Entry doors, patio doors, and storm doors
Entry doors are composite slabs with hardware and sidelights specced to the elevation. Sliding patio doors keep the glass out of the room. Hinged patio doors swing in or out. Storm doors are their own job: full-view glass, screen, and a closer that does not slam.
The old door and frame come out. The sill and framing get a look. Every install uses pan flashing, foam, and premium sealants.
Drafts at the slab, a door that drags, fog in the glass, and locks that miss are the reasons to replace it.