How to Fix a Sagging Door: Easy DIY Steps, Tools, and Expert Tips (2026 Guide)

A sagging door is a common household problem that can make opening and closing a door frustrating. You might notice the door rubbing against the floor, scraping the doorframe, sticking near the top corner, or failing to latch properly. Fortunately, many sagging doors can be repaired with a few basic tools and some careful adjustments.

Learning how to fix a sagging door can save you money on professional repairs and help prevent further damage to the hinges, frame, and flooring. The key is to identify why the door is sagging before tightening screws or replacing hardware. Loose hinges, short screws, worn hinge holes, a misaligned frame, and excessive door weight are among the most common causes.

This 2026 DIY guide explains how to diagnose a sagging door, tighten or repair its hinges, correct alignment problems, and determine when professional assistance is necessary.

What Causes a Door to Sag?

Before attempting a repair, inspect the door carefully. A door usually sags because its weight is no longer being supported evenly by the hinges or because the frame has shifted.

Common causes include:

• Loose hinge screws: Repeated opening and closing can loosen screws, allowing the door to drop slightly.
• Short screws: Small screws may not grip the structural wood behind the doorframe securely enough to support a heavy door.
• Stripped screw holes: Screws can spin without tightening when the surrounding wood has worn away.
• Worn or damaged hinges: Bent hinge leaves, worn pins, or damaged bearings can prevent the door from hanging correctly.
• Door or frame movement: Seasonal changes in humidity, settling, or structural movement can affect alignment.
• Excessive weight: A heavy solid-wood door or a door carrying an added mirror or other attachment can put extra stress on its hinges.

Look for visible gaps around the door. If the gap is larger at the top on the latch side, the door may have dropped toward that corner. If the door rubs along the floor, the cause could be sagging, a warped door, or a flooring change.

Important: If the doorframe is visibly cracked, the wall is moving, or the door is unusually heavy, investigate the underlying problem before attempting a simple hinge adjustment.

Tools and Materials Needed to Fix a Sagging Door

Most basic door repairs require only a few household tools. Gather your supplies before starting so you can complete the job without repeatedly removing and reinstalling hardware.

You may need:

• A Phillips or flathead screwdriver that matches your screws
• A drill and suitable driver bits
• Longer wood screws, if the frame and hinge design permit them
• A level or straightedge
• Wooden toothpicks or small wood dowels for repairing stripped holes
• Wood glue suitable for the repair
• A utility knife and sandpaper, if minor trimming is necessary
• A door wedge or wooden blocks to support the door
• Safety glasses and a suitable drill bit

For a standard interior door, start with a screwdriver rather than immediately using a power drill. Excessive force can strip screw heads or damage the wood.

Safety tip: Doors can be surprisingly heavy. Support the door before removing hinge screws, and ask another person for help if the door is large, solid-core, or difficult to control.

How to Fix a Sagging Door by Tightening the Hinges

The easiest solution is often tightening the existing hinge screws. This should be your first repair attempt if the hinges appear intact and the screw holes are not damaged.

Step 1: Inspect the hinge screws. Open the door and examine each hinge. Look for loose screws, gaps between the hinge leaf and the frame, or screws that sit unevenly.

Step 2: Support the door. Place a wedge under the door near the latch side to take some of its weight off the hinges. Adjust the wedge gently until the door is supported without being forced upward.

Step 3: Tighten the screws. Use the correct screwdriver to tighten the screws on the door and frame sides of each hinge. Work carefully and avoid overtightening.

Step 4: Test the door. Remove the wedge and open and close the door several times. Check whether it latches correctly and whether the gaps around the door are more even.

If the door still sags, inspect the top hinge closely. The top hinge often carries a substantial portion of the door’s load, so loose or ineffective screws there can cause the latch-side corner to drop.

If tightening the screws does not solve the problem, do not keep forcing them. A stripped hole, damaged hinge, or misaligned frame may require a different repair.

