A recessed shower niche looks like the simplest thing in the world once it is finished: a tidy shelf set into the wall for your shampoo and soap, tiled to match, no clutter on the tray edge. But that neat little rectangle is one of the quiet tests of a good bathroom fit. It has to be positioned before a single tile goes up, boxed out square, tanked as carefully as the rest of the shower, sloped to shed water, and then tiled so the grout lines flow straight through it. Get it right and nobody notices the craft, which is exactly the point. Get it wrong and it leaks behind the wall for years before anyone realises.
This page walks through how we design and build a shower niche in a real Plymouth bathroom, whether it is a Victorian terrace in Peverell or a newer semi out towards Derriford. We will cover what a niche is and why it earns its place, the build sequence step by step, and the design decisions that separate a shelf you love from one you tolerate. It sits alongside the wider job of a walk-in shower installation, and the same care that goes into the tray and glass goes into this small recess in the wall.
What a shower niche is, and why include one
A shower niche, sometimes called a shampoo niche or a recessed shelf, is a storage pocket set into the thickness of the wall inside the showering zone. Instead of bottles perched on the tray, a corner caddy that rusts, or a suction basket that falls off at the worst moment, everything lives in a clean recess that is part of the tiled wall itself. In a walk-in shower where the glass is frameless and the lines are meant to feel calm, a niche is often the single detail that keeps the space looking uncluttered.
There is a practical case as well as a visual one. A niche keeps shampoo and shower gel at a sensible height, off the floor and out of the run of the spray, which matters in a busy family bathroom in Plymstock or Mannamead. It does not steal any floor space, because it borrows depth from inside the wall. And when it is built properly, it is genuinely maintenance-free: no fittings to corrode, nothing to re-fix, just tiled surfaces you wipe down like the rest of the shower.
Clutter-free
Bottles and soap sit in the wall, not on the tray edge or a wobbly caddy, so the showering zone stays clean and easy to clean.
No lost floor
The recess borrows depth from inside the wall cavity, so you gain storage without giving up a single millimetre of standing room.
Built to last
With no metal fittings to rust and nothing to re-stick, a tiled niche is as durable as the wall around it when it is tanked correctly.
The catch is that a niche cannot be an afterthought. It has to be decided and formed while the walls are still being boarded and tanked, because it is cut into the structure of the shower before any tiling starts. That is why we talk it through at the design stage of every walk-in shower project, long before the tiles arrive on site.
How a shower niche is built, step by step
The reason a niche has to be planned early is that its construction is woven into the boarding and tanking stage of the shower. By the time the tiles go on, the recess is already formed, waterproofed and ready. Here is the sequence we follow on a typical Plymouth fit, and it is worth understanding because the order is what keeps water where it belongs.
- Position and mark the niche. Before any board goes up, we agree the height, width and location, checking it lands between the wall studs where possible and sits clear of the shower valve, the glass line and any pipework hidden in the wall.
- Form the box-out. We frame the opening, either working within the gap between the studs or boxing the recess out from the wall so it can be as deep as needed. The back and sides are lined with tile backer board, cut square and screwed tight so nothing flexes.
- Set the drainage slope. The base of the niche is built with a slight forward fall, a few degrees tipping back towards the shower, so any water that collects on the shelf runs out rather than pooling in the corner.
- Tank and waterproof. The niche is tanked as one continuous part of the shower’s waterproofing. We take the tanking membrane and liquid seal right into and around the recess, sealing every internal corner so the box is fully inside the waterproof envelope.
- Tile and finish the edges. Only now do the tiles go on. We tile the back and base of the niche, then dress the front edges with mitred tile, bullnose or a neat trim, lining the grout joints up with the surrounding wall so the recess reads as part of the tiling, not a hole in it.
Each of those steps depends on the one before it, which is why a niche cannot be retrofitted into a finished shower without ripping tiles off. The tanking in particular is non-negotiable: a niche is effectively a shelf carved into a wet wall, so it has to be sealed into the same waterproof layer that protects the tray and the walls. We cover how that waterproofing works across a whole room in our guide to wet room installation, and the same principles scale down to a single recess.
Why the tanking and the slope matter so much
If there is one part of a niche worth being fussy about, it is the waterproofing. A recessed shelf sits directly in the path of the spray, so it is wet every single day. The tiles and grout are not what keep the water out; behind them, the tanking membrane is the real barrier. If the niche is not sealed into that membrane, water finds the gap, tracks into the wall, and you get damp, blown plaster or rot long before any stain shows on the surface.
This is exactly why a niche must be formed during the boarding and tanking stage and never bolted on afterwards. We treat the recess as part of the shower’s waterproof envelope, carrying the seal continuously into the box and paying particular attention to the internal corners, which are where cheap installs fail. The forward slope on the shelf is the second half of the story: with a slight fall towards the shower, water drains off the base rather than sitting in a puddle that slowly works at the grout. A dead-level niche looks fine on day one and collects a grey tide-line by month six.
