Why Your Door Sticks, and How to Fix It Without Replacing It

Humidity, settled frames, loose hinges and worn strike plates — how to diagnose a sticking door and fix the actual cause.

A door that sticks, will not latch, or swings open on its own is telling you something specific. Fixing the right thing takes minutes; planing the door edge because it seemed like the obvious answer usually makes it worse.

Diagnose before you cut anything

Close the door slowly and watch where it makes contact. Then look at the gap around the whole perimeter.

• Even gap all around, sticks in summer only — humidity. The door and jamb have swollen seasonally.
• Tight at the top of the latch side, wide at the bottom — the door has dropped, usually a loose top hinge.
• Tight at the bottom, wide at the top — frame movement or a settled floor.
• Latches only if you lift or push — the strike plate no longer lines up with the latch.
• Swings open or closed on its own — the frame is out of plumb.
• Rubs on the floor — new flooring, a settled floor, or a dropped door.

Fix 1: tighten the hinges (do this first, always)

Hinge screws work loose over years and a loose top hinge lets the whole door sag toward the latch side. This is the single most common cause and the easiest fix.

Tighten all the screws. If a screw spins without biting, the hole is stripped. Two fixes:

• Replace one or two of the top hinge screws with a longer screw — three inches or so — that reaches past the jamb into the framing behind it. This pulls the jamb tight and lifts the door. It is the single most effective five-minute door fix there is.
• Or fill the stripped hole with glued wood toothpicks or a dowel, let it set, then re-drive the original screw.

Fix 2: adjust the strike plate

If the door closes but will not latch, the latch and the strike hole have moved out of alignment. Look for a shiny witness mark on the strike plate showing where the latch is actually hitting.

Small misalignment: file the strike plate opening slightly in the needed direction. Larger: unscrew the plate, fill the old screw holes, and reposition it. Both are quick.

Fix 3: humidity

In Central Florida this is a genuine seasonal cause. Wood doors and jambs absorb moisture and swell, so a door that fits fine in January binds in August.

Before removing material, try:

• Running air conditioning consistently, which lowers indoor humidity
• Checking that the room's exhaust or ventilation is working, particularly in bathrooms
• Sealing the door's top and bottom edges, which are often left bare and absorb the most moisture

If you plane a door down to fit in August, it will have a large gap in January. Remove material only if the binding is year-round.

Fix 4: planing, if it is genuinely necessary

Only after the above. Mark exactly where it binds with a pencil, remove the door, and take off a small amount with a hand plane or a sander. Work gradually and rehang to check rather than removing it all at once.

Seal any bare wood you expose. In Florida humidity, an unsealed edge absorbs moisture and you will be doing this again.

Fix 5: the frame is out of square

If the gap is wildly uneven, the frame itself has moved. Shimming behind the hinges can bring it back into plumb, which is a real fix rather than a workaround.

Where a frame has moved significantly, or where the door is a badly hung replacement, a prehung unit is usually the better answer. Our guide on door installation costs covers when that makes sense.

Exterior doors have an extra check

On an exterior door, binding or a changed gap can indicate rot at the bottom of the jamb or the threshold, or a shifted sill. This is worth investigating rather than adjusting around, because the underlying moisture problem is doing damage you cannot see. See our article on wood rot in Central Florida.

When to call

Doors that have been planed repeatedly, frames that are visibly out of square, exterior doors with rot, and any door where the surrounding wall is cracking — that last one is movement in the structure rather than a door problem.

Inventive Home Improvement handles doors as part of our doors, windows and shutters work across Lakeland, Bartow and Polk County. Call (863) 633-5499.

Frequently asked questions

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