How Do I Fix a Sticking Door or One That Won't Latch?

A door that sticks, drags, or refuses to close is almost never broken; it is a door whose fit has shifted, usually because of how the house moves with the seasons. In our climate, doors that close easily in fall can bind in July, because humidity swells the wood and the humidity-warped door jamb, and then ease again in winter when the wood dries. Before touching the door with any tool, figure out where it binds and why: watch the gap around the closed door, look for fresh scrape marks on the edge or a hinge that has worked loose, and check whether the strike plate is actually receiving the latch at all.

Try the zero cost fixes in order: tighten the hinge screws with a screwdriver; a loose hinge changes the whole geometry. Check the strike plate next, and confirm the latch lines up rather than missing the hole or hitting the plate's edge. More often than people expect, the fix is a quarter turn on those hinge screws, not a planed door.

Tighten every hinge screw on both the door and the jamb side first; if the screws are stripped and spin freely, the fix is longer screws or wooden golf tees or matchsticks glued into the holes, then re-driving the screws. Hinge problems cause sticking, sagging, and latch misses all at once, and they are the fastest repairs in the book. If the door drags at the top edge, the hinge side is loose or the door is settling; shimming the lower hinge with a thin cardboard shim can lift the door, and re-seating a sagged hinge fixes most gate and patio doors the same way.

If the door binds along the edge, the classic summer problem, the fix is to remove a little wood: take a pencil and run it down the binding edge with the door almost closed, so the pencil marks exactly where it rubs, then sand or plane that edge lightly, sanding just a few passes at a time and checking the fit between each, because wood can be removed far faster than it can be added back. Paint buildup along the edge does the same job as humidity, and a paint scraper or a sanding pass handles it without removing wood.

If the door closes but the latch will not catch, the strike plate is misaligned, and the fix is a file or a repositioned plate, not a new lockset. Close the door and look at where the latch hits the plate: if it hits the plate's face at all, the plate opening needs enlarging, which a metal file or a small grinder fixes in minutes; if it misses the plate entirely, loosen the plate screws, move it slightly in the right direction, and retighten. Plates often have slotted holes that allow this adjustment, and they are recessed, so shimming behind the plate with thin cardboard raises it toward the latch.

Lubricate the latch and strike occasionally with a graphite or dry lubricant, never oil, which collects dust and gum; graphite is the classic locksmith choice for a reason. A latch that will not extend at all, or sticks in, usually needs the lockset cleaned or replaced, and handlesets in homes that see decades of use are an inexpensive, high-satisfaction swap when the mechanism itself has worn out.

A door that binds progressively, a gap that grows at the top while the bottom drags, or jamb cracks that widen can signal the house settling, not the door. In older homes, a foundation or load issue shows up first as doors that stop fitting, because door frames are the most sensitive indicators of very small movements. If multiple doors on the same wall change fit the same season, or a door frame looks racked and out of square even when open, have a professional look at the structure before you keep planing wood.

For the rest, the sand, shim, and adjust routine is a satisfying afternoon. If you are selling, sticky doors and missing latches are the kind of small frictions buyers deliberately open, close, and remember; a house where every door closes with a clean click tips the scales. If you are buying, a door that will not latch is trivia, but a row of doors that all fit badly on one floor is a clue worth investigating.