How To Fix A Sticking Door?
QUICK ANSWER
Identify exactly where the door sticks (top, bottom, sides, or latch). For sagging doors, tighten hinge screws first; this fixes most cases. For high spots, sand or plane the rubbing area until the door clears. For humidity-related sticking, address the underlying moisture or accept some seasonal expansion.
A sticking door is one of the most common house annoyances and usually has a simple fix. The cause varies: sagging from worn hinges, swelling from humidity, foundation settling shifting the frame, or a door that wasn't properly fitted originally. The fix depends on the cause. Here is how to diagnose which problem you have, then the right repair for each.
Where exactly is the door sticking?
Run your finger along the gap between the door and the frame; you'll find the tight spot where the door rubs. Top corner sticking (door hits the top of the frame): door is sagging from worn hinges (most common). Bottom corner sticking: door is rubbing the floor or threshold; floor may have settled, carpet may be worn, or the door has slipped down. Latch side sticking (the side opposite the hinges): door has shifted toward the latch; either the door itself or the door frame has moved. Hinge side sticking: door is too tight in the frame; original fit was wrong or wood has swollen. The location tells you the cause.
How do you fix sagging doors?
Sagging from worn hinges is the most common cause; the top hinge takes the most stress and loosens first. Tighten all screws on the top hinge (often the fix). If screws spin without tightening (stripped holes), plug holes with wooden golf tees or matchsticks coated in wood glue, let dry, redrive screws. For severely sagged doors, replace top hinge screws with longer 3-inch screws that bite into the framing behind the door frame; this fixes most sagging.
How do you handle a door that's too tight?
If the door is sticking at the side or because of swelling: locate the high spot with sandpaper or a pencil rubbed along the rubbing area; this marks where the door touches the frame. Plane or sand down the high spot. For mild sticking: rub the rubbing area with sandpaper (60 to 80-grit) until the door clears. For more significant sticking: use a hand plane to remove material from the door edge. Take off only a small amount, test fit, repeat. Aim to leave 1/8 inch clearance around the door. Don't overdo it; once material is removed, you can't put it back. For doors swelling seasonally with humidity, planing fixes the summer condition but leaves a winter gap; some sticking with humidity changes is normal.
What about humidity-related sticking?
Wood doors absorb moisture and swell in humid weather. Doors that stick only in summer are humidity-related. Options: live with seasonal sticking (it goes away as humidity drops). Reduce humidity with a dehumidifier. Seal the door's edges with polyurethane to slow moisture absorption. Plane minimally for worst-case swelling, accepting a winter gap. Year-round sticking is sagging or frame movement, not humidity.
Sticking doors usually trace to one of three causes: sagging from worn hinges (most common), humidity-related swelling, or frame settling. Diagnose by finding the exact rubbing point. Tighten hinges first; this fixes most sagging issues. Plane or sand high spots. Seal door edges to reduce humidity swelling. For doors with multiple problems or severe settling issues, professional door re-hanging is worth the cost. With proper diagnosis and the right fix, most sticking doors operate smoothly for years.
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