A typical Gwinnett County house has a dozen or more interior doors, and in a Snellville split-level or a Suwanee two-story alike, most of them are the same molded six-panel door the builder ordered by the truckload. They wear out the same ways: hinges sag until the door rubs the top of the frame, latches stop catching after the house settles, closet bifolds jump their tracks, and hollow-core doors pick up a dent or a hole from a doorknob. Most of that is a repair. Some of it calls for a new door.
Repairs that fix the way a door swings
A door that rubs at the top corner usually needs one long screw, driven through the top hinge into the framing, to pull the frame back into line. A latch that misses the strike plate gets the plate moved or its opening enlarged instead of the door being planed. A door that swings open or shut by itself is hanging from a frame that is out of plumb, which a hinge adjustment can usually correct. Bifold and bypass closet doors get new pivots, guides, and track hardware, and a pocket door that has dropped off its track gets its rollers rehung from inside the pocket.
Slab doors and prehung doors
When a door is past repair, there are two ways to replace it. A slab is the door alone, cut and mortised to fit the hinges and latch already in the frame; it suits a sound frame and a house where the new door has to match the rest. A prehung door arrives already hanging in its own frame and replaces the old frame too, which is the cleaner fix when the jamb is split or the opening has racked out of square. Either way the door is set plumb with an even gap all around, and the casing goes back up, nailed and caulked for paint.
Styles, quiet, and hardware
Hollow-core doors are light and inexpensive. Solid-core doors weigh more, close with a duller sound, and block more noise, which makes them the usual choice for a bedroom, a home office, or a laundry room next to the den. Plenty of Duluth and Lawrenceville owners trade the six-panel look for a flat shaker style and swap every knob in the house for a lever at the same time, room by room in one visit. A barn door on a wall-mounted track is another answer where a swinging door gets in the way, as long as the track is anchored into framing across the opening.
Doors in older houses
A frame that has shifted with the house gets shimmed and squared before a new slab is cut to fit it. In the older houses around Norcross and Lilburn, doors and casings can carry many layers of old paint, so the build year comes up before anything is planed or sanded.