserted between the retaining clip and the retaining tab. The retaining clip provides the pressure against the retaining rod to prevent the counterflashing piece from slipping. The counterflashing piece has its lower edge shaped to in contact with the building when the counterflashing piece is inserted between the retaining tab and retaining clip.

Abstract: A technique for sealing a skylight at its curb frame about an opening in a building and in which the sealing technique is a dry sealing technique. In accordance with the invention, means are provided for directly securing the curb frame to the building. A flexible flashing flange extends from the base of the curb frame and is disposed about the periphery of the curb frame having a plurality of elongated spaced upstanding ribs that form flow diverters extending peripherally about the curb frame.