A door that won’t close is more than an inconvenience. It affects security, temperature control, and the daily function of your home or business. The good news is that most closing problems come down to a handful of common causes, and many of them are fixable without a full door replacement.
This guide covers the most common reasons a door won’t close and what you can do about each one.
Check the Strike Plate
The strike plate is the metal plate mounted on the door frame that the latch or bolt slides into when the door closes. If the strike plate is misaligned, the latch won’t catch, and the door won’t stay shut.
Strike plate misalignment happens when the door frame shifts over time due to foundation settling, temperature changes, or moisture damage. You can check alignment by closing the door slowly and watching where the latch meets the plate. If the latch hits above, below, or to the side of the opening, the plate needs to be moved.
Removing the strike plate and repositioning it a few millimeters in the correct direction often solves the problem. You may need to chisel out additional wood in the frame to accommodate the new position. If the screw holes are stripped, fill them with wood dowels and glue before remounting the plate.
Inspect the Hinges
Hinges carry the full weight of the door. Over time, screws loosen, hinge pins wear, and the door begins to sag. A sagging door drags on the frame or floor and won’t close properly.
Tighten all hinge screws first. If the screw holes are stripped and the screws won’t hold, replace the short screws with longer ones that reach into the wall framing behind the door jamb. Three-inch screws are standard for this repair.
If the hinge pins are worn, the door may swing unevenly. Replacing the hinges entirely is the most reliable fix when the pins are loose or corroded.
Look for Frame Swelling
Wood door frames absorb moisture and swell, especially in humid climates and during seasonal weather changes. A swollen frame narrows the opening and causes the door to bind.
Identify the point of contact by looking for rub marks on the door and frame. Once located, you can sand or plane the high spot to create clearance. Be conservative with how much material you remove. Take a little at a time and test the door between passes.
If the swelling recurs seasonally, sealing and painting the frame will reduce moisture absorption and prevent the problem from returning.
Check the Door for Warping
A warped door does not sit flat in the frame. This creates gaps in some areas and tight spots in others, making it impossible for the door to close and seal evenly.
To check for warping, close the door and look at the gap between the door and frame from all four sides. If the gap is uneven, the door may be warped. Place a straight edge along the face of the door to confirm.
Minor warping in wood doors can sometimes be corrected by weighting the door flat over several days. Severe warping typically requires door replacement.
Examine the Latch & Lock Mechanism
A latch that doesn’t extend fully or retracts when it shouldn’t will prevent the door from staying closed. Test the latch by turning the handle while the door is open. The latch should extend and retract smoothly.
Internal lock mechanisms wear out over time. If the latch is stiff, sticky, or inconsistent, the hardware may need cleaning, lubrication, or replacement. Deadbolts that don’t align with the strike plate need the same attention as a misaligned latch.
Assess the Threshold & Weatherstripping
Exterior doors rely on thresholds and weatherstripping to close and seal properly. A damaged threshold or compressed weatherstripping can prevent the door from meeting the frame evenly.
Thresholds are adjustable on many exterior doors. Raising or lowering the threshold with the adjustment screws can restore proper contact. Weatherstripping should compress evenly when the door is closed. If it’s flat, torn, or missing, replace it with new material.
Consider Foundation & Structural Issues
In some cases, a door that won’t close points to a larger structural issue. If multiple doors in the home are sticking or failing to latch, the cause may be foundation settling or framing movement.
Signs of structural issues include cracks in drywall near door frames, uneven floors, and gaps between walls and ceilings. A structural assessment by a qualified contractor is recommended if these signs are present.
When to Call a Professional
If the door still won’t close after checking alignment, hinges, the frame, and the hardware, the issue may require professional diagnosis. Doors with concealed damage, multi-point lock systems, or commercial hardware should be serviced by a technician with the right tools and experience. Some problems look simple on the surface but involve underlying issues that need trained hands to resolve correctly.