How to Fix a Sagging Door With Longer Screws

If the screws are tight but the top hinge still pulls away from the frame, replacing one or more suitable screws with longer screws may help. Longer screws can reach the structural framing behind the doorjamb instead of relying only on the thin layer of wood at the surface.

First, check the hinge manufacturer’s guidance and the thickness and condition of the frame. Choose screws with the correct diameter and head style for the hinge. A screw that is too large or has the wrong head may damage the hinge or prevent it from sitting flat.

With the door supported, remove one screw at a time from the appropriate hinge location and replace it with a compatible longer screw. Tighten it gradually while watching the hinge and door alignment. Avoid overtightening, which can pull the hinge out of position or damage the jamb.

Longer screws are not a universal solution. They may be unsuitable for some metal frames, hollow or damaged jambs, and certain fire-rated door assemblies. Do not drill into concealed wiring or plumbing, and avoid making modifications that could compromise a fire door’s certified installation.

After making the adjustment, remove the support and test the door. If the door remains misaligned, move on to checking the screw holes and hinge condition.

How to Repair Stripped Hinge Screw Holes

When a screw spins without tightening, the wood around its threads may have deteriorated. Repeatedly turning the screw will not restore its grip. A simple repair is to rebuild the hole with wood material.

For a small hole in a solid-wood door or jamb, remove the loose screw and support the door. Apply suitable wood glue to several wooden toothpicks or a small wooden plug, then insert the material into the damaged hole. Trim any excess carefully and allow the glue to cure according to the manufacturer’s instructions.

Once the repair has hardened, make a small pilot hole if needed and reinstall the screw. The screw should grip the repaired wood firmly without splitting it.

For larger or badly damaged holes, a properly fitted wood dowel or a more substantial wood repair may be necessary. If the jamb is split, crumbling, or pulling away from the wall, simply filling the screw hole may not be enough.

Avoid relying on soft filler alone to support a heavily loaded hinge. The repair must provide a secure mechanical grip for the screw.

How to Adjust Hinges and Fix a Door That Rubs

If the screws are secure but the door still rubs against the frame, inspect the hinge alignment and the shape of the gaps. A door that rubs only near one corner may need hinge adjustment, while rubbing along a large section of the edge could indicate a warped door or shifted frame.

Check that each hinge leaf sits flat against the door and jamb. A bent hinge, loose pin, or damaged bearing may require hinge replacement. Use hinges compatible with the door’s weight, dimensions, and existing hardware.

For a minor alignment problem, tightening or correcting the mounting position may restore a more even gap. Do not bend hinges or remove wood unnecessarily before confirming the source of the problem. Planing or sanding the door edge should be a last resort after correcting loose hardware and verifying that the frame is sound.

If the door scrapes the floor, check whether the flooring has changed or whether the hinges have allowed the door to drop. Trimming the bottom edge may help in some cases, but it will not fix a loose hinge or a shifting frame.

For a door with spring hinges, concealed hinges, specialty hardware, or a fire-rated label, follow the manufacturer’s adjustment instructions rather than applying a generic repair method.

How to Prevent a Sagging Door and When to Call a Professional

Regular maintenance can reduce the chance of the problem returning. Inspect hinges periodically, tighten loose screws before they damage the holes, and avoid hanging heavy accessories from the door without checking whether the hinges can support the additional load.

Keep the door and frame dry, especially in bathrooms, basements, and other humid areas. Moisture can cause wood to swell, while changes in humidity can contribute to seasonal sticking. Use hardware suitable for the door’s size and weight whenever replacing hinges.

Call a qualified carpenter or door technician if the door is extremely heavy, the frame is cracked, the hinges are bent, the door remains badly misaligned after basic repairs, or the surrounding wall appears to be moving. A professional should also assess problems involving fire-rated doors, metal frames, security doors, or doors with specialized hardware.

In conclusion

Fixing a sagging door usually starts with a careful inspection and tightening loose hinge screws. If that does not work, longer compatible screws, repairs to stripped holes, or replacement of damaged hinges may restore proper alignment. By identifying the actual cause and avoiding unnecessary trimming, you can often make the door open, close, and latch smoothly again.