Loose Bolts and Wobbly Chairs: Quick Structural Checks
Rock the table once before you touch a single bolt—where it moves tells you more than any spanner will. A lot of budget garden furniture sold in the UK looks like a tightening job but isn’t, and going in with a spanner on the wrong cause is how a five-minute wobble turns into a write-off. Three checks—floor, fixings, frame—tell you which one you’re actually dealing with, and which one to leave alone.
Start With the Floor
Move the table to a different spot on the patio and rock it again. If the wobble follows the table, the problem is in the furniture. If it stays exactly where it was, the floor is uneven—and that’s the cheapest possible outcome.
This comes up a lot with older patios where paving slabs have settled or tilted over time. One leg finds a dip, the others sit proud, and the whole thing rocks. The fix is straightforward: adjustable feet under the short leg, or a thin shim—a folded coin works in a pinch, though a rubber or plastic pad holds up better long-term. There’s no way to get this test wrong, and it rules out a good number of “wobbly furniture” complaints before anyone’s touched a bolt.
Then Check the Fixings—Properly
If the wobble follows the table, check the fixings next. Most people do this wrong: they push down on each corner. Push the tabletop sideways instead, in the direction of each leg in turn, and press down on one corner at a time. You’re feeling for whether the top moves independently of the base. If it does, the fixings holding the tabletop to the frame have worked loose—and that produces a wobble that feels exactly like a leg problem but isn’t.
Clear dust, grit or debris from the fixing points with a dry cloth before you tighten anything. Then tighten gradually and evenly, alternating between bolts rather than doing one up fully before moving to the next. Over-tightening into a plastic insert—common in budget furniture—can strip the thread and leave you with a worse problem than the wobble you started with. Tighten until firm, not until it stops turning.
Why Tightening Can Break a Welded Frame
Here’s the step most guides skip, and it’s the one that causes the most DIY damage. Before you reach for a spanner at all, find out whether your frame is bolted or welded.
📺 Watch: How To Fix A Wrought Iron Chair — DIY Homefront
Most budget garden furniture—steel-framed tables and chairs sold through high-street retailers and online marketplaces—uses welded frames, not bolted ones. There’s no bolt to tighten on a welded frame; the joint is fused. Look at where the legs meet the frame: visible bolts and separate components mean bolted, a seamless join means welded.
That distinction matters because a wobble in a welded frame isn’t coming from a loose bolt—it’s the weld joint itself giving way. The frame has twisted, or the weld has cracked under load. Tightening a bolt on a welded frame just transfers load onto the compromised joint, and that extra stress is exactly what cracks a weld the rest of the way. Even without a visible crack, a frame that’s noticeably twisted or leaning has already taken a hit it wasn’t built for—that’s still a call for an expert eye, not a wrench.
If the frame is welded and wobbling, treat the furniture as structurally compromised. This isn’t a tightening problem—it’s a professional-repair-or-replace situation. A local metalworker can tell you whether a weld is salvageable, but for most budget sets, professional frame repair costs enough that it changes the maths against the set’s original price. The honest call with a welded frame that’s developed a wobble is to stop tightening and choose between repair and replacement, not to push on.
Repair or Replace?
Once you’ve worked out the cause—floor, fixings, or frame—the repair-or-replace call is straightforward, and it depends on the furniture type.
📺 Watch: How to Repair Outdoor Wood Furniture & Fix Rotten Wood — Fixing Furniture
For bolted frames with quality components, repair kits are genuinely worth it. You’re mostly paying for hardware—bolts, washers, sometimes a bracket—not a rebuild, and prices vary enough between suppliers that it’s worth comparing a couple of DIY restoration kits rather than assuming one figure. If the frame is solid and the joints are intact, that’s money well spent: you’re extending the life of furniture that was built to be maintained. For a set from a reputable brand with a known frame type, repair is usually the right call.
For welded frames, the maths shifts. Getting a professional to assess or repair a cracked weld typically costs more than a straightforward bolt swap, and for a budget set that’s already a few years old, that bill can get close to—or past—what a replacement would cost. The rule of thumb holds regardless of the exact figures: don’t spend more on a repair than the furniture is worth. If your set is several years old and came from a budget retailer, that arithmetic usually points toward buying new rather than chasing a weld repair.
Age and build quality should drive this decision as much as the repair cost itself. A well-made bolted frame from a known brand is worth investing in. A budget welded frame that’s developed a wobble is telling you something, and it’s usually “I’m done.”
Frequently Asked Questions
Can I use wood glue to fix loose joints?
For bolted frames, yes—wood glue can reinforce a loose joint before you tighten the bolts back up. Clean the joint, apply the glue, then tighten once it’s started to set. Don’t rely on glue alone without the bolt; it needs the mechanical fix as well. If the frame is welded, glue won’t help at all.
How do I know if my frame is welded or bolted?
Look at where the legs meet the frame. Bolted frames have visible fasteners—you’ll see bolts or screws at the joint. Welded frames have no seam at all; the leg flows into the frame as one piece. No visible fasteners and continuous-looking metal means welded.
Will a shim fix a wobbly table for good?
Depends entirely on what’s causing the wobble. Shims correct an uneven floor—if the table sits on paving slabs that have settled, a shim under the short leg solves it permanently. But if the wobble is coming from loose fixings or a compromised frame, a shim just masks the problem. It’ll still rock, and the underlying issue gets worse underneath the fix.
Run the Checks, In This Order
- Floor—move the table, rock it again. Moves with it? Furniture. Stays put? Floor.
- Fixings—push the tabletop sideways at each leg. Top shifts independently of the base? Loose fixing, not a leg problem.
- Frame—look at the leg-to-frame joint. Visible bolts, tighten with care. No seam at all, it’s welded—and a welded frame that wobbles needs a professional opinion or a replacement, not a spanner.
That third check is the one that catches people out, because it’s the one where tightening makes things worse rather than better. If you’re at all unsure whether you’re looking at a weld or a bolt, or you can see any crack, stop and get a professional opinion before you apply any force—a chair that fails under someone is a far more expensive mistake than a wobble.
Related Guides
For a complete overview, see our Garden Furniture Repair: When It’s Worth It UK Guide.
Now you know what to look for—Get the Free Garden Furniture Care Checklist to catch these issues before they start.