How to Fix a Door That Won't Close Properly

What we checked to reach this conclusion

We reviewed guidance from professional carpenters, building-science resources, and home-inspection bodies, cross-referencing their diagnostic sequences against community repair forums where homeowners documented what actually worked. The consistent finding: the overwhelming majority of residential door problems trace back to one of four mechanical causes — loose hinges, a shifted strike plate, wood swelling from moisture, or foundation movement — and the first three are reliably DIY-fixable in order of effort and cost.

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  Professional carpenter guidance reviewed This Old House and Fine Homebuilding both confirm that loose or under-length hinge screws are the single most common cause of a door failing to latch, and that replacing them with 3-inch screws is the correct first step.
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  Home inspection standards checked The American Society of Home Inspectors (ASHI) flags misaligned strike plates and hinge-screw failure as the two most frequently documented door defects during residential inspections, validating that these are real-world, widespread causes — not edge cases.
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  Seasonal wood movement data confirmed Building science resources document that interior wood doors can expand by as much as ⅛ inch in humid summer months, explaining why a door that closes fine in winter may stick badly in August — and why planing during peak humidity avoids over-removing material.
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  Foundation-movement warning signs verified Structural engineering guidance confirms that diagonal drywall cracks at frame corners combined with a newly binding door can indicate foundation settlement requiring professional assessment — distinguishing this from ordinary wear.

There's more than one right answer — here's how to choose

The best fix depends on what's actually causing your door to misbehave, so matching the approach to the diagnosis is what makes the difference between solving it once and tinkering forever.

What people try first that wastes time and money

These approaches are popular because they feel like obvious quick fixes — but they either treat the wrong cause or create new problems you'll have to undo.

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  Spraying lubricant on the hinges — WD-40 or hinge oil may quiet a squeak but does absolutely nothing for a door that won't close; the problem is almost never friction at the hinge pin, it's the mechanical position of the door relative to the frame, and lubricant can't fix geometry.
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  Aggressively planing before tightening the hinges — If the door is sticking because a hinge is loose and the door has sagged, planing the sticking edge and then tightening the hinge will leave a visible gap along the door edge where you removed wood — you've created a cosmetic problem on top of solving the real one.
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  Replacing the entire lockset or door handle — A door that won't latch is almost never a lockset problem; the latch bolt itself is usually fine, and the issue is that it can't reach the strike plate. A new lockset will have the exact same problem because the frame geometry hasn't changed.
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  Assuming you need a new door — Unless the door is physically warped beyond about ¼ inch (you can check with a long straight edge), virtually every closing problem is a frame or hinge issue, not a door issue. New doors are expensive; the fix is almost always in the hardware or the frame.