Buying roller blinds online is the ultimate DIY win, but because they are custom-made to your exact specs, there’s no “undo” button once the fabric is cut. At Blinds on Demand, we see thousands of successful installs, but we also see the same handful of “rookie errors” that can turn a dream renovation into a headache.
To ensure your DIY project is a total success, avoid these top mistakes when ordering your roller blinds in 2026.
1. The “Single Point” Measurement Trap
The biggest mistake people make is measuring their window width at just one spot.
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The Reality: No window is perfectly square, especially in older Australian homes or new builds that have “settled.”
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The Fix: Always measure the width and the drop in three places (top, middle, and bottom).
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For a Reveal Fit (inside the frame), use the smallest width measurement.
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For a Face Fit (on the architrave), use the largest measurement to ensure full coverage.
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2. Mixing Up “Reveal Fit” and “Face Fit”
This is the most common cause of blinds not fitting upon arrival.
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Reveal Fit (Inside Mount): The blind sits inside the window casing. It looks sleek and minimalist but requires enough “recess depth” for the brackets.
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Face Fit (Outside Mount): The blind is mounted to the architrave or the wall above. This is best for total blockout (no light gaps) or if your window frames are shallow.
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The Mistake: Ordering a “Reveal Fit” but providing “Face Fit” measurements (or vice versa). Always decide your mounting style before you pick up the tape measure.
3. Using a Fabric Tape Measure
Never use a cloth or plastic sewing tape. They stretch over time, and a 2mm stretch can be the difference between a blind that glides and a blind that jams.
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The Fix: Use a quality steel tape measure or a laser measurer. At Blinds on Demand, we work in millimetres—precision is the key to that “high-end” look.
4. Ignoring “Window Obstructions”
You’ve measured the frame perfectly, but did you look at the hardware?
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The Mistake: Forgetting about window winders, protruding handles, or security sensors. If your blind hits a handle on the way down, it will “V-shape” or damage the fabric.
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The Fix: If you have protruding hardware, consider a “Front Roll” (where the fabric rolls off the front of the tube) or a Face Fit to clear the obstruction.
5. Choosing One Fabric for the Whole House
It’s tempting to order the same fabric for every room to keep it simple, but every room has a different job.
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The Mistake: Putting a Sunscreen blind in a bedroom (it becomes transparent at night when the lights are on!) or putting a natural linen in a bathroom (it will trap moisture and grow mould).
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The Fix: Use Blockouts for bedrooms, Sunscreens for living areas, and PVC-coated synthetics for wet areas like kitchens and laundries.
6. Overlooking the “Chain Side” and Child Safety
It seems small, but which side the chain sits on matters for daily use.
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The Mistake: Placing the chain behind a piece of furniture or on the “opening” side of a sliding door where it gets caught.
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The Fix: Walk through your room and imagine operating the blind. If you have kids or pets, 2026 is the year to skip the chain entirely and upgrade to Alpha Tubular Motors for a cordless, “set-and-forget” experience.
| Step | What to Check |
| Tools | Use a steel tape measure (not cloth). |
| Numbers | Measure in mm, not cm or inches. |
| Fit Type | Confirm Reveal vs. Face Fit. |
| Obstacles | Check for handles, winders, or tiles. |
| Samples | Order free fabric swatches to check colours in your light. |
Don’t Guess—Ask the Experts
At Blinds on Demand, we want your DIY project to look professional. If you’re staring at a tricky corner window or a shallow reveal and aren’t sure what to do, send us a photo! Our Australian-based team can walk you through the measurements before you hit “order.”
