How to Fix a Sagging Interior Door Correctly

A door that scrapes the floor, sticks at the latch, or leaves an uneven gap at the top is more than a daily annoyance. It can scuff flooring, damage trim, strain the hinges, and make a rental or home feel poorly maintained. The good news is that most doors do not need to be replaced. Learning how to fix sagging interior door problems starts with finding out why the door moved out of alignment in the first place.

A sagging door usually has a simple cause: loose hinge screws, worn screw holes, a shifting frame, or a door that has swollen from moisture. Start with the least invasive repair. A few correctly installed screws often solve the problem in minutes.

Confirm That the Door Is Actually Sagging

Before adjusting anything, close the door slowly and look at the gaps around all four sides. A sagging door typically has a narrow or rubbing gap near the top latch side and a wider gap near the bottom latch side. The door may also strike the floor at the latch-side corner.

Open the door halfway and gently lift the latch-side edge. If it moves upward noticeably, the hinges or their screws are likely loose. Check each hinge for missing screws, stripped screw heads, bent hinge leaves, or a hinge that has pulled away from the jamb.

Not every sticking door is sagging. If the gaps are even but the door rubs along one edge, seasonal humidity may have caused the wood to swell. If the door closes but will not latch, the strike plate may simply be out of position. Diagnosing the issue first prevents unnecessary sanding, shimming, or planing.

How to Fix Sagging Interior Door Hinges

For most interior doors, the top hinge is where the real problem shows up. It carries much of the door's weight, and the screws can loosen over years of opening and closing. Begin by tightening every hinge screw with a hand screwdriver. A drill can work, but it is easy to overdrive screws and strip the wood further.

Close the door again after tightening the screws. If the gaps are now even and the latch lines up, the repair is complete. If a screw turns without tightening, its hole has become stripped and needs to be reinforced.

Repair stripped hinge screw holes

Remove one loose screw at a time so the hinge stays in position. Apply wood glue to several wooden toothpicks or small wood splinters, insert them into the stripped hole, and break them off flush with the jamb. Let the glue set according to the product instructions, then reinstall the screw.

For a stronger long-term repair, use a hardwood dowel that matches the diameter of the damaged hole. Drill the hole cleanly, glue in the dowel, trim it flush, and drill a small pilot hole before reinstalling the hinge screw. This is a better choice when several screws have failed or when the door is solid wood and relatively heavy.

Avoid using larger screws without checking clearance first. A screw that is too wide can split the jamb. A screw that is too long can hit wiring, plumbing, or framing components in unusual wall conditions.

Use a longer top-hinge screw when needed

If the jamb itself is secure but the door continues to sag, replace one of the top-hinge screws with a 2 1/2-inch or 3-inch wood screw. The longer screw should pass through the hinge and jamb and bite into the wall framing behind it. This pulls the hinge side back into alignment and provides much more holding power than a short factory screw.

Use a screw with a head that sits properly in the hinge recess. Predrill a pilot hole to reduce the chance of splitting the wood. Tighten it gradually while watching the reveal around the door. If the gap begins to improve, stop once the door is aligned. Overtightening can pull the jamb too far and create a new rubbing problem.

Check the Hinge Position and Door Frame

If the screws are tight but the door is still low on the latch side, inspect the hinges more closely. A loose hinge leaf may be sitting proud of the jamb because of old paint buildup, damaged wood, or a previous repair that was not seated correctly.

Remove the hinge pins and support the door with a helper or a wedge underneath. Inspect the mortises - the recessed areas where hinges sit. The hinge leaves should sit flat and flush. Scrape away paint drips or debris, then reinstall the hinges.

Look along the door frame as well. In older homes, seasonal movement, settling, and repeated force can cause a jamb to shift. Signs include cracked caulk at the trim, a visible gap between trim and wall, or hinges that move even though the screws are tight. A frame issue may require resetting the jamb, adding shims, and securing it to framing. That is a more involved repair, especially if trim needs to be removed and reinstalled cleanly.

Adjust the Strike Plate After the Door Is Level

A door can be physically straight but still fail to latch because the strike plate no longer lines up with the latch bolt. Always correct the sag first, then test the latch. Moving the strike plate before fixing the hinges can mask the actual issue and leave the door rubbing elsewhere.

If the latch hits slightly above or below the strike opening, loosen the strike plate screws and reposition it if there is enough room. For a small adjustment, enlarge the opening in the direction needed with a metal file, then tighten the plate. If the strike plate needs to move more than a small amount, fill the old screw holes with glued toothpicks or a dowel before drilling new pilot holes.

Test the door several times. It should close with normal hand pressure, latch without lifting or pushing the door, and stay closed without rattling.

When Sanding or Planing Is the Right Fix

Sanding or planing should be the last step, not the first. Removing material from the door can permanently change its fit, and it will not solve loose hinges or a shifting frame.

That said, wood doors can swell during humid Ohio summers or after exposure to a bathroom, laundry area, or water leak. If the hinges are secure and the frame is square, mark the rubbing area with painter's tape or pencil. Remove the door, sand or plane a small amount from the affected edge, and test the fit often.

Seal and repaint any bare wood after trimming. Unsealed wood absorbs moisture more easily, which can bring the problem back during the next humid season. Hollow-core doors require extra caution because there is limited solid material around the edges. Remove only a small amount at a time.

Common Mistakes That Make Door Repairs Worse

The fastest-looking fix is not always the right one. Shimming behind a hinge can sometimes help with alignment, but it can also make a hinge sit proud and change the door swing. It is best used when the hinge mortise was cut too deep, not as a default fix for sagging.

Do not bend hinges while they are installed. This can crack paint, damage the hinge, and create uneven movement. Replacing a visibly bent or worn hinge is usually inexpensive and more reliable.

Also avoid forcing a sticking door shut. Repeated force can loosen the top hinge further, wear down the latch, and damage the jamb. For rental properties, address a sagging door promptly between tenants or during a maintenance visit. Small door adjustments are far less costly than repairing damaged trim, flooring, or a split jamb later.

When to Call a Professional

A straightforward hinge repair is a practical DIY project for many homeowners. Call for help when the jamb is loose, the wall around the frame is cracked, the door has water damage, hinges have pulled out repeatedly, or the door needs trimming and refinishing. These signs can point to a framing, moisture, or installation issue beyond a simple adjustment.

For Dayton-area homeowners, landlords, and property managers, NovaCraft Construction can diagnose the cause, correct the alignment, and take care of related trim, drywall, paint, or maintenance repairs in the same visit. A door should close quietly and reliably without a lift, shove, or scrape - and restoring that simple function is often a smaller repair than it first appears.