Quick summary
The most common noises are squeaks from dry guides, rattling from loose slats or clips, knocking from an unbalanced axle, and a hum from the motor or its capacitor. Don’t grease blindly: an inspection finds the source and prevents bigger damage.
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Identify the type of noise
A high-pitched squeak usually comes from dry or dirty side guides where the slats rub. A rattle or vibration points to worn slats, broken end clips or a loose box. A rhythmic knock suggests an unbalanced axle or a worn bearing. An electrical hum points to the motor or its capacitor.
Most common causes
Over time the guides lose lubrication, the slats and their joints wear, the clips that hold the last slat to the axle snap, and the brackets work loose. On motorised blinds a capacitor at its limit makes the motor hum and push under strain, which speeds up wear on the rest of the parts.
What to avoid and what to check
Do not use cooking oils or thick greases: they attract dust and worsen friction. Do not force the blind once it is noisy, because the vibrating part can end up snapping. It is worth checking guides, slats, clips, axle and, if motorised, the motor and capacitor.
When to call
Call if the noise gets worse, if the blind is harder to raise, if the motor hums while barely moving, or if you hear sharp knocks in the box. Those symptoms usually precede a fault worth stopping in time.
Frequently asked questions
Why does my blind squeak when going up?
Almost always because of dry or dirty side guides where the slats rub. Sometimes also worn slats. A clean and inspection usually fixes it.
Is a noisy motor serious?
A loud hum with barely any movement usually means the capacitor is at its limit. Worth checking before the motor strains and burns out.
Can I grease it myself?
Better not blindly: using the wrong product worsens friction. If the noise persists, an inspection finds the real source.
How much does it cost to fix?
It depends on whether it is a guide clean, new slats or clips, an axle adjustment or the motor. We give a free no-obligation quote before starting.