Interior Door Won't Latch or Stay Shut? Fix the Strike-Plate Alignment

My interior door won't latch — it swings shut but pops back open or the latch bolt doesn't catch the hole in the strike plate. How do I realign the strike plate so the door stays closed?

A door won't latch because the spring-loaded latch bolt no longer lines up with the hole in the strike plate on the jamb — almost always off by a sixteenth to a quarter inch from house settling, humidity swelling, or loose hinges. You diagnose the exact direction it's missing, then either file the strike hole bigger, move the strike plate, or tighten the hinges to bring it back into line. A 15-minute fix in most cases with a screwdriver and maybe a file.

ℹ️ Reference only: For general reference only. This guide does not guarantee any result — every home is different. Verify against your local building codes and a licensed professional before acting, especially for electrical, gas, plumbing, structural, or roof work.

💵 $0–15 DIY (you likely already own a screwdriver; a metal file is ~$8–12 and longer 2.5–3 inch screws are a few dollars). A handyman call-out runs $75–200 depending on your area and whether the door needs rehanging. ⏱ 15–30 minutes for a typical strike/hinge fix; up to an hour if you have to chisel and relocate the strike plate. ● DIY-friendly

Common causes

Latch bolt hits ABOVE or BELOW the strike hole (vertical misalignment) — usually from a sagging door because the top hinge screws have loosened, or the house has settled. (most common)
Quick check: Close the door slowly and watch where the latch bolt tip lands on the strike plate. Or smear lipstick/pencil on the latch bolt, push it against the strike, and see where the mark lands relative to the hole.
Latch bolt hits TOO FAR OUT (toward you) — the door isn't closing deep enough, so the bolt never reaches the strike hole. Often a swollen door, paint buildup on the jamb stop, or weatherstrip/carpet holding it open. (common)
Quick check: Push firmly on the door while turning the knob. If it latches when you press hard, the bolt is reaching but the door isn't seating — it's a depth problem, not vertical.
Latch bolt lands left/right of center on the strike hole (horizontal) — the hole just needs slight enlargement on one side. (common)
Quick check: With the door open, look straight at the strike hole, then close slowly and note if the bolt is biased to one edge of the hole.
Loose hinge screws letting the whole door drop — the real root cause behind many 'sudden' latching problems. The top hinge carries the most load and strips out first. (common)
Quick check: Grab the door by its outer (latch) edge and lift up/push in. If it moves or you hear the hinge clunk, screws are loose. Check that hinge screws are snug, especially the top hinge.
Seasonal humidity swelling the door or jamb — the door binds and stops short. Comes and goes with the weather, which is the tell. (less common)
Quick check: Note whether the problem appeared in a humid/wet season and eases when it's dry. If so, avoid permanent material removal and try the gentler fixes first.

How to fix it

Diagnose first. Color the tip of the latch bolt with a pencil, lipstick, or a dark marker. Close the door normally, then open it and look at the strike plate — the smudge shows exactly where the bolt is hitting relative to the hole. This one step tells you which fix you need; skip it and you'll guess wrong.
Tighten all the hinge screws (do this before anything else). Open the door, snug every hinge screw with a screwdriver — not a drill, you don't want to overdrive and strip the hole. If a screw just spins and won't bite (stripped hole), back it out, tap a few wooden toothpicks or a golf tee with wood glue into the hole, snap them flush, let it set, and redrive. For a sagging door, replace one top-hinge screw with a 2.5–3 inch screw that reaches the wall framing behind the jamb — this pulls the door up and over, often curing the misalignment outright.
If the smudge is just slightly off (within ~1/8 inch of the hole), enlarge the strike hole with a metal file. Remove the strike plate's two screws, clamp it or hold it firmly, and file the edge of the hole in the direction the bolt is missing (file the top edge up if the bolt hits high, the bottom edge down if it hits low). Test-fit, file a little more if needed. Deburr the filed edge and reinstall. This is the fastest fix for small misses.
If the bolt misses by more than about 1/8 inch, move the strike plate. Unscrew it, reposition it up/down or in/out as the smudge indicated, and mark new screw holes. If you only need a tiny shift, you can sometimes reuse the holes by angling the screws. For a bigger move you'll need to chisel the mortise (the recessed pocket) slightly larger and fill the old screw holes with toothpicks/glue so new screws bite. Re-test before the final tighten.
If it's a depth problem (bolt reaching but door won't seat), find what's stopping it: scrape paint buildup off the jamb stop, sand a swollen edge lightly, or check for carpet/weatherstrip in the way. Alternatively, move the strike plate slightly toward the door stop so the bolt catches sooner — but don't move it so far the door rattles.
For seasonal swelling, try a non-permanent fix first: rub a candle or bar soap on the binding edge, or adjust the strike. Only sand/plane the door as a last resort, and do it at the end of the humid season so you don't over-remove and leave a gap when it dries.
Final check: close the door ten times. It should latch on a normal swing with no slam and no rattle when shut. If it rattles, the strike sits a hair too far out — nudge it toward the stop. If it still won't catch, recheck the smudge test; the geometry changed.

DIY or call a pro?

This is a beginner-friendly DIY job for the vast majority of cases — tightening hinges, filing a strike hole, or moving a strike plate needs only hand tools and patience. Call a carpenter or handyman if the door itself is visibly warped or cracked, the jamb is rotted or pulling away from the wall, the gaps around the door are wildly uneven (a sign the rough opening has shifted structurally), or you've moved the strike and tightened hinges and it still binds — at that point the door may need rehanging or planing, which is fussier work. Rot or a structurally shifting opening is a pro call, not a DIY patch.

Tools & parts

Phillips screwdriver (manual, not a drill, for hinge screws)
Pencil, lipstick, or dark marker (for the smudge/diagnosis test)
Metal/mill file (flat or half-round) to enlarge the strike hole
Wooden toothpicks or golf tees + wood glue (to fix stripped screw holes)
2.5–3 inch wood screws (to reach framing and lift a sagging door)
Wood chisel and hammer (only if relocating the strike plate's mortise)
Drill with small bit (optional, for pilot holes when moving the strike)
Eye protection
Bar soap or candle wax (for a binding/swollen edge)

Keep a record of every fix you make — what broke, what it cost, how you solved it.

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Based on: General home-maintenance and carpentry best practices (strike-plate alignment, hinge-screw repair with toothpicks/longer screws, mortise relocation); Common door-hardware manufacturer installation guidance (latch bolt and strike plate fit)

General home-maintenance guidance for a typical US interior door. Your specific door, jamb, and hardware may differ. If anything seems structurally wrong (warping, rot, a shifting opening) or you're unsure, consult a qualified carpenter or handyman.