How to Fix a Sticking or Sagging Interior Door
A door that needs a shove to close can turn an ordinary room into a daily annoyance. The cause is often simple: a loose hinge screw, a latch catching its strike plate, or a thick ridge of paint. Before reaching for sandpaper, find out where the door touches. A few careful checks can help you fix a sticking door without removing wood unnecessarily.
Find Out What Is Catching
Open and close the door slowly while holding the handle down so the latch stays retracted. Watch the gaps around the door and listen for scraping.
If the door moves freely with the latch retracted but catches when you release the handle, concentrate on the latch and strike plate—the metal plate on the frame. If it still rubs, investigate the hinges, door edges, and frame.
| What you notice | Likely cause | First check |
|---|---|---|
| Uneven gaps, a dropping latch edge, or improvement when you gently lift the handle | Loose hinges or worn hinge hardware | Check screws and hinge movement |
| Door swings freely but will not latch | Latch and strike plate misalignment | Check where the latch meets the opening |
| Raised paint ridges, shiny rub marks, or sticking after repainting | Paint buildup or insufficiently cured paint | Inspect the contacting surfaces |
| Tightness during humid weather that eases in drier conditions | Seasonal wood movement | Check humidity and signs of dampness |
| Sudden sticking alongside cracks or a distorted frame | Frame movement or another underlying problem | Investigate before adjusting the door |
These clues can overlap. A sagging door may also have a misaligned latch, so correct hinge problems first.
Gather a Few Basic Tools
Start with a screwdriver that fits the screw heads, a flashlight, a pencil, and a door wedge. A sanding block, wood glue, and repair materials may be useful later, depending on what you find.
Before disturbing older paint, establish whether lead could be present. In U.S. homes built before 1978, painted surfaces may contain lead; the EPA’s guidance on lead-safe renovations explains assessment and precautions and recommends certified contractors for this work. Avoid scraping, drilling, or sanding suspect coatings until you have addressed that risk.
If you rent, report the problem and check with your landlord before altering the door, frame, or hardware.
Tighten the Hinges First
Loose screws are a good place to start when you need to repair a sagging interior door.
- Open and support the door. Slide a wedge underneath until it lightly supports the weight. Avoid forcing the door upward.
- Inspect every hinge. Look for screw heads standing proud, gaps behind the hinge leaves, and movement where the hinge meets the door or frame.
- Tighten loose screws by hand. Pay particular attention to the top hinge. Stop when each screw is snug; excessive force can strip the hole.
- Remove the wedge and test again. Check whether the gaps look more even and whether the latch now engages.
A screw that keeps turning without tightening usually has lost its grip. Repeatedly driving it harder will enlarge the damaged hole.
For a stripped hole in sound wooden framing, a properly fitted wood plug glued into the hole can provide a fresh fixing point. Support the door, repair one hole at a time, allow the glue to cure fully, then drill an appropriately sized pilot hole before replacing the screw.
Do not automatically substitute a much longer screw: the framing, wall construction, and concealed services need consideration. Cracked wood, loose hinge recesses, or visibly worn hinges may need a more substantial repair.
Adjust the Latch After the Door Hangs Correctly
Once the hinges are secure, test the latch again. Moving the strike plate before correcting sag can leave you with another alignment problem later.
First, tighten any loose strike plate screws. Then put a little chalk on the latch tip and close the door gently against the plate. The transferred mark can help show whether the latch is hitting above, below, or beside the opening.
For a very small adjustment, loosen the strike screws and see whether the existing screw clearance allows the plate to move into alignment. Retighten it and test several times.
A larger move may require filling the original screw holes, drilling new pilot holes, and extending the shallow recess that holds the plate. If that work is unfamiliar, a carpenter can reposition it accurately. Avoid enlarging the opening repeatedly without checking the cause; an oversized opening can leave the door rattling.
Check Paint Buildup and Seasonal Swelling
When paint is causing the problem
Inspect the door edges, frame, and doorstop—the narrow strip the closed door rests against. Thick layers can reduce clearance, while fresh paint can make contacting surfaces stick together.
If the problem began immediately after painting, check the coating’s stated curing time. Paint can feel dry before it is ready for prolonged contact.
Once paint safety is established, remove only the raised buildup responsible for the contact. Check both surfaces before deciding which needs attention. Applying another coat over a thick ridge will reduce the clearance further.
When humidity is causing the problem
Wood can expand as it absorbs moisture. A door that binds during humid weather but works normally in drier conditions may need moisture control before any trimming.
Use bathroom and kitchen extraction, address leaks, and check whether the room stays unusually damp. A basic humidity meter can help you track whether sticking follows changing conditions.
Allow the door time to respond after moisture conditions improve. Sanding a temporarily swollen door can leave an excessive gap when it dries. Localized swelling, water stains, or soft wood deserve investigation rather than routine sanding.
Sand Only a Confirmed High Spot
Sanding is appropriate when the hinges are secure, moisture problems have been addressed, and a small, persistent contact point remains.
Close the door gently until it touches and mark the rubbing area with pencil. Look for matching polished or scuffed patches on the frame.
For a minor adjustment on a suitable wooden edge:
- Secure the door so it cannot swing while you work.
- Use a sanding block with medium-fine paper, such as 120–150 grit.
- Sand the marked area lightly, following the grain where possible.
- Remove the dust and test the fit frequently.
- Smooth the surface and restore the appropriate primer and finish, allowing it to cure before closing the door against the frame.
Wear eye protection and suitable dust protection when sanding confirmed lead-free material, and contain and clean up the dust.
Keep the edge flat and preserve any existing bevel. Hollow-core doors have limited material around their edges, so check the manufacturer’s trimming allowance before removing wood. Leave labeled fire doors and unfamiliar door constructions to someone qualified to assess them.
Know When the Door Needs Further Investigation
Stop making adjustments if the frame is loose, hinge repairs repeatedly fail, or the door has become noticeably twisted. Several doors sticking suddenly, new wall cracks, or a visibly distorted opening also justify a closer inspection.
A door rubbing after new flooring may need a different correction from one affected by sagging hinges. Check what changed before choosing the repair.
After any adjustment, open, close, and latch the door several times. It should move smoothly and latch with gentle pressure, without lifting the handle or pushing against the frame. That repeated check is the best way to confirm that the repair has addressed the cause.