How to Measure for Sheer Curtains: Width, Drop and Fullness

To measure for sheer curtains, start with the intended rod or track, agree the heading and lower-edge finish, and record the coverage width and drop separately. Then have the maker confirm fullness and fabric quantity. Measuring only the glass or copying the size of an old curtain can leave the new sheers too narrow, too short or awkward to operate.

This guide explains the measurements to send for a sheer curtain order in Kenya. It includes worked width examples, a window schedule and checks for layered curtains, balcony doors and uneven floors. The figures illustrate the method; your maker must confirm the final construction and cutting plan for the actual fabric and hardware.

Know which measurement you are recording

Window width, support span, flat curtain width and purchased fabric metres are different quantities. The glass describes the opening. The support span describes the rod or track arrangement. Flat curtain width describes the fabric before gathering. Purchased metres depend on the fabric width and the way it is cut.

Write the measurement name beside every number. For example, record “track span: 240 cm” rather than just “width: 240”. State whether a curtain width applies to one panel or both panels together. This avoids a common misunderstanding when a maker or seller interprets the same number differently.

For the wider buying decisions, use our complete sheer curtain guide. Here, keep your notes focused on the support system, finished coverage, heading and drop. Colour and fabric choice matter, but they do not replace an agreed measurement reference.

Prepare your measuring tools and window notes

Use a tape measure that lets you take a straight, readable measurement without stretching. Have a notebook or phone ready and draw a simple outline of the window. Label each opening by room and position, especially when you are ordering sheers for several similar windows.

Photograph the whole opening and then any existing hardware, handles or nearby obstructions. Include the wall space on both sides and the area above the window. A close-up of the glass alone gives the maker less information about the support arrangement and where fabric can gather.

Work from a position you can reach safely. Tall windows, difficult access and uncertain ceiling arrangements are reasons to request professional measurement. Do not estimate a precise custom drop from a photograph or lean out of an opening to reach a point that is otherwise inaccessible.

Decide whether the existing hardware will be retained

If a rod or track already exists, check whether it is suitable for the proposed sheer heading and whether it will remain in the same position. A new support arrangement can change the width, drop and space between layers. Resolve that decision before treating the measurements as final.

If the hardware is not fitted, record the opening and surrounding space as preliminary information. Agree the proposed mounting position with the installer. Where an exact floor clearance matters, finalise the drop from the installed attachment arrangement before the curtain is cut.

Our curtain rails and rods comparison helps you discuss suitable options. Ask how the chosen curtain attaches and moves, and confirm that brackets, gliders, rings or eyelets fit the intended arrangement. The support choice and heading need to be specified together.

Measure the usable width of a straight rod or track

For a straight rod, record its working span rather than including decorative finials in the curtain coverage. Note the bracket positions and whether they limit panel movement. If the maker needs a different reference for the chosen system, follow those instructions and label it clearly.

For a straight track, record the relevant span and describe any separate overlap or return arrangement. A track with special components may need more information than a single end-to-end dimension. Send a photograph and ask which parts should be included in the measurement.

Measure the glass or opening width as additional context, not as a substitute for the support span. If the support is shorter than the coverage you need, tell the installer before ordering. A wider curtain cannot extend beyond a support arrangement that prevents it from reaching the intended position.

Allow space for the sheers to gather when open

When curtains open, their folds occupy space at the sides. This is often called stacking space. Decide whether you want the glass exposed fully or whether some fabric can remain across the opening. Nearby walls, cupboards and doors may limit the available space.

There is no universal side extension that suits every window and heading. A lightweight sheer still forms a stack, and its width depends on the material and construction. Ask the maker or installer to assess the proposed arrangement rather than applying one fixed allowance to every room.

For a frequently used balcony doorway, check the opening direction and the position of handles. Fabric should not obstruct routine access or catch when the door moves. Record which side you want the panel to gather towards if that differs from a conventional central opening.

Choose the heading before measuring the final drop

The drop must use the reference required for the actual hanging method. Curtains attached by hooks to rings or gliders do not necessarily use the same starting point as curtains threaded directly onto a rod. Changing the heading after measurement can therefore change the finished position.

Ask whether the maker wants a hanging-point measurement, an overall finished curtain length or another specified reference. Describe that point in writing and include a photograph where possible. Do not add a heading allowance yourself unless the maker explicitly asks you to do so.

The eyelet and pinch-pleat guide explains the practical differences between those headings. For any option, confirm the rod or track compatibility and measurement convention. A correct number taken from the wrong starting point can still produce the wrong drop.

Measure down to the agreed lower-edge finish

Decide whether the sheer should finish above the floor, at the sill or at another agreed point. Consider cleaning, door movement, furniture and the way the room is used. A decorative trailing finish may be less practical where people repeatedly pass through a balcony opening.

Measure vertically from the agreed top reference to the intended lower edge. Keep the tape straight and note the unit. If you measure to the floor, state that clearly and ask whether the maker will deduct the clearance or wants you to supply an already adjusted finished drop.

