How to Measure for a Custom Size Shower Curtain

To measure for a custom size shower curtain, I first measure the finished curtain area rather than relying on the shower tray or bathtub size alone. I record the opening width at the top, middle, and bottom, then measure the required drop from the curtain rod or track to the intended lower edge. For the final order size, I add enough width for fullness and overlap, while allowing practical clearance above the floor, tub, or shower base.

Please visit our website for more information on this topic.

As a starting point, I usually calculate curtain width at 1.5 to 2 times the opening width, depending on the desired fullness and fabric or plastic construction. I also allow approximately 2 to 3 inches, or 51 to 76 mm, of side overlap when two curtain panels meet. However, the correct dimensions depend on the hardware, installation environment, material thickness, and whether the curtain is intended to contain water or provide visual privacy.

What You Need Before Measuring

Before I take measurements, I identify the complete installation system. This includes the curtain rod or ceiling track, hooks or carriers, liner arrangement, bathtub or shower base, wall returns, and any plastic profiles used for edge control. A custom size shower curtain should be designed around the installed hardware, because the usable opening may be different from the nominal shower dimensions.

I use a metal tape measure, a pencil, a notepad, and a level when available. For larger commercial or hospitality projects, I also record the unit number, room type, mounting height, wall condition, and whether the dimensions are finished or unfinished. I write every measurement with the unit shown, because mixing inches and millimetres is a common cause of ordering errors.

Step-by-Step Measuring Process

1. Identify the Curtain Rod or Track Position

I begin by locating the exact line where the curtain will hang. For a rod installation, I measure from the inside or centreline of the rod according to the hook design; for a ceiling track, I measure from the carrier attachment point. If the track is not installed yet, I mark its planned position and confirm the mounting height with the installer.

The finished curtain height should be based on the hanging point, not simply on the wall height. Hooks, rollers, eyelets, or snap fasteners can each change the distance between the rod and the top of the curtain. I therefore measure from the actual hanging point to the desired bottom edge and note whether the supplier should include the header, top hem, or attachment hardware in the stated height.

2. Measure the Opening Width at Three Points

I measure the horizontal opening at the top, middle, and bottom. This helps reveal sloping walls, curved surfaces, uneven tile, or a shower base that is not perfectly square. If the three readings differ, I do not automatically use the largest number without checking the installation objective and the available side clearance.

For a straight curtain, the finished width normally needs additional material beyond the opening width. A practical starting calculation is finished curtain width = opening width × fullness factor. A factor of 1.5 creates moderate fullness, while a factor near 2.0 produces more folds and coverage; the final choice should be confirmed with the manufacturer because heavier materials may not hang like lightweight fabric.

3. Measure the Required Drop

I measure vertically from the curtain attachment point to the location where the bottom edge should finish. In a bathtub application, the lower edge may need to extend into the tub to help control splash, while a shower-base installation may require the curtain to remain above the floor or sit inside the base according to the design.

I avoid allowing the curtain to drag on the floor or bunch heavily against the shower base. A small clearance is often useful for movement and cleaning, but the exact amount must match the installation. For example, I may begin with approximately 1 to 2 inches, or 25 to 51 mm, of clearance above a finished floor when the curtain is intended to hang outside a wet area, then confirm the specification with the buyer or installer.

4. Check Corners, Curves, and Wall Returns

Not every custom size shower curtain covers a simple straight opening. L-shaped showers, curved tracks, corner tubs, and ceiling-mounted systems may require separate width measurements for each section. I record the track shape, the direction of travel, the location of the opening, and the position of any fixed overlap.

For curved or segmented systems, I measure along the track path rather than measuring in a straight line between the walls. I also check whether the curtain needs a reinforced corner, weighted hem, snap connection, magnetic closure, or a flexible plastic profile. These details can affect both the finished dimensions and the way the curtain closes.

Goto Huabao to know more.

5. Confirm Overlap and Fullness

When two panels are used, I calculate the combined finished width and then allocate the overlap at the centre. I commonly use 2 to 3 inches, or 51 to 76 mm, as an initial overlap range, but this is not a universal rule. The required overlap may be greater for privacy, water containment, curved tracks, or commercial washroom layouts.

I also check the side returns where the curtain meets the wall. A curtain can have the correct overall width and still leave a gap if the return depth, track position, or wall angle has not been considered. For demanding applications, I ask for a simple sketch showing the opening, track, overlaps, and finished edges before production begins.

