How to Repair a Loose Table Leg Joint

A loose table leg magnifies stress through rails, corner blocks and the top. Continued use can split tenons and remove original wood.

Diagnose before intervention

Identify mortise-and-tenon, dowel, screw-in, bolted or pedestal construction. Determine whether only one joint failed or the entire underframe is racking.

• Check tenons for fracture or loss.
• Inspect corner blocks and old screws.
• Look for failed glue and contamination.
• Test top fixings and frame square.
• Record leg orientation and numbering.

Do not begin by adding glue or removing wood. Photograph construction, marks, fittings and earlier repairs. Establish whether movement is caused by failed adhesive, fractured timber, distortion, humidity, overload or a later incompatible repair.

Materials and construction

Many tables rely on the geometry of the entire underframe. Repairing one joint while the frame is twisted can lock in distortion.

Original irregularity is not automatically damage. Hand and machine methods overlapped, and components may have been replaced during a long working life. Preserve evidence and describe change honestly.

Conservation-minded method

Dismantle only joints that have genuinely failed. Remove loose adhesive without widening the joint, repair lost tenon material with matching wood, use compatible glue and clamp the complete frame square.

Dry-fit and rehearse clamping before adhesive is introduced. Protect finished surfaces with clean barriers and shaped cauls. Use the least pressure needed for alignment. Remove squeeze-out safely and allow a full cure before loading.

Mistakes to avoid

• Injecting glue into a dirty moving joint.
• Adding visible angle brackets.
• Driving screws through tenons.
• Clamping against unsupported veneer.
• Using the table before cure.

Final checks and future care

Check diagonal measurements, floor contact and top alignment. Add load gradually.

If the piece has exceptional provenance, complex veneer or paint, major loss, severe distortion, active mould or uncertain earlier adhesive, consult a furniture conservator.

Sources

The approach follows traditional construction evidence described by the [V&A](https://www.vam.ac.uk/articles/furniture-how-was-it-made) and conservation principles from the [Canadian Conservation Institute](https://www.canada.ca/en/conservation-institute.html).