Avoid two people both making the same deduction. For example, if you have already allowed a floor clearance, label the number as the requested finished drop and tell the maker the allowance used. Confirm the final instruction before manufacture rather than assuming the adjustment is understood.

Check several drop positions across the opening

Floors, ceilings and installed supports may not be perfectly level. Measure at the left, centre and right of a wide opening, using the same reference each time. Record all readings instead of immediately averaging them or selecting whichever number seems easiest.

Ask the maker how the curtain should be finished if the readings differ. A floor-clearing treatment must avoid dragging at the highest floor point, while a deliberately level hem can appear farther from the floor elsewhere. The appropriate decision depends on the room and the desired appearance.

Include planned flooring changes in the discussion. New tiles, carpet or other finishes can change the available drop. If the final floor surface is not complete, mark the measurement as provisional and agree when it will be checked again before the curtains are cut.

Understand fullness before choosing a panel width

Fullness is the extra flat curtain width used to create folds over the support span. As a planning calculation, combined flat width equals coverage width multiplied by the agreed fullness ratio. The appropriate ratio depends on the sheer fabric, heading and appearance being specified.

A two-metre span at an illustrative ratio of two times fullness corresponds to about four metres of combined flat curtain width before construction allowances. This is a visual-planning example, not a universal recommendation or an instruction to buy four running metres of cloth.

See our curtain fabric quantity guide for the distinction between coverage and material. Ask the maker to demonstrate the intended folds and confirm which width is quoted after heading construction. Some headings have their own fixed or system-specific requirements.

Worked examples for width planning

For the 240 cm example, two equal panels would each contribute 240 cm of flat width before any separate construction allowances. The combined width is 480 cm. Record whether the seller's stated panel width is flat, gathered or the intended track coverage before using it in this calculation.

The examples do not include hems, joins, returns, centre overlap or pattern allowances. Nor do they determine the purchased metres. Those details depend on the actual cloth and construction. Have the maker confirm the quantities and the resulting finished coverage before you accept the quote.

Measure each layer separately

Where sheers sit behind main curtains, record the width and drop for each support system. The two layers may occupy different positions or use different headings. Copying the main curtain dimensions without checking the rear attachment point can leave the sheer at the wrong height.

Describe window handles, deep sills and the available space between layers. The sheer should move without rubbing against the glass or getting trapped behind the front curtain. Also check where each layer will stack so the two fabric groups do not interfere with normal use.

Use our sheer and blackout layering guide when planning the arrangement. A sample curtain height should be reviewed against both the support and the lower-edge finish, rather than assuming the two layers must have identical overall dimensions.

Fabric width and pattern direction affect the purchase quantity

Before ordering fabric by the metre, ask for its usable width and the proposed cutting orientation. The cloth must accommodate the drop and coverage through an appropriate construction plan. A width calculation alone cannot establish how many running metres need to be purchased.

Embroidery, borders and directional designs may constrain the layout. Joined fabric widths may require pattern matching, and a decorative edge may limit how the curtain is shortened. Ask the maker to explain the relevant allowances instead of adding a guessed percentage to every order.

Our voile, linen-look and embroidered sheer comparison explains the fabric checks. Confirm the actual material and any care-related preparation before final cutting. Do not prewash or alter a supplied fabric unless its instructions and the maker's process call for it.

Create a window schedule for the quotation

Use one row per opening and keep separate notes for the sheer and main curtain where there are two layers. A simple schedule prevents room names and measurements becoming mixed up in a message thread. Attach photographs with matching labels.

Send raw readings together with the agreed finished specification so the maker can check the relationship between them. Keep centimetres or millimetres consistent throughout. If an existing label uses inches, state the unit explicitly rather than copying an unlabelled number.

Final checks before the sheer is made

Review the support arrangement, heading, coverage, drop, panel count and fabric reference together. Confirm whether your numbers describe the window, the installed system or the finished curtain. Resolve any difference between the schedule, photographs and quotation before approving the cutting plan.

Ask for the fabric quantity and rate, tailoring, accessories, delivery and fitting to be separated where applicable. Our sheer curtain prices guide helps you compare the complete scope. Measurements should support an equivalent specification when you obtain more than one quotation.

Finally, state the privacy requirement independently of size. A well-fitted translucent sheer does not become an opaque evening covering. Read the sheer privacy guide if the window is overlooked, and include the main layer in the original plan where needed.

Request help with measuring your sheers

If the hardware is uncertain, the opening is unusually shaped or the drop is difficult to reach, request a measuring assessment before ordering custom curtains. Preliminary dimensions can help start a quotation, but they should be clearly identified as estimates until the final arrangement is confirmed.

Contact Curtains Kenya for sheer curtain measuring and quotation support. Send the window schedule, photographs, fabric preference and location. Ask for the final width, drop, heading, fullness and quantity to be confirmed in writing before manufacture.