How to Fix a Sticking Interior Door
What this project involves
An interior door can stick because of loose hinges, paint buildup, seasonal swelling, a shifted frame, or an isolated high spot. Diagnose the contact point before sanding or planing so you do not remove material the door needs later.
Tools
- screwdriver
- pencil or chalk
- straightedge
- sandpaper only after diagnosis
Materials
- longer replacement hinge screw only when appropriate to the frame and hinge condition
- touch-up paint or finish if material is removed
Find exactly where the door contacts the frame
Close the door slowly and watch the gap around all four sides. Look for rubbed paint, a tight corner, or a latch that must be lifted. A pencil or chalk mark on the contact area can help reveal where it transfers. Seasonal humidity can make a wood door behave differently at different times of year.
Tighten hinges before removing wood
Open the door and snug loose hinge screws. A sagging top hinge can make the latch-side top corner rub while also dropping the latch below the strike. If a screw spins, the hole needs an appropriate repair; driving a much larger screw blindly is not automatically safe or effective.
Check the hinge-side gap
Paint buildup behind a hinge leaf, a bent hinge, or a hinge that is not seated can change alignment. Compare the top and bottom gaps. A hinge problem should be corrected at the hinge rather than sanded off the opposite side of the door.
Adjust the strike only when the door is otherwise aligned
If the door swings freely but the latch lightly misses the strike, small strike adjustments may solve it. If you have to lift or shove the whole door to latch, fix the sag or rubbing first. Moving the strike to follow a badly sagging door masks the real issue.
Sand or plane only a confirmed high spot
If alignment is sound and one edge still binds because of paint or minor swelling, mark the exact area. Remove the least material necessary, tapering into the surrounding edge. Seal or repaint exposed wood so it does not absorb moisture. Avoid aggressive planing on fire-rated, hollow-core, or specialty doors without understanding their construction.
Movement can be a clue to a larger problem
A door that suddenly sticks along with new wall cracks, floor movement, or multiple doors changing at once may reflect building movement rather than a hinge adjustment. Persistent moisture can also swell wood and damage frames.
Use the reveal around the door as a diagnostic map
The narrow gap between door and frame tells a story. A tight latch-side top corner with a widening hinge-side gap often suggests sag. A uniformly tight top edge can indicate swelling or frame movement. A single painted ridge can be buildup. Study the gap before touching tools; the pattern usually points to the least destructive correction.
Mistakes that make this job harder
- Sanding the latch edge before checking loose hinges
- Moving the strike plate to chase a sagging door
- Removing too much material during a humid season
- Ignoring sudden sticking accompanied by new cracks or moisture
When this stops being a basic DIY job
Get help when multiple doors suddenly change, the frame is visibly out of square, there are structural or moisture signs, the door is fire-rated or unusually heavy, or hinge/frame damage will not hold fasteners.
Questions people usually hit during this project
Why does my door stick only in summer?
Wood can swell with seasonal humidity. Correct hinge problems first and remove material cautiously so the winter gap does not become excessive.
Should I sand the top of a sticking door?
Only after confirming the top edge itself is the problem and the hinges are sound. Sagging commonly makes a top corner rub even though the door does not need trimming.
Why does the latch miss the strike?
Loose hinges, door sag, frame movement, or strike position can all cause it. Diagnose swing and gaps before moving hardware.
Times and costs are rough planning ranges, not quotes. Product instructions, local codes, permits, actual home conditions, and qualified professional advice take priority.