How to Fix a Sagging Door: A Complete DIY Guide for 2026

A sagging door is a common household problem that can make opening and closing a door frustrating. You might notice that the door rubs against the floor, scrapes the top of the frame, sticks near the latch, or no longer closes properly. Fortunately, many sagging doors can be repaired with a few basic tools and some simple adjustments.

Learning how to fix a sagging door can save you money on professional repairs and help prevent further damage to the door, hinges, and frame. In most cases, the problem comes from loose hinge screws, worn hinges, an uneven door frame, or a door that has gradually shifted out of alignment. The best repair method depends on the cause, so it is important to inspect the door before making adjustments.

This guide explains how to identify the problem, tighten or replace hinges, correct alignment, and determine when a more substantial repair is necessary. With patience and the right approach, you can often restore a door to smooth, reliable operation.

1. Identify Why the Door Is Sagging

Before repairing a sagging door, find out what is causing it. Different symptoms can point to different problems, and identifying the cause helps you avoid unnecessary work.

Start by opening and closing the door slowly. Look for gaps around the edges and notice where the door rubs against the frame or floor. A properly aligned door usually has a reasonably consistent gap around its sides and top, although the exact clearance depends on the door and frame.

Common causes include:

• Loose hinge screws: Screws can gradually loosen through everyday use, allowing the door to drop.

• Worn or damaged hinges: Bent hinge leaves, worn pins, or damaged bearings can prevent the door from hanging correctly.

• Stripped screw holes: Screws may spin without tightening because the wood around them has deteriorated.

• A misaligned door frame: The frame may have shifted because of settling, movement, or previous installation problems.

• Moisture and swelling: Changes in humidity can cause wooden doors or frames to expand, making the door stick.

• Excessive door weight: Heavy solid-wood doors can place extra stress on hinges and their mounting points.

Check whether the door is rubbing at the upper latch-side corner, along the bottom, or against the hinge-side frame. Also examine the hinge screws for movement and look for cracks in the wood. These observations will help you choose the right repair.

2. Gather the Tools Needed to Fix a Sagging Door

Most basic door repairs require only a few household tools. Having everything ready before you begin makes the process easier and reduces the risk of damaging the door.

You may need:

• A screwdriver that matches your hinge screws

• A drill and suitable driver bit

• Longer screws, if the existing screws are too short and the frame can safely accept longer ones

• Replacement hinges, if the current hinges are bent or worn

• A wooden shim or door wedge

• A tape measure and pencil

• A level, if available

• Wood glue and suitable wooden plugs or dowels for repairing stripped screw holes

Choose the correct screwdriver or drill bit to avoid stripping the screw heads. If the door is heavy, ask another person to help support it while you work on the hinges.

Safety tip: Keep your fingers away from the hinge knuckles and pinch points. Do not remove all the hinge screws at once unless the door is safely supported.

3. Tighten the Hinges and Replace Short Screws

The easiest way to fix a sagging door is to tighten the existing hinge screws. Start with the top hinge because it often experiences the greatest strain when a door begins to drop.

Follow these steps:

1. Open the door wide enough to access the hinges comfortably.

2. If necessary, place a wooden wedge under the door to support its weight.

3. Tighten the screws on the top hinge, followed by the middle and bottom hinges.

4. Check the screws on both the door side and the frame side.

5. Remove the wedge and gently close the door to check whether the alignment has improved.

Avoid overtightening the screws, as this can damage the screw holes or pull the hinge out of position.

If the screws are tight but the door still sags, try replacing one screw on the frame side of the top hinge with a longer wood screw. A screw approximately 2½ to 3 inches long may reach the structural framing behind the door jamb, providing a stronger anchor. Check that the screw is appropriate for the hinge and wall construction, and make sure it does not protrude from the hinge leaf.

Drive the screw gradually and check the door’s alignment as you go. Stop once the door closes smoothly and the gaps look even. Over-tightening a long screw can pull the jamb out of alignment. This method is often effective when the existing hinge screws are too short to hold securely.

4. Repair Stripped Screw Holes and Replace Damaged Hinges

Sometimes, tightening a screw does not work because the wood around it has worn away. You may notice that the screw spins freely without becoming tight. This indicates a stripped screw hole, which needs to be repaired before the hinge can hold the door securely.

For a small stripped hole in a wooden door or jamb, use this method:

1. Remove the loose screw while supporting the door if necessary.

2. Clean loose debris from the screw hole.

3. Insert a properly sized wooden dowel or suitable wooden plug with carpenter’s glue.

4. Allow the glue to cure according to the product instructions.

5. Trim the repair flush, then drill a suitable pilot hole.

6. Reinstall the hinge screw and check the door’s alignment.

Wooden toothpicks coated with carpenter’s glue may help with a minor, lightly damaged hole, but a fitted dowel or plug generally provides a more substantial repair. Avoid relying on ordinary soft filler for a screw hole that must support a heavy door.

