Finding Skylight Replacement Dome
Purchase a new curb mounted unit of the same size as this old one (in some unique cases it may require a special order if your unit is an odd-ball size). Then
just remove the whole existing skylight from the existing curbing. Peel off the old foam sealer material that is on top of the curbing and then lay down new sealer strip. Finally set on the new skylight and screw through its side holes into the curbing to secure into place.