Key Decisions That Affect the Final Size

Finished Size or Cut Size

One of the most important questions is whether the requested dimension means the final hanging size or the raw cut size. Headers, hems, eyelets, hooks, welds, and reinforced edges can consume material. I recommend stating dimensions as “finished width” and “finished height” unless the supplier specifically requests cut dimensions.

Single Panel or Multiple Panels

A single wide panel may provide a cleaner appearance, while two panels can be easier to open and may suit a centre-opening track. The choice affects the width calculation, overlap position, packaging, and installation method. For a multi-panel order, I specify the width of each finished panel instead of only providing the total opening size.

Material and Edge Construction

Material selection can influence drape, weight, welding requirements, and edge stability. Depending on the project, buyers may consider PEVA, PVC, polyester fabric, coated textiles, or other specified materials, subject to the intended use and local requirements. At Huabao, I can also discuss plastic profiles and edge-related components where a project requires a more controlled finish, guided edges, or a specific connection method.

Common Measuring Mistakes to Avoid

• Measuring the bathtub or tray instead of the opening: The base size does not always represent the curtain coverage required at the top.
• Taking only one width measurement: Uneven walls and curved installations can create gaps or excess material.
• Ignoring the hanging hardware: Hook height, carrier position, and track design affect the finished drop.
• Confusing raw and finished dimensions: Hems, headers, and attachments can change the usable size.
• Forgetting overlap: Two panels need additional width where they meet.
• Ordering without a drawing: A sketch can clarify corners, openings, returns, and installation direction.

I also advise buyers not to round measurements too early. For example, if the opening is 1,420 mm at the top, 1,415 mm in the middle, and 1,410 mm at the bottom, I preserve those readings and let the supplier or installer determine the practical finished dimension. This is especially important for replacement projects where the existing rod or track cannot be moved.

How to Create a Reliable Measurement Sheet

I prepare one measurement sheet for each bathroom, room, or installation position. The sheet includes the project name, quantity, opening width, finished curtain width, finished height, number of panels, overlap, material, colour, top attachment, bottom finish, and any profile or reinforcement requirement.

I also include photographs when the installation has unusual corners, curved tracks, exposed pipes, sloped ceilings, or uneven wall finishes. Photos do not replace measurements, but they help the supplier understand the relationship between the curtain and the surrounding structure. For repeat orders, I keep the approved measurement sheet as a reference and identify any revisions clearly.

Measurement Summary

• Measure from the actual curtain attachment point to the required bottom edge.
• Measure opening width at the top, middle, and bottom.
• Use a fullness factor, commonly between 1.5 and 2.0, rather than ordering only the opening width.
• Include panel overlap, side returns, corners, and track curves.
• Specify whether all dimensions are finished sizes or raw cut sizes.
• Confirm material, edge treatment, hardware, and plastic profile requirements before production.

How Huabao Can Support Your Custom Order

When I prepare a custom size shower curtain inquiry for Huabao, I provide the measurement sheet, application details, target quantity, preferred material, attachment method, and any drawings or photos available. This gives the production and sales teams a clearer basis for confirming feasibility, construction details, packaging, and quotation requirements. If the project includes plastic profiles or related components, I describe their position and function rather than listing only a general profile name.

For B2B buyers, I can help organize a specification around finished dimensions, panel configuration, edge treatment, colour, logo or packaging requirements, and delivery expectations. Exact minimum order quantities, lead times, and available configurations should be confirmed for each project because they can vary by material, tooling, quantity, and customization level. A pre-production drawing or sample approval may also be appropriate when the installation is non-standard.

Conclusion: The Correct Way to Measure

The most reliable method is to measure the installed or planned hanging system, record the opening at three points, calculate fullness, and define the finished drop and overlap separately. I do not treat the bathtub or shower tray dimensions as the complete answer, because the curtain must work with the rod, track, walls, corners, and bottom clearance. Clear finished-size specifications reduce the risk of gaps, excessive bunching, or an incorrect attachment position.

As the next step, prepare your measurements in one unit, add a simple sketch, and identify whether you need a single panel, multiple panels, curved coverage, reinforced edges, or plastic profile support. Send those details to Huabao for a project-specific review and quotation. With the right measurements confirmed before production, a custom size shower curtain can be specified more accurately for hospitality, residential, healthcare, commercial, and other tailored installations.

For more information, please visit Custom Size Shower Curtain.