How long should a frameless shower screen be?

“How long should a frameless shower screen be?” is one of the most common questions people type into Google when planning a new shower. The honest answer is that there is no single correct number. The right size depends on whether you are building a walk-in, an enclosure with a door or a bath screen, where the water comes from, and how much space you have.

This guide gives you sensible starting points, explains what drives them, and shows how to measure so the glass actually fits.

How long should a walk-in shower screen be?

For a walk-in shower, the length of the glass is what keeps the water in, because there is no door.

As a starting point:

• Showering area: aim for at least around 1200mm long. Many designers aim for 1400mm or longer, as we cover in our walk-in vs enclosure guide.
• Glass length: the panel normally covers most of that length, leaving an opening at one end to walk in. A longer panel relative to the showering area blocks more spray.
• Opening: the gap you walk through needs to be comfortable to step through without turning sideways, but every extra bit of opening is a bit less glass between the water and your floor.

The biggest factor is where the water lands. If the shower head is at the closed end of the tray, pointing away from the opening, a slightly shorter panel can work. If the head is in the middle, or on the long wall pointing across the tray, you need more glass, or a short return panel at the open end.

Does a walk-in screen need a return panel?

A return panel is a short fixed or hinged panel at the end of the main panel, turning back towards the opening. It makes sense when the space is too short for a long straight panel, or when the shower head sprays towards the entrance. It reduces splashing without needing a full door.

How long should a shower enclosure screen be?

In an enclosure, the glass does not choose its own length. It fills the space you have:

• In a recess (walls on three sides), the screen spans from wall to wall across the front.
• In a corner, there are two runs of glass, one along each open side of the tray.
• On a tray, the glass usually sits within the edge of the tray so water runs back inside.

The important figure here is the door width. A door that is too narrow is awkward to use every day, and one that is too wide can be heavy on its hinges and needs more space to swing. If the opening is wide, a fixed panel plus a door usually works better than one very wide door.

Should shower doors open in or out?

Hinged shower doors usually open outwards. A door that swings into the shower takes up space inside it and can be hard to open if someone falls against it. Many frameless hinges allow the door to swing both ways, which gives you flexibility. Before deciding, check the door will clear the toilet, basin, radiator and bathroom door when fully open.

How tall should a frameless shower screen be?

Many frameless screens are around 2000mm tall. That height suits most people and most shower heads. Consider going taller if:

• the shower head or rainfall head sits high,
• the people using the shower are tall,
• you want the glass to line up with a tiling line or the ceiling for a cleaner look.

A screen does not normally go all the way to the ceiling. Leaving a gap above the glass lets steam escape, which helps with condensation and drying. If your panel uses a support bar to the wall or ceiling, make sure there is room for it above the glass.

What about bath screens?

Bath screens are shorter in length because they only need to protect the shower end of the bath. They are normally fixed or hinged at the tap end and cover the area where the shower sprays, leaving the rest of the bath open. Height is measured from the top of the bath rim, not the floor, so allow for that when comparing sizes.

Why exact sizes matter so much with frameless glass

Frameless screens look simple, but the sizing has to be right first time:

1. Toughened glass cannot be altered. Once it is made, it cannot be cut, drilled or trimmed. Every size, hole and notch is set before toughening.
2. Walls and floors are rarely perfectly straight. A wall that leans or a tray that falls towards the waste changes the size at the top compared with the bottom. Each panel has to be measured at several points.
3. Gaps are part of the design. Glass should never touch tile, metal or another pane. Small, even gaps around the glass allow for movement and help prevent the edge stress we explain in our guide on why shower screens shatter.

This is the main reason people choose made-to-measure glass over off-the-shelf sizes. Standard widths often leave either a gap you have to fill with a wide profile or a panel that is slightly too big to fit.

How do you measure for a frameless shower screen?

The safest approach is to let your fitter take the measurements, as they will be the one responsible for the gaps and the fixings. A good measuring process:

1. Finish the walls and tray first. Measure after tiling, not before, as tiles change the size.
2. Measure each width at the top, middle and bottom, and each height at both ends.
3. Check every wall with a level so you know which way it leans and by how much.
4. Mark the position of the shower head, valve, waste and any shelves or niches that the glass or hinges might hit.
5. Draw a simple plan showing where the hinges and door opening go, and which way the door swings.

Lumelle Glass, for example, makes made-to-measure frameless screens on a supply-only basis: the customer’s own fitter takes the measurements using Lumelle’s measuring guide and drawing template, and Lumelle cuts the glass to those sizes. Its cutting tolerance is plus or minus 3mm, which is why careful measuring at several points matters.

Quick sizing checklist

So how long should yours be?

Start with the space and the shower head position, not a catalogue size. For a walk-in, give yourself as much glass as the room allows and put the water at the closed end. For an enclosure, focus on a door that is comfortable to use and swings clear. Then measure carefully at several points, ideally with your fitter, before anything is ordered.

If budget is the next question, our cost guide explains how size and glass type affect the price.