None of this is visible in the finished shower, and that is the point. Good waterproofing is invisible by design. It is also the single biggest reason we would gently steer anyone away from adding a niche as a DIY tile job on top of an existing wall, because the seal has to be built in from the board up. If you are planning the wider tiling yourself or simply want to understand the surfaces, our bathroom tiling and flooring hub goes into how walls and floors are prepared and sealed.
Design and considerations
Once the principle is settled, the interesting decisions are about size, position and finish. This is where a niche moves from purely functional to genuinely part of the design, and where the choices you make with your fitter shape how the shower looks for the next decade.
Sizing and height
A niche is most useful when it sits at a comfortable, reach-in height, roughly around chest to shoulder level as you stand in the shower, so you are not stooping for the shampoo. We usually set the height off the finished tray and centre it away from the corners. Width is often driven by the tiles: sizing the opening to whole or half tiles keeps the grout lines clean and avoids awkward slivers. Depth is set by the wall, and a box-out lets us go deeper than the stud gap allows when you want room for taller bottles.
Between-studs or boxed-out
Where the wall allows, we form the niche in the gap between the vertical studs, which keeps it flush and tidy. Where the studs fall in the wrong place, or where you want a specific size, we box the recess out from the wall instead. Both are sound; it simply changes how the niche relates to the wall and how deep it can be. The right call depends on your wall build and where the shower valve and pipework already sit.
Single, double or a shelf
A single niche suits most bathrooms and keeps things simple. A tall double, or a niche split with a central shelf, gives separate zones, one for each person or one for bottles and one for razors and soap, which families in Plympton and Crownhill often ask for. A built-in shelf across the recess is the neatest way to divide it, tiled to match so it reads as one piece.
Tile, edges and trim
The front edge of the niche is where the craft shows. There are three tidy ways to finish it: a mitred edge, where two tiles are cut at 45 degrees and meet in a crisp corner; a bullnose or rounded-edge tile that softens the return; or a metal or PVC tile trim that frames the opening in a clean line. Which one suits depends on the tile and the look you are after, from a sharp contemporary mitre to a forgiving trimmed edge. Lining the niche tiles up with the wall grout is what makes the whole thing look built-in rather than punched-out, and it is fiddly, careful work. For the wider layout choices around it, our page on walk-in shower screens and enclosures shows how the glass line and tiling interact.
Waterproofing warnings and cost
The warnings are simple: never add a niche without tanking it into the shower, never leave the shelf dead level, and never trust grout and silicone alone to keep water out. On cost, a niche is a modest addition within a larger fit rather than a big-ticket item on its own, and it is far cheaper to include while the walls are open than to add later. Plymouth fitting costs run around nine per cent below the UK average, and a typical walk-in shower here lands somewhere between £2,500 and £6,500 with an install of three to six working days, with a niche folded into that as part of the tiling. Our Plymouth bathroom cost guide breaks the wider numbers down, and it pays to plan the niche alongside the tray, so our notes on low-level shower trays and walk-in shower sizes and dimensions are worth reading in the same sitting. Keeping it all watertight for the long term is also the theme of our guide to walk-in shower maintenance.
Frequently asked questions
Can a niche be added to an existing tiled shower?
Not without removing tiles. A niche has to be formed and tanked while the walls are being boarded, because the recess is sealed into the shower’s waterproofing before any tiling starts. Adding one to a finished, tiled shower means stripping the tiles back to the board in that area, forming and tanking the recess, then re-tiling. It is far simpler and cheaper to include it when the shower is first built.
How high should a shower niche be?
We usually set a niche at a comfortable reach-in height, roughly around chest to shoulder level as you stand in the shower, so you are not stooping for the shampoo. The exact height depends on who uses the bathroom and where the shower valve and glass sit. We mark it off the finished tray and check it in position before any board goes up.
Why does a shower niche need to slope?
The base of a niche is built with a slight forward fall, tipping back towards the shower, so water drains off the shelf instead of pooling in the corner. A dead-level niche collects standing water that slowly works at the grout and leaves a grey tide-line. The slope is small enough that bottles still stand up, but enough to shed water every time.
Should I have a single or double niche?
A single niche suits most bathrooms and keeps the look simple. A taller double, or a niche split with a central shelf, gives separate zones, which families often prefer so each person has their own space or bottles and razors are kept apart. It comes down to how many people share the shower and how much storage you want built into the wall.
How are the edges of a niche finished?
There are three tidy options: a mitred edge, where two tiles are cut at 45 degrees to meet in a crisp corner; a bullnose or rounded-edge tile that softens the return; or a metal or PVC tile trim that frames the opening. The right choice depends on the tile and the look you want. Whichever we use, we line the niche grout joints up with the surrounding wall so it reads as built-in.
Will a tiled niche leak over time?
Not if it is built correctly. The tiles and grout are not the waterproof layer; the tanking membrane behind them is, and a properly built niche is sealed into that membrane with special care at the internal corners. Combined with the forward slope that drains the shelf, a well-tanked niche is as watertight and long-lasting as the wall around it.
Built in, watertight, done once
Plan your shower niche with a Plymouth fitter
A niche is a small detail that shows the care in the whole job. We will talk through position, size and finish, tank it properly into your shower, and line the tiles up so it looks like it grew there. No pressure, no jargon, just tidy work.