Fitting a shower enclosure into a small bathroom requires careful planning. The floor plan rarely cooperates, and the wrong enclosure can make a compact room feel even more cramped. That is where a quadrant shower enclosure becomes the smart solution.
Quadrant shower enclosures fit neatly into the corner of your bathroom, featuring two flat sides and a curved glass front. They keep your floor plan clean, leave room for other fixtures, and bring a polished, contemporary look to the room. Whether you have a modest en-suite or a generously sized family bathroom, there is a quadrant configuration to match.
This guide from Asturias Bathrooms covers everything you need to know before buying — from sizes and door styles to glass thickness and finishes.
What Is a Quadrant Shower Enclosure?
A quadrant shower enclosure is a corner-entry shower unit with two straight walls and a curved glass front. The curved panels typically feature sliding doors that slide behind one another when opened, keeping the movement entirely within the enclosure's footprint.
Because the doors do not swing outward, there is no need to measure clearance zones around your toilet or basin. This makes quadrant enclosures a particularly practical choice for compact layouts.
Standard vs Offset Quadrant: Understanding the Difference
There are two main configurations to choose from.
Standard Quadrant: Both flat sides are equal in length, forming a true quarter-circle. Common sizes run from 800x800mm up to 1000x1000mm. This is the ideal choice for smaller bathrooms and en-suites where maximising floor space is the priority.
Offset Quadrant: One side is longer than the other, creating a more rectangular showering area while still fitting into a corner. Sizes typically range from 900x760mm up to 1200x900mm. The offset design offers noticeably more room to move, making it well-suited to busy family bathrooms or anyone wanting a more comfortable showering experience without committing to a full walk-in enclosure.
Offset quadrant shower enclosures are available in left- and right-hand configurations, giving you flexibility depending on your bathroom layout and the position of your pipework.
Choosing the Right Size
Accurate measurement is essential before you order. Measure the two walls where the enclosure will sit, taking readings at the top, middle, and bottom of each. Walls in older properties are rarely perfectly straight, so always work from the smallest measurement. Most enclosures offer a small degree of adjustment — typically 15mm to 25mm — to account for minor discrepancies.
As a general guide:
- 800x800mm: Best for compact shower rooms and en-suites. Functional and space-efficient.
- 900x900mm: The most popular standard size. Comfortable for most users without dominating the room, such as the Merlyn Ionic Essence Frameless Black 900mm One Door Right Hand Quadrant Enclosure.
- 1000x1000mm: Generous showering space. Suits medium-sized bathrooms well.
- Offset options (e.g., 1200x800mm or 1200x900mm): Excellent for those wanting a more spacious feel while keeping a corner installation.
Consider how the enclosure will sit in relation to your toilet, basin, and door swing. A standard quadrant leaves more of the bathroom accessible; an offset quadrant prioritises comfort inside the shower itself.
Door Styles and Accessibility
Most quadrant shower enclosures feature sliding doors as standard — and for good reason. Sliding doors stay within the enclosure's footprint when opened, making them ideal for tight spaces. They also create a reliable, watertight seal when closed, helping prevent water from escaping onto the bathroom floor.
Some quadrant designs pair with hinged or pivot doors instead.
Sliding Doors
The most common choice for quadrant enclosures. Two curved glass panels slide behind one another to open, requiring no additional clearance outside the tray. Easy to use, easy to clean, and well-suited to almost any bathroom size.
Hinged Doors
Less common on curved enclosures, but available in certain ranges. Hinged doors open outward, providing a wide, unobstructed entry. They require clear floor space in front of the enclosure — approximately the width of the door panel — so they are better suited to medium or large bathrooms where space is not a limiting factor.
Pivot Doors
Pivot doors rotate on a fixed pin, swinging both inward and outward depending on the design. They offer a wide entry point and can work on tight openings, though they still require some outward clearance. If your bathroom layout allows for a small swing without obstruction, a pivot door can add a contemporary edge to your enclosure.
Glass Thickness: 6mm, 8mm, or 10mm?
The thickness of the glass in your enclosure affects its feel, durability, and price point. All glass used in shower enclosures must be toughened safety glass, which — if it were ever to break — shatters into small, blunt fragments rather than large, dangerous shards. Reputable products conform to BS EN 12150 and meet the functional requirements outlined in BS EN 14428.
