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FAQs

Why Does My Day and Night Blind Mechanism Make Noise

Quick Answer

  1. Identify which part of the mechanism is making the noise (cord, roller tube, bracket, or bottom rail) before touching anything else.
  2. Clean the roller tube and brackets with a dry cloth to remove dust and debris caught inside the mechanism.
  3. Lubricate the end caps and bracket clips with a small amount of dry PTFE spray, not WD-40.
  4. Recheck the blind after each adjustment so you can tell exactly when the noise stops.

Day and night blinds make noise for two main reasons: something is rubbing against something it shouldn’t be, or the mechanism has dried out and needs lubricating.

Most cases are a five-minute fix.

You don’t need to replace the blind or call anyone out.

What You’ll Need

Tools

  • Small flathead screwdriver
  • Soft dry cloth or microfibre cloth
  • Step ladder or stool if the blind is high

Materials / Replacement Parts

  • Dry PTFE lubricant spray (not WD-40, not silicone oil)
  • Replacement end caps if yours are cracked or broken
  • Replacement cord if the pull cord is frayed or twisted

How to Fix It: Step-by-Step

Step 1: Find Where the Noise Is Coming From

You can’t fix a noise you can’t locate. Lower and raise the blind slowly while listening carefully, because the sound usually peaks at a specific point in the travel.

  • Listen for a clicking or ticking noise: usually the cord catching on the tube or a bracket
  • Listen for a grinding or scraping sound: the tube is catching on the end cap or wall bracket
  • Listen for a rattling: the bottom rail or chain weight is loose and knocking against the fabric or window frame
  • Listen for a creaking or squeaking: the mechanism is dry and needs lubricating

Step 2: Clean the Mechanism

Dust and fluff get into the roller tube more than people expect, particularly in kitchens and living rooms. A dirty mechanism wears faster and makes more noise.

  1. Take the blind down from its brackets
  2. Wipe the roller tube end caps with a dry cloth, getting into the lip where the cap meets the tube
  3. Check the brackets for built-up debris and clear them out with a flathead screwdriver if needed
  4. Don’t use water near the mechanism. If the blind itself needs a wipe, keep it away from the end caps

Step 3: Lubricate the Moving Parts

This is the fix that works most of the time. Day and night blinds have a simple roller mechanism, and the end caps are the main friction point.

  1. Hold the blind over a sink or sheet of paper before spraying anything
  2. Apply a short burst of dry PTFE spray directly onto each end cap where it meets the bracket
  3. Rotate the tube by hand a few times to work the lubricant in
  4. Don’t use WD-40. It attracts dust, gums up over time and will make the problem worse within a few weeks

Step 4: Rehang and Test

Put the blind back in its brackets and run it through its full range of movement a few times. Raise it fully, lower it fully, and stop it at the midpoint where the stripes align.

  • If the noise is gone, you’re done
  • If there’s still a faint catch at one specific point, check the cord routing. The cord should sit in the centre of the tube, not rubbing against an end cap
  • If it’s still grinding after lubricating, the end cap is likely cracked or worn and needs replacing. These are inexpensive parts and easy to swap out

Still have questions?