A hinge almost never fails as a hinge. What fails is the few millimetres of board the screws are biting into, and once that grip is gone the door starts carrying its weight on two screws instead of six. Whether this is a twenty minute fix or a sign the shutter has outlived its carcass comes down to what the screw hole feels like when you back a screw out.
Why Do Kitchen Hinge Screws Lose Their Grip?
Because a screw in engineered board holds by compressing the material around it, and that compression is finite. Every time the door swings, the hinge transfers the door's weight into those screw holes as a small rocking load. Thousands of cycles later, the material around the screw has been worked loose and the thread no longer has anything to bite.
Three things accelerate it, and all three are more common in a kitchen than anywhere else in a flat.
- Door weight. A thick shutter, a glass insert or an applied profile all add load the hinge was possibly not rated for
- Moisture in the board. A slightly swollen core grips far worse than a dry one, which is why hinges under a sink go first
- Too few hinges. A tall shutter on two hinges puts roughly half again the load into each one compared with three
The hinge body itself usually outlasts all of this. It is worth checking before you buy new hinges that the old ones are actually the problem.
Is It the Screw Hole, the Hinge, or the Board?
Back one screw out by hand and look at what comes with it. This takes a minute and separates three very different situations.
| What you find | What it is | What it needs |
|---|---|---|
| Clean screw, hole slightly oversized, board firm | Worn screw hole | Hole repair. Holds well |
| Screw comes out with board dust and fibres | The hole has stripped | Hole repair, larger fill |
| Hole is damp, soft, or the board flakes away | The board has failed locally | The panel needs replacing |
| Hinge cup loose in its recess | The shutter side has gone, not the carcass | New shutter, or move the cup |
| Screws tight, door still drops | Hinge mechanism worn | New hinges only |
The last row is worth knowing about. If the screws are solid and the door still sags, replacing hinges alone fixes it, and that is the cheapest outcome available in kitchen repair work.
Which Hinge Repairs Actually Last?
There is a clear hierarchy here, and knowing it stops you paying for the version that fails again by next monsoon.
| Repair | How long it holds | When it is right |
|---|---|---|
| Longer or thicker screw | Weeks to months | Only as a stopgap before proper work |
| Matchsticks or toothpicks in the hole | Months | Not worth doing on a kitchen door |
| Hardwood dowel glued into a drilled hole, re-drilled | Years | The correct repair on sound board |
| Moving the hinge position by a few millimetres | Years | Where the original hole cannot be saved |
| Adding a third or fourth hinge | Years | Tall or heavy shutters that were under-hinged |
| Replacing the shutter | Full life | Where the cup recess itself has broken up |
A dowel repair works because it replaces worked-out board with solid timber that a screw can bite into properly. The two quick fixes at the top of the table do not do that, which is why they come back.
Why Do the Hinges Under the Sink Always Go First?
Because that cabinet lives in a different climate from the rest of the kitchen. Damp air sits inside it, the board is never fully dry, and a screw in slightly swollen board has a fraction of the grip it would have in a dry panel.
If the hinges under your sink are loose and the rest of the kitchen is fine, treat it as a moisture finding rather than a hardware finding. Check the base panel underneath while you are there, because the same damp that cost you the screw grip has very likely reached the bottom of the carcass too, and that is a more consequential problem. Our guide on swollen kitchen base panels covers what to look for.
One thing to settle before any woodwork: if there is an active leak from the plumbing, that has to be fixed first by a plumber. Replacing a panel under a tap that is still dripping means replacing it again. Plumbing is outside our scope and it comes before us, not after.
What Hinge Specification Prevents This?
Four things, and none of them is the brand name on its own.
- The hinge model and its load rating, matched to the actual weight of your shutter. A brand name alone is not a specification, because every major manufacturer sells ranges at very different performance points
- Hinge count by shutter height, written into the quotation. Three on a tall shutter rather than two is a small cost that removes the commonest cause of this failure
- Board grade at the fixing points, because grip is a property of the board rather than the hardware
- Stainless or treated fixings in the sink and utility runs, where ordinary screws corrode and then seize
If you are getting quotations, ask for the model number and the count per unit rather than a brand. What a woodwork quotation must say sets out why that one line changes what you can hold a firm to.
When Is Repairing Hinges Not Worth It Any More?
When you are repairing them one at a time across a whole kitchen. A single loose hinge is a repair. Five loose hinges across four cabinets is the kitchen telling you the fixing material has reached the end of its working life, and fixing them individually means doing it again next year on a different door.
At that point the sensible comparison is not repair against replacement. It is repair against a hardware and shutter upgrade over the existing carcass, which is usually the better value if the boxes are still sound, and which is why the carcass check matters before any decision gets made.
There is also an upgrade worth considering while the doors are off. If the hinges are being replaced anyway, moving to soft close costs little more than replacing like for like and removes the slamming that loosens screws in the first place. That is covered in upgrading an existing kitchen to soft close.
Frequently Asked Questions
Why do my kitchen cabinet hinges keep coming loose?
The hinge is rarely the problem. What fails is the board the screws bite into. A screw in engineered board grips by compressing the material around it, and every door swing works that material a little looser until the thread has nothing left to hold.
How do I tell if the board has failed or just the screw hole?
Back one screw out by hand. A clean screw and a slightly oversized but firm hole is a worn hole and repairable. Board dust and fibres coming out with the screw means it has stripped but is still repairable. A damp, soft hole where the board flakes away means the panel itself has failed.
Does putting a longer screw in work?
For weeks or months, as a stopgap. It finds fresh material deeper in, but that material gets worked loose the same way. The repair that actually lasts is gluing a hardwood dowel into a drilled hole and re-drilling it, because that replaces worked-out board with timber a screw can grip.
Do matchsticks in the hole fix a loose hinge?
Not on a kitchen door. It can hold for a few months on a light, rarely used door, but a kitchen shutter opens many times a day and carries real weight. It is not worth the time compared with a proper dowel repair.
Why are the hinges under my sink the loose ones?
That cabinet sits in damp air permanently, so the board is never fully dry, and a screw in slightly swollen board has a fraction of its proper grip. Treat it as a moisture finding and check the base panel underneath, because the same damp has probably reached it.
My screws are tight but the door still sags. What now?
Then the hinge mechanism itself is worn and new hinges alone will fix it. This is the cheapest outcome available in kitchen repair work, which is why it is worth checking before assuming the board has gone.
How many hinges should a kitchen shutter have?
It depends on height and weight rather than a single rule, and it should be written into the quotation along with the hinge model and its load rating. A tall shutter on two hinges puts roughly half again the load into each one compared with three, which is the commonest avoidable cause of this failure.
When should I stop repairing hinges and do something larger?
When you are repairing them one at a time across the whole kitchen. One loose hinge is a repair. Five across four cabinets means the fixing material has reached the end of its life, and the better comparison then is a hardware and shutter upgrade over the existing carcass.
Key Takeaways
- Hinges rarely fail. The board the screws bite into is what fails.
- Back a screw out by hand. What comes out with it tells you which repair applies.
- Longer screws and matchsticks buy weeks. A glued hardwood dowel lasts years.
- Tight screws with a sagging door means worn hinges, which is the cheapest outcome.
- Hinges under the sink go first because damp board grips a screw far worse.
- An active plumbing leak has to be fixed before any woodwork, by a plumber.
- Hinge count by shutter height belongs in the quotation, not left to the fitter.
- Repairing five hinges across four cabinets means the fixing material is finished.
If hinges are going across several cabinets, the next question is whether the carcass is still sound. Run the kitchen carcass check, or see kitchen hardware replacement in Bangalore.