Next, inspect the hinges themselves. Look for bent hinge leaves, excessive movement around the hinge pin, rust, or visible damage. If a hinge is worn or bent, replace it with a compatible hinge of the correct size and load rating. Support the door during replacement, and replace one hinge at a time when practical.

If the wood is badly split or the hinge screws repeatedly pull out, the frame may need professional repair rather than another screw adjustment.

5. Adjust the Hinges or Door Frame if the Problem Continues

If the screws are secure and the hinges are in good condition, the door may need a small alignment adjustment.

A hinge shim is a thin piece of material placed behind a hinge leaf to change its position. Depending on where it is installed, a shim can help correct uneven gaps and improve how the door meets the frame. Use a purpose-made hinge shim or suitable thin, firm material, and make small adjustments rather than stacking thick pieces.

To make an adjustment:

• Support the door before loosening any hinge screws.

• Identify which hinge needs repositioning by examining the gaps around the door.

• Loosen the relevant screws and position the shim carefully behind the hinge leaf.

• Retighten the screws and test the door.

• Repeat with small changes until the door closes smoothly.

If the latch misses the strike plate after the door has been properly aligned, you may need to adjust the strike plate slightly. However, do not use strike-plate adjustments to hide a door that is still sagging.

A door that rubs only along its bottom edge may be swollen by humidity, warped, or affected by new flooring rather than simply sagging. Check the frame for signs of movement, cracking, or uneven gaps. If the frame is out of square, the solution may require rehanging the door or correcting the frame. Sanding or trimming the door should be a last resort after checking the hinges, moisture, and frame alignment.

6. Prevent Your Door from Sagging Again

Once the door is working properly, a few simple maintenance habits can help prevent the problem from returning.

• Inspect hinge screws periodically: Tighten loose screws before they cause noticeable movement.

• Keep hinges in good condition: Clean and lubricate them when appropriate for the hinge manufacturer’s instructions.

• Avoid hanging heavy objects on the door: Extra weight increases stress on the hinges and frame.

• Manage indoor humidity: Ventilate damp rooms and address leaks that could cause wooden doors or frames to swell.

• Use suitable hardware: Heavy doors may require hinges with an appropriate load rating and secure fasteners.

• Respond to early warning signs: Scraping, uneven gaps, and a latch that suddenly stops working can indicate developing alignment problems.

Regular inspection is particularly useful for frequently used doors, exterior doors, and heavy solid-core doors. Fixing a loose hinge early is generally easier than repairing a badly damaged screw hole or frame later.

Frequently Asked Questions About Fixing a Sagging Door

How do you fix a sagging door quickly?

Start by tightening all hinge screws, especially those on the top hinge. If the door still sags, check for stripped holes and consider replacing one frame-side top-hinge screw with a longer screw that securely reaches the structural framing.

Why does my door scrape the floor?

The door may have sagged because of loose hinges, worn hardware, or a shifted frame. However, swelling, warping, and changes in flooring clearance can also cause scraping. Inspect the hinges and door gaps before sanding or cutting the door.

Can I fix a sagging door without removing it?

Yes. Many sagging doors can be repaired while they remain attached to the frame. Tightening hinge screws and carefully replacing a screw with a longer one are common first steps. More extensive hinge or frame repairs may require additional support or partial removal.

How much does it cost to fix a sagging door?

The cost depends on the cause and the materials needed. Tightening screws may cost nothing if you already have the tools. Replacement screws, shims, or basic hardware are usually inexpensive, while replacing hinges or repairing a damaged frame may cost more. Professional labor adds to the total.

When should I call a professional?

Contact a carpenter or qualified door repair professional if the frame is cracked, the door is unusually heavy, the hinges repeatedly pull loose, or the opening appears to have shifted. Professional help is also advisable when the door is part of a fire-rated assembly or an exterior security system that must maintain its proper fit.

Conclusion

Learning how to fix a sagging door can help you restore smooth operation without replacing the entire door. Start by identifying where the door rubs, then tighten the hinge screws and inspect the top hinge for damage. If necessary, reinforce loose screw connections, repair stripped holes, replace worn hinges, or use a suitable hinge shim to correct minor alignment problems.

The most important rule is to fix the underlying cause before sanding or trimming the door. With careful inspection, appropriate tools, and small adjustments, many common door problems can be resolved with a straightforward DIY repair. If the frame is damaged or the door remains out of alignment, a professional can help ensure the repair is safe and durable.