How to Measure Your Windows for Perfect Custom Drapes
Accurate measurements are the foundation of well-fitted custom drapes. The right width gives curtains attractive fullness, while the correct drop prevents hems from hovering above the floor or pooling awkwardly. A few careful checks before ordering can make a significant difference to the finished room.
Australian homes often have varied window shapes, from compact apartment windows in Sydney to tall Victorian openings in Melbourne and wide glass doors in Brisbane or Perth. Strong sunlight, seasonal heat and the need for privacy also make fabric choice and lining just as important as the tape measure.
Use a sturdy metal tape measure rather than a fabric tape, and record every dimension in centimetres first. If an American order form requests inches, convert your final figures carefully and avoid rounding until the last step.
For made-to-measure curtains, consider the rail or rod position as well as the glass itself. Mounting hardware outside the frame can make a window appear larger, improve light control and allow the drapes to stack clear of the glazing.
Decide Where The Drapes Will Hang
Begin by choosing whether the rod or track will sit inside the window recess or across the wall above it. An inside mount follows the opening closely and suits clean, compact spaces. An outside mount usually creates a fuller appearance and is useful when you want to cover the frame, reduce light gaps or make a low ceiling seem taller.
For an outside mount, measure the desired finished area rather than relying only on the window dimensions. Extend the width beyond both sides of the frame so the curtains can clear the glass when open. In a sunny Queensland room, extra overlap can also help limit bright side gaps during the afternoon.
Measure The Width
Measure the width in three places: across the top, middle and bottom of the window or recess. Frames are not always perfectly square, particularly in older homes around Adelaide or heritage properties in Melbourne. Use the smallest measurement for an inside fit so the finished treatment does not bind.
For an outside fit, measure the full area you want the fabric to cover, including any overlap beyond the frame. Add the space required for the rod returns or track ends if these are part of the installation. Your curtain supplier can then calculate the finished fabric width based on the heading style and fullness.
Measure The Drop
Take three vertical measurements from the planned top of the rod or track to the sill, floor or desired lower point. Record the left, centre and right figures, then use the longest measurement for a floor-length treatment when the surface is uneven.
Decide whether the hem should finish just above the floor, touch it lightly or create a small break. In busy Australian households, a slight clearance is often easier to vacuum and maintain, while a gentle floor kiss gives formal living rooms a tailored appearance. For doors, check that the bottom edge will not catch on handles or flooring transitions.
Allow For Fullness And Stackback
Curtains need extra fabric to form soft, regular folds. The required fullness depends on the heading, fabric weight and appearance you want. A pinch pleat generally looks more structured, while a gathered or wave heading can create a relaxed contemporary finish.
Remember stackback: the amount of fabric gathered at each side when the drapes are open. On wide sliding doors, insufficient stackback can leave fabric covering the glass. Measure nearby furniture, bookcases and air-conditioning units too, since these may restrict where the curtains can sit.
Check The Rod, Track And Heading
Hardware measurements and fabric measurements are related but not identical. A rod may extend beyond the window, while a track can run almost wall to wall. Measure between the points where the curtain will actually attach, rather than measuring only the visible pole.
Heading tape, rings and hooks can change the finished drop by several centimetres. Check the supplier’s measuring instructions before finalising your numbers. If you are comparing options, custom drapery guidance can help clarify fabric choices, lining, headings and installation details.
Consider Lining, Light And Climate
A decorative face fabric may need a lining for insulation, privacy or light control. Blackout lining is valuable in bedrooms, nurseries and media rooms, while thermal interlining can make a difference near draughty windows. In Western Australia and northern Queensland, a lined treatment can also reduce the impact of intense sun on furnishings.
Test fabric samples in the actual room at different times of day. Colours can look quite different under warm lamps, bright coastal light or overcast skies. Samples also reveal texture, pattern scale and whether the material hangs softly enough for the style you have chosen.
Keep A Clear Measurement Record
Write each measurement beside the room name and window location. Note whether it is a recess or outside mount, the preferred heading, the opening direction and any obstacles. Photographing the window and hardware can be useful when reviewing the order later.
Before submitting your dimensions, complete a final check using a simple record.
Window details to note:
- Width at the top, middle and bottom
- Drop at the left, centre and right
- Inside or outside mounting position
- Floor, sill or full-length finish
Installation details to verify:
- Rod or track length and return
- Heading type and attachment point
- Stackback space on each side
- Door handles, vents and nearby furniture
Avoid Common Measuring Errors
Do not measure from the window glass if the curtains will hang from a rod above the frame. Do not assume two windows in the same room are identical, even when they appear to be. Each opening should have its own measurements, especially in renovated or older properties.
Also check whether the floor slopes and whether the ceiling line is level. If the window is unusually wide, arched or unusually shaped, provide all relevant dimensions and seek professional guidance before ordering. A careful measurement now is far cheaper than altering a finished custom treatment.
Take your time, record measurements in a consistent format and order fabric samples before choosing the final style. With precise dimensions and suitable lining, your custom drapes can improve privacy, comfort and character while fitting naturally into an Australian home.