Why has the soft close stopped working on my cupboards and drawers?

Whether the damper has failed, been switched off, or is simply being overwhelmed — and how to adjust the damping rather than replace the hinge.

Difficulty: beginner
Time: 20 min
Read: 4 min

Short answer

Check for a switch first: many soft-close hinges have a small lever marked I and II, or a numbered dial, that turns damping up, down or off, and it gets knocked. If the damping is on and the door still bangs, the damper's oil seal has gone and the damper is replaced — usually as a clip-on part costing a couple of pounds, not the whole hinge.

A soft-close damper is a small cylinder of oil with a piston in it. It has a finite life, it is affected by temperature, and on most hinges it is deliberately adjustable, because a light door and a heavy door need different damping. Most complaints about soft close are one of those three things rather than a failure.

What you'll need

A torch
Replacement clip-on damper, if needed (optional)
Small screwdriver (optional)

Step by step

Find out where the damping actually lives.On a modern hinge it is built into the cup body. On an older one it is a separate cylinder clipped onto the arm. On drawers it is inside the runner at the back, or in a separate unit clipped to the runner. Identify which before diagnosing.
Look for the adjustment switch.Many hinges carry a small lever or wheel on the arm marked with numbers, or with symbols for light and heavy doors. Slide or turn it and close the door to compare. This gets knocked while cleaning far more often than anything fails.
Check the door has not been overloaded.A spice rack or a stack of chopping boards hung on the inside of a door adds weight the damper was set for without. Turn the damping up, or move the weight.
Test the damper by hand.Take the door off and press the damper piston in with a thumb. A working damper resists steadily and pushes back slowly. A failed one collapses with no resistance, or feels gritty and uneven.
Look for oil.A film of thin oil on the hinge arm or on the carcass under it means the damper's seal has gone. That damper is finished and no adjustment will bring it back.
Replace the damper rather than the hinge, if you can.Clip-on dampers are a standard part. If the damping is integral to the hinge, the whole hinge is replaced — but check first, because many hinges that look integral have a serviceable cartridge.
For drawers, work out whether it is the damper or the runner.Pull the drawer fully out and push the runner closed by hand alone. If the runner itself glides in and softens at the end, the mechanism is fine and the fault is elsewhere. If it slams, the damper in the runner has failed and the runner is replaced as a unit on most systems.
Check whether the drawer is simply being closed too hard.Soft-close runners have a catch speed above which they cannot absorb the energy, and slamming a heavy drawer will beat any of them. That is not a fault.

Tips

Soft close feels weaker in a cold kitchen, because the oil is thicker and the mechanism engages differently. A conservatory kitchen or an unheated utility genuinely does behave differently in January.
If one door in a run bangs and the rest are fine, it is that door's damper, not a systemic problem. Swap the damper with a neighbouring door to confirm before buying anything.
Push-to-open and soft close fight each other on the same door unless the mechanism was designed to do both. If you have added one to a door that had the other, that is likely the problem.

If it doesn't work

Door bangs shut with no cushioning at all

Cause: Damper switched off, or oil seal failed — Fix: Check the adjustment lever first. If it is on, press the piston by hand — a collapsed piston means a new damper.

Door closes softly but does not fully latch

Cause: Damping set too high for a light door, so the hinge spring cannot finish the job — Fix: Turn the damping down a step, or check the depth adjustment on the hinge so the door does not have to fight a tight fit as well.

Drawer soft-closes but bounces back open

Cause: Runner not fully engaging its catch, usually because the drawer is loaded heavily at the front — Fix: Redistribute the load towards the back, and check both runners are level and at the same height.

Soft close works when empty and slams when loaded

Cause: The damper is at the limit of what it can absorb — Fix: Turn the damping up if adjustable, or fit heavier-rated runners or hinges. On drawers, check you are not over the runner's weight rating.

Questions people ask

Can soft close hinges be repaired?

The damper is the part that fails, and on many hinges it is a separate clip-on component that can be replaced on its own for a couple of pounds. Where the damper is sealed into the cup, the hinge is replaced.

Can I add soft close to my existing kitchen?

Yes. Clip-on dampers fit onto the arm of most standard 110 degree concealed hinges without changing the hinge. Drawers are harder — soft close on a drawer is usually built into the runner, so it means new runners.

Why does one cupboard door bang and the others do not?

Almost always that door's own damper, either switched down or failed. Swap it with the damper from a quiet door — if the problem follows the damper, you have your answer.