Door Won't Latch or Close Properly: Strike Plate & Hinge Fix

Common Symptoms

• Latch bolt doesn't reach the strike plate hole — misses by 1/8 to 1/2 inch vertically or horizontally
• Door closes but the latch doesn't click — requires lifting or pushing the door to engage
• Door pops open on its own even when latched — latch bolt not fully seating
• Door rubs or drags against the door frame on one side
• Door bottom drags on the floor or threshold
• Door is hard to close in summer but works fine in winter
• Visible gap between door and frame on the latch side when closed
• Door hinge side shows a wedge-shaped gap — wider at top or bottom

Most Likely Causes

1. 1

   Strike Plate Misalignment — Most Common Cause

   The strike plate is the metal plate mortised into the door jamb that the latch bolt clicks into. Over time, the door frame settles, the door sags slightly, or the latch bolt length changes, causing the bolt to no longer align with the strike plate hole. Even a 1/8-inch vertical misalignment is enough to prevent latching. You can spot this by watching the latch bolt as the door closes — if it contacts the strike plate face rather than sliding cleanly into the hole, misalignment is the problem.

2. 2

   Sagging Hinges — Secondary Cause

   Door hinges carry the full weight of the door (a solid-core exterior door can weigh 80+ pounds). Over years of use, the screws pull loose from the frame, allowing the door to sag. The top hinge usually loosens first, dropping the latch side of the door downward and pulling it away from the frame. A telltale sign: the hinge side of the door fits the frame well, but the latch side has a wider gap at the bottom than the top.

3. 3

   Door Frame Settling

   House settling over years or decades shifts the door frame out of square. The door itself may be perfectly fine, but if the rough opening has racked even slightly, the door will no longer hang plumb. This produces a situation where the door latches but the frame gap is uneven — wider at one corner than the other. Minor settling can be compensated with strike plate adjustments; significant racking requires re-squaring the frame.

4. 4

   Seasonal Wood Swelling

   Wood doors expand when they absorb moisture in humid summer months and contract in dry winter months. A door that latches fine in January but won't close in August is almost certainly a swelling issue. The door expands across its width primarily, so the latch edge thickens. This is normal behavior for solid wood and hollow-core doors with wood stiles. Painting all six faces of the door (including top and bottom edges, often neglected) dramatically reduces seasonal movement.

5. 5

   Latch Bolt Not Extending Fully

   The latch bolt mechanism can wear out or accumulate paint and debris over time, preventing the spring-loaded bolt from extending to its full 5/8-inch depth. If the bolt barely protrudes from the door edge or moves stiffly, the lockset mechanism itself needs cleaning or replacement rather than strike plate adjustment. Test: with the door open, depress the latch bolt by hand and let it spring out — it should snap out crisply to full extension.

6. 6

   Worn Latch Mechanism

   The spring inside the latch assembly fatigues over time, especially on doors that are opened and closed many times per day (entry doors, bathroom doors). A weak spring produces a bolt that protrudes only partially, or retracts under light pressure. Replacing the entire lockset or just the latch mechanism (the cylindrical part that inserts in the door edge) typically costs $15–$40 and takes about 20 minutes.

Quick DIY Checks

1. 1Step 1 — Find where the latch bolt is hitting: close the door slowly and watch exactly where the latch bolt contacts the strike plate. If it hits the face of the strike plate above or below the hole, the plate needs to move vertically. Apply lipstick or chalk to the latch bolt face, then close the door and open it — the smear mark on the strike plate face shows exactly where the bolt is landing. Measure the offset: 1/8 to 3/16 inch — file the strike plate opening; 1/4 inch or more — consider moving the plate.
2. 2Step 2 — File the strike plate opening (for small misalignments up to 3/16 inch): remove the strike plate with a screwdriver. Use a flat metal file (bastard-cut) to enlarge the opening in the direction needed — typically extend the bottom of the hole downward if the bolt hits low. File in smooth strokes, check fit frequently, and stop when the door latches cleanly. Reinstall the strike plate and test. This fix costs nothing if you have a file and takes about 15 minutes.
3. 3Step 3 — Move the strike plate (for larger misalignments over 1/4 inch): remove the strike plate. Use a sharp 1-inch wood chisel to extend the mortise in the door jamb in the direction needed — work the chisel bevel-down to shave thin layers. Move the plate, mark new screw positions, drill pilot holes (3/32-inch bit), and re-screw. Fill the old screw holes and exposed mortise wood with wood filler, let dry, sand flush, and repaint.

1. 4Step 4 — Fix sagging hinges with longer screws: remove one screw at a time from the hinge leaf on the door frame side (not the door itself). Replace the factory 3/4-inch screws with 3-inch wood screws of the same head diameter. These reach through the jamb and into the structural framing behind it, effectively re-anchoring the hinge. This fix resolves 70% of sagging door issues at zero material cost if you have 3-inch screws. The top hinge is the most critical — always start there.
2. 5Step 5 — Shim a hinge if the door tilts toward the hinge side: if the door hinge side binds (tight gap) and the latch side has a gap, the hinges may be mortised too deep. Insert a thin cardboard shim (cut from a cereal box or business card stack) behind the hinge leaf — place behind the bottom hinge to tip the door away from the hinge side at the bottom. Add shimming in thin increments; even a business-card thickness (0.3mm) can make a noticeable difference in door swing alignment.
3. 6Step 6 — Locate the rub spot with chalk or paint: rub chalk or a candle wax stick along the door edge on all four sides. Close the door firmly and open it. The chalk transfers to wherever the door is rubbing the frame — a precise chalk smear marks the high spot. For top-edge rubs, tighten the hinge screws first; for latch-edge rubs in summer months, try the 3-inch hinge screw fix before planing.
4. 7Step 7 — Plane the door edge as a last resort for seasonal swelling or frame racking: if the above fixes don't resolve rubbing or a door that won't close in humid months, the door edge needs material removed. Remove the door from its hinges (tap hinge pins up with a screwdriver and hammer). Lay the door across two sawhorses. Use a hand plane or belt sander to remove 1/16-inch increments from the edge that's tight, re-hang the door to test fit, and repeat. Aim to restore a 1/8-inch reveal (gap) all around the door perimeter. Immediately seal the planed edge with paint or primer to prevent moisture re-entry.

Repair vs Replace

Recommended Tools & Parts

• Flat Metal File (Bastard Cut, 8-inch)

  Used to enlarge the strike plate opening for small misalignments. A bastard-cut (medium) file removes material quickly without excessive raggedness. Works on brass, steel, and nickel strike plates.

  $8–$15

  Buy on Amazon →

• Wood Chisel Set (3/4-inch and 1-inch)

  Required for extending a strike plate mortise when moving the plate more than 1/4 inch. Buy a set with both 3/4-inch and 1-inch chisels — the 1-inch is ideal for the full-width strike plate mortise.

  $15–$30

  Buy on Amazon →

• 3-inch Deck Screws (Same Diameter as Hinge Screws)

  Replacement hinge screws that reach through the door jamb and into the structural framing. Resolves hinge sag without shimming. Use screws matching the hinge screw head style (typically #9 flat head).

  $5–$10

  Buy on Amazon →

• Kwikset or Schlage Latch Assembly (2-3/8 or 2-3/4 backset)

  Replacement latch mechanism for worn or stiff latch bolts. Measure the backset (distance from door edge to center of knob hole) before ordering — 2-3/8 inch is standard for interior doors, 2-3/4 inch for most exterior doors.

  $15–$30

  Buy on Amazon →

Links are Amazon affiliate links (tag: fixitfastai-20). Prices are estimates.

Related Repairs