Quick answer: First work out whether the wobble is structural or caused by an uneven floor by moving the table to a different spot. If the wobble travels with it, the fault is in the legs or joints. Tighten all screws and bolts first, then add shims or adjustable levelling feet if tightening alone does not fix it. For badly worn joints, disassemble, clean off old glue, and reglue with wood glue and clamps.
A wobbly table or chair is rarely worth throwing out, since the underlying cause is almost always one of a small handful of straightforward issues. Working through the diagnosis properly before reaching for tools saves you fixing the wrong thing and having the wobble return within days.
Step 1: Diagnose Floor vs Structural Wobble
This is the single most important step, since it determines everything that follows.
- Place the table or chair on a hard, level surface if possible.
- Gently rock it to identify which leg or legs lift off the ground.
- Move the item to a different spot in the room, or a different room entirely, and test again.
- If the wobble travels with the furniture, the problem is structural, in the legs or joints. If the wobble disappears or changes character in a new spot, the floor itself is uneven rather than the furniture.
A thin piece of cardboard or paper slid under each leg in turn can help pinpoint exactly which leg is short or causing the imbalance.
What You Will Need
- Screwdriver and Allen key, matched to your furniture’s fixings
- Wood glue (polyurethane or epoxy for a strong bond)
- Clamps
- Sandpaper
- Cardboard or felt shims
- Adjustable levelling feet or L-shaped metal brackets, if needed
Step 2: Tighten Loose Screws and Bolts
This resolves the majority of wobbles and should always be your first practical step.
- Turn the table or chair upside down, or lay it on its side, to access the legs and frame easily.
- Inspect every screw and bolt, paying particular attention to the joints where legs meet the tabletop or seat frame.
- Tighten anything loose with the appropriate screwdriver or Allen key.
- If a screw hole is stripped and will not hold, fill it with wood glue and a toothpick or matchstick, let it dry, then reinsert the screw into the now-solid hole.
- Recheck stability once reassembled and back on its feet.
Step 3: Fix a Genuinely Uneven Floor
If your diagnosis in Step 1 pointed to the floor rather than the furniture, tightening screws will not help.
- For fixed legs without adjustment, cut small pieces of cardboard or felt to size and place them under the shorter leg or legs.
- For furniture with adjustable feet, twist them to raise or lower each leg until the piece sits level and stops rocking.
- If the item does not have adjustable feet, self-adhesive adjustable levelling feet or furniture pads can be fitted to the base of each leg.
Step 4: Reglue Loose Joints
If tightening screws does not resolve the wobble, the joints themselves have likely loosened internally and need regluing.
- Carefully disassemble the affected joint, twisting the leg gently to break any remaining old glue bond.
- Label each piece as you remove it, so everything goes back in exactly the right place.
- Use a small chisel to chip out old, hardened glue from inside the joint.
- Sand the inside of the joint and the end of the leg lightly to expose clean, raw wood, since glue bonds far better to bare wood than to old glue residue.
- Apply a generous, even layer of polyurethane or epoxy wood glue to both surfaces of the joint.
- Reassemble and clamp tightly, wiping away any excess glue that squeezes out before it dries.
- Leave clamped for the full curing time stated on the glue’s packaging before using the furniture again.
Step 5: Reinforce With L-Brackets
Older furniture sometimes loses its grip on screws entirely, even after refilling stripped holes, particularly where the wood itself has become worn or slightly soft at the joint.
- Purchase L-shaped metal brackets, at least four for a four-legged table, checking whether suitable screws are included or need buying separately.
- Position each bracket at the intersection between the leg and the tabletop or frame.
- Screw firmly into place, checking the bracket sits flush and does not obstruct the leg’s movement or the tabletop’s underside.
This method is particularly effective for older tables and chairs where screws alone are no longer holding the joint securely.
Preventing Future Wobbling
- Never drag a table or chair across the floor. Dragging puts strong sideways force through every leg joint and is one of the largest single causes of joints loosening over time. Lift furniture, or fit sliders and push gently with the load supported instead.
- Avoid leaning heavily on the edge of a table or the arm of a chair, since this concentrates weight at a single point rather than spreading it evenly, which opens joints faster than normal use.
- Check and tighten fixings roughly once a year as routine maintenance, catching loosening early before it develops into a full wobble.
- Distribute weight evenly across a table’s surface rather than repeatedly loading one corner or edge.
When Replacement Makes More Sense Than Repair
Some furniture was simply never quite right from new, with a tabletop that was too thin or a base that racked out of square from the start, and these tend to keep returning to the same fault no matter how many times you reglue or tighten. If you find yourself fixing the same joint repeatedly within a year, it is often more sensible to replace the piece than continue patching a failing frame.
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Frequently Asked Questions
How do I know if my table is wobbling because of the floor or the furniture itself?
Move the table to a different spot and test again. If the wobble travels with it, the problem is structural. If it disappears or changes in the new location, the floor is uneven rather than the table.
What glue is best for fixing loose chair or table joints?
A high-quality polyurethane or epoxy wood glue provides the strongest, longest-lasting bond for structural joints compared with standard household glue.
Can shims fix a wobbly table permanently?
Shims work well as a permanent fix for genuinely uneven floors, but they will not resolve a structural wobble caused by loose joints, which needs tightening or regluing instead.
Why does my table keep wobbling even after I tighten the screws?
This usually means the joint itself has loosened internally beyond what a screw alone can fix, and needs disassembling, cleaning of old glue, and regluing, or reinforcing with L-brackets.
Final Thoughts
A wobbly table or chair is almost always fixable, and the key is correctly diagnosing whether the floor or the furniture is actually at fault before you start tightening or gluing anything. Work through tightening, shimming, and regluing in that order, and reserve full replacement for furniture that keeps failing at the same joint no matter what you try.