Here is how the three main thicknesses compare:
6mm: The standard thickness and the most widely available option. It is safe, lightweight, and easy to source replacement parts for, such as the Ajax Keah Two Door Quadrant Shower Enclosure in Black. A sensible choice if budget is a consideration, and it delivers perfectly respectable quality across a broad range of styles and sizes.
8mm: A noticeable step up in rigidity and feel. The extra weight gives shower doors a more substantial, quality feel when opening and closing, like the Merlyn 8 Series 2 Door Quadrant Shower Enclosure.
10mm: The premium choice. Significantly heavier and more rigid than 6mm, 8mm, or 10mm glass, 10mm glass delivers a noticeably luxurious feel. Bear in mind that the additional weight places greater demands on hinges and runners, so the supporting hardware must be up to the task.
For a standard quadrant enclosure with sliding doors, 6mm or 8mm glass covers the vast majority of needs. If you are investing in a larger offset quadrant as a bathroom centrepiece, 8mm or 10mm is worth considering.
Easy-Clean Glass Coatings
Many quality enclosures now include a factory-applied protective coating on the glass. These treatments — often marketed under brand-specific names such as Mershield Stayclear (Merlyn) or Ultra Care Glass Protection on the Roman Haven6 One Door Quadrant Shower Enclosure in Silver — create a microscopic barrier on the glass surface that repels water, soap scum, and limescale. The result is a glass panel that stays cleaner for longer and requires less effort to wipe down after use.
If you live in a hard water area, an easy-clean coating is a worthwhile feature to look for.
Aesthetics and Finishes
The frame and hardware of your quadrant enclosure should complement the rest of your bathroom. The three most popular finishes currently available are:
Chrome: The classic and most versatile choice. Polished chrome works with almost every bathroom style, from traditional tiling to contemporary minimalism. Spare parts and matching accessories are widely available.
Matt Black: A bold option that has grown significantly in popularity. Matt black profiles create a strong visual contrast against light tiles and suit industrial or modern bathroom schemes particularly well.
Brushed Brass / Brushed Nickel: A warmer, more understated finish that pairs beautifully with neutral tones and natural materials. Brushed finishes also show water marks less readily than polished alternatives.
Whichever finish you choose, coordinate it with your basin taps, towel rail, and other hardware. A consistent finish throughout the bathroom creates a more considered, cohesive result.
Shower Trays: Do Not Overlook This Step
A quadrant enclosure must sit on a quadrant shower tray — a tray with two straight edges and a curved front that mirrors the shape of the enclosure above it. The two components must match in both size and configuration.
Most quadrant trays are manufactured from stone resin, which offers a solid, premium feel underfoot. Low-profile options — such as the MX Ducostone Low Profile 45mm Quadrant Shower Tray — create a streamlined look and are easier to step into. Some trays feature a slip-resistant texture or coating, a practical consideration for family bathrooms.
Before ordering, confirm the position of the waste outlet on your tray and ensure it aligns with your existing drainage. For offset quadrant trays, check whether the model is left- or right-handed, as this determines which corner of the bathroom it will sit in.
Installation: What to Expect
A quadrant enclosure is a manageable DIY project for a competent home improver, but there are good reasons to use a professional installer, particularly if you are laying a new tray, connecting to existing pipework, or working with walls that are significantly out of plumb.
A correctly installed enclosure should be level, plumb, and securely fixed to the walls. Seals must be properly seated against the walls and tray to prevent water from escaping onto the bathroom floor. Most manufacturers include adjustment tolerances to account for minor wall inconsistencies — check the specification before purchasing.
For peace of mind, verify the enclosure comes with a manufacturer's warranty. Some brands, including Merlyn, offer lifetime guarantees on certain ranges, which reflects the quality of their engineering and gives you confidence in your long-term investment.
Make the Right Choice for Your Bathroom
A quadrant shower enclosure solves one of the most common challenges in British bathroom design: fitting a stylish, comfortable shower into a limited space without compromising the rest of the room. By choosing the right size, door style, glass thickness, and finish, you can put together a setup that looks great and performs reliably for years.
Browse our full collection of quadrant shower enclosures to find the right fit for your bathroom.
