Location iconLocation: Set Location
iconGet Free Samples
Location Location: Set Location

How to Cut Roller Blinds to Size – A Simple DIY Guide

By Michael Gubby | 2025-06-26 |

Featured Image

Bought roller blinds that don’t quite fit your windows? Don’t stress—cutting roller blinds to size is easier than you might think. Whether you’ve picked up ready-made blinds or inherited old ones, trimming them to fit perfectly is a smart DIY fix that can save both time and money.

At iSeekBlinds, we know the value of getting the perfect fit. That’s why we’ve created this guide to walk you through cutting roller blinds yourself—safely and accurately.

Why Cut Roller Blinds?

There are a few reasons you might want to cut roller blinds at home:

  • You bought a standard-size blind that’s slightly too wide
  • You’re reusing old blinds for a new window
  • You’re after a flush, tidy finish inside a window recess
  • While we always recommend ordering made-to-measure blinds from iSeekBlinds for a perfect fit, cutting existing blinds is a good alternative if you’re confident with DIY.

    What You’ll Need

    To cut roller blinds, you’ll need:

  • Measuring tape
  • Pencil or marker
  • Scissors or rotary cutter (for fabric)
  • Hacksaw (for aluminium tube)
  • Metal ruler or straight edge
  • Screwdriver (if end caps need removing)
  • Step-by-Step: How to Cut Roller Blinds

    1 – Measure Your Window Space

  • Measure the width where the blind will be installed.
  • For inside mounts, deduct around 10–12mm to allow for bracket clearance.
  • 2 – Mark the Cutting Line

  • Lay the blind flat and mark your new width on both the roller tube  and the fabric.
  • Double-check your measurements before cutting.
  • 3 – Cut the Tube

  • Remove the blind mechanism and use a hacksaw to cut the aluminium tube.
  • Smooth the edge if needed and reattach the end cap.
  • 4 – Trim the Fabric

  • Use a ruler and sharp scissors or rotary cutter to trim the fabric evenly.
  • Take your time—crooked cuts can affect how the blind rolls.
  • 5 – Reassemble and Test

  • Slide the fabric back into the tube and reinstall the components.
  • Mount the blind and test the roll—ensure it raises and lowers smoothly.
  • Mistakes to Avoid

  • Measuring after cutting– always measure first, then cut.
  • Cutting too short– leave a few extra millimetres if unsure.
  • Skipping the tube cut– trimming only the fabric can cause uneven rolling.
  • Using blunt tools– this can fray the fabric or damage the tube.
  • FAQs

    1 – Can you cut all roller blinds?

    Most ready-made roller blinds can be trimmed, but check the mechanism and fabric type first.

    2 – Will cutting affect how the blind works?

    If done properly, no. Just ensure the cuts are straight and the components reassemble correctly.

    3 – Is it worth cutting or just buying custom?

    If you’re short on time or not confident in measuring/cutting, we recommend ordering custom roller blinds from iSeekBlinds for a precise fit, no fuss.

    4 – Can you cut roller blinds to size in Australia?

    Yes. Many ready-made blinds sold in Australia are designed to be cut to size at home. Just check the product details or ask your supplier.

    Make Life Easier with Made-to-Measure Blinds

    Resizing blinds can work in a pinch—but why not make it easy? At iSeekBlinds, our custom-made roller blinds are designed to fit perfectly, no cutting required.

    Why Choose iSeekBlinds?

  • Exact measurements, every time
  • Huge range of fabrics and colours
  • Easy online ordering
  • Fast delivery Australia-wide
  • Step-by-step video guides to install like a pro
  • Latest From Our Style Studio

    Keep the light out for a great night's sleep
    Keep the light out for a great night's sleep
    Read More
    Create the ideal working environment with iSeekBlinds
    Create the ideal working environment with iSeekBlinds
    Read More
    Flowing drapes or classic blinds to lift your living room
    Flowing drapes or classic blinds to lift your living room
    Read More