Shower niches: where they go, what they cost, and how they leak

A shower niche is worth it if it's built properly: it gives you a tidy, recessed shelf instead of a caddy. But it's also the hardest part of a tiled shower to waterproof, because the membrane has to run continuously into the recess, around four inside corners and across a shelf that must fall back into the shower. Put it on an internal wall, and ask for photos of the membrane before tiling.

What is a shower niche?

A niche is a recess built into the shower wall, usually between two studs, to hold shampoo, soap and the like. It's framed during the rebuild, lined with the same wet-area substrate as the rest of the shower, waterproofed and tiled. Done well, it looks built-in rather than added on, and it does away with a caddy rusting on the shower rose.

Why are shower niches a leak risk?

Because every edge of the recess is a joint. A flat shower wall is one plane of membrane. A niche adds a top, a bottom, two sides and a back, and the membrane has to wrap into all of them without a gap, with reinforcing at the corners as the membrane system requires. Building Code clause E3.3.6 requires surfaces likely to be splashed to be constructed so water cannot penetrate behind the linings or into concealed spaces, and the niche is inside the splash zone.

• The shelf must fall towards the shower. A flat or back-falling shelf holds water against the grout and the corner, which is where it gets in.
• The corners need reinforcing. Membrane systems specify how internal corners are treated; ask whose system is being used and follow it.
• Grout is not waterproof. In MBIE Determination 2024/054, cracked grout let water into the wall and damaged flooring and joists. The membrane behind the tiles is what keeps the wall dry.
• Sealant at the junctions. Where the niche meets the wall tiles, the joints need the flexible sealant the tile and membrane systems specify, not grout alone.

Where should a shower niche go?

On an internal wall, out of the direct spray, at a height that's easy to reach. An outside wall is the wrong place if you can avoid it: a niche cuts into the space the insulation fills, so it leaves a cold spot on the inside face that attracts condensation in winter. Out of the spray means the shelf gets splashed rather than drenched, so it dries faster.

• Internal wall rather than external, so you keep the insulation.
• On the side wall or the wall opposite the shower rose, not directly under it.
• Between existing studs, so the framing doesn't need cutting. A plumber's pipework or an electrician's cable in that bay rules it out.
• Sized to the tiles, so the cuts land on grout lines and the niche looks deliberate.

How much does a shower niche cost in NZ?

A ready-made niche insert costs about $59 to $134 at NZ retailers (prices checked 31 October 2026). That is only the part. The real cost is the labour around it: framing the recess, wrapping the membrane into it and tiling four returns and a shelf, so ask for the niche as its own line on the quote rather than buried in the tiling.

A prefabricated insert doesn't remove the waterproofing work; it changes it. The insert itself doesn't leak, but the joint between its flange and the wall membrane does if it isn't detailed to the membrane system's instructions. For the shower as a whole, see tiled vs acrylic shower and the shower installation cost page.

What size should a shower niche be?

Big enough for the tallest bottle you use, and no deeper than the wall allows. The two inserts above are 355 to 370 mm high and 320 to 406 mm wide, which fits a pump bottle with room to lift it out. Depth is set by the framing: both are 89 to 100 mm deep, so check the stud depth of the wall it is going into before you buy one.

• Width: a single niche usually sits inside one stud bay, so the space between studs is the limit unless the builder reframes.
• Height: line the top and bottom up with grout lines, so the tile cuts look deliberate. A long horizontal niche with a shelf in the middle suits a family shower.
• Height off the floor: around chest height for the main user, out of the direct spray.

What can you use instead of a shower niche?

A ledge, a corner shelf or a good caddy. A tiled ledge (a half-height wall or a nib along the back of the shower) gives the same storage without cutting into the wall, and it is easier to waterproof because the membrane only has to run over the top, not into a recess. Moulded shelves come built into most acrylic showers, and a stainless or powder-coated caddy costs nothing in waterproofing at all.

Can you add a niche to an acrylic shower?

Not as a recess. Acrylic and other one-piece shower units come as a moulded whole, and cutting into the wall behind them breaks the waterproof shell. Many units have moulded shelves instead. If you want a recessed niche, that's a reason to choose a tiled shower.

What should I ask my builder about the niche?

1. Which membrane system are you using, and does its installation guide cover niches?
2. How will the shelf fall, and which way?
3. Is this an internal wall, and is there any plumbing or wiring in that bay?
4. Will you photograph the membrane inside the niche before it is tiled? Our guide to records for exempt bathroom work explains why that matters.