Shower Niche Installation Guide

A shower niche is a recessed shelf built into the shower wall. It holds shampoo, soap, and conditioner without the clutter of a caddy or a corner shelf, and it looks far better than anything that hangs off the wall. Done right, a niche is one of the most useful features in a shower. Done wrong, it is a leak waiting to happen, because it creates a pocket in the waterproofing where water loves to collect. This shower niche installation guide covers planning, framing, waterproofing, and tiling, so your niche stays dry and looks great for years.

What Is a Shower Niche?

A shower niche is a rectangular recess in the shower wall, typically 12 to 14 inches wide, 20 to 28 inches tall, and 3.5 inches deep, which is the depth of a standard 2x4 stud wall. It is built by framing an opening between two studs, lining it with backer board, waterproofing it, and tiling it to match the rest of the shower. The result is a built-in shelf that sits flush with the wall and never gets in the way.

Niches have largely replaced corner shelves and hanging caddies in modern showers. They hold more, they are easier to clean, and they do not collect rust or soap scum the way metal caddies do. They also add resale appeal: a well-built niche is a detail buyers notice, and it signals that the shower was built with care.

The catch is that a niche is a hole in your waterproofing. Every edge, corner, and seam is a potential leak path. A niche that is not waterproofed correctly will let water into the wall cavity, where it rots the framing and feeds mold. That is why the waterproofing step matters more than any other part of this job, and why a niche is best added during a shower build or remodel rather than cut into a finished shower.

Planning Size and Placement

Start by deciding where the niche goes. The most common location is the wall opposite the showerhead, where it is easy to reach but out of the direct spray. Placing the niche on the same wall as the showerhead puts it in the path of the water, which means it stays wet and collects soap residue. Placing it on a side wall works well in a tub-shower combination, where the back wall is the most accessible.

Height matters. The center of the niche should sit at chest height, roughly 48 to 60 inches from the shower floor, so you can reach bottles without bending or stretching. In a shower used by people of very different heights, a taller niche with two shelves works better than a single short one. Avoid placing the niche too low: anything below waist height collects water and is hard to clean.

Size the niche to fit between the studs. Standard studs are 16 inches on center, which leaves about 14.5 inches of clear space between them. That is the natural width for a single-bay niche. If you want a wider niche, you need to cut a stud and reframe the wall with a header, which is structural work and should be done carefully. For depth, a standard 2x4 wall gives you 3.5 inches, which fits most bottles. If you need more depth, consider a niche in a 2x6 wall or a bumped-out wall section.

Before you cut anything, check what is inside the wall. Use a stud finder to locate the studs, and check for plumbing, electrical wiring, and vent pipes in the bay you want to use. A niche cannot go where a pipe or a wire runs. If the wall is an exterior wall, the niche will interrupt the insulation, which can cause condensation in cold climates. An interior wall is the better choice whenever possible.

Tools and Materials

You need a stud finder, a level, a tape measure, a pencil, a circular saw or reciprocating saw, a utility knife, a drill, a trowel, a grout float, a grout sponge, and safety glasses. For materials, you need 2x4 lumber for framing, cement backer board, backer board screws, thinset mortar, waterproofing membrane, membrane banding for the corners, tile, grout, and silicone caulk.

Budget $100 to $300 for materials if you are building a custom niche during a shower remodel, and $150 to $400 for a prefabricated niche kit, which includes a preformed foam niche, membrane, and sealing materials. Prefab kits cost more but save time and reduce the risk of waterproofing mistakes. If you are hiring a contractor to add a niche during a remodel, expect $300 to $800 in labor, depending on the complexity.

Step 1: Frame the Opening

Mark the niche location on the wall, using a level to keep the lines straight. The opening should fit between two studs, with the bottom of the niche at your chosen height. Cut the backer board or drywall out of the opening with a utility knife or a reciprocating saw, being careful not to cut into any wiring or plumbing behind the wall.

Frame the opening with 2x4 lumber. Install a horizontal sill at the bottom of the niche, a header at the top, and short vertical studs on the sides if needed. The framing must be solid and square, because the tile will show every error. Use a level on all four sides of the opening before you move on.

Slope the bottom sill slightly toward the shower, about 1/8 inch over the depth of the niche. This is the most important detail in the entire job. A level shelf holds standing water, which breeds mold and stains the grout. A slightly sloped shelf drains water back into the shower every time. Some installers use a small wedge of thinset under the bottom tile to create the slope. Either way, test it with a level and a splash of water before you tile.

Step 2: Waterproof the Niche

Line the niche with cement backer board, cut to fit each surface: back, sides, top, and bottom. Screw the backer board to the framing with backer board screws, keeping the screws at least 2 inches from the edges to avoid cracking the board. Fill the joints between the backer board panels with thinset and alkali-resistant mesh tape, just as you would on the rest of the shower wall.

Apply the waterproofing membrane over the entire niche, including all five surfaces, and extend it at least 6 inches beyond the niche onto the surrounding wall. The membrane must tie into the wall waterproofing with a continuous, sealed overlap. There can be no gap, no pinhole, and no unsealed seam between the niche membrane and the wall membrane. This is where most niche leaks start.

Pay special attention to the inside corners. Corners are the hardest places to waterproof, and they are where water collects. Use membrane banding or preformed corner pieces in every inside corner of the niche, and press them firmly into the membrane so there are no air bubbles or voids. Let the membrane cure fully according to the manufacturer instructions before tiling. Rushing this step is a common and costly mistake.

Step 3: Tile the Niche

Tile the niche to match the shower walls, or use an accent tile for a decorative touch. Start with the back wall of the niche, then the sides, then the top, and finish with the bottom shelf last. This order keeps the visible edges clean and makes the bottom shelf tile overlap the side tiles, which sheds water correctly.

Cut the tiles carefully. The niche is small, so every cut is visible. A wet saw gives the cleanest cuts, and a tile nipper handles small adjustments. Dry-fit each piece before you set it in thinset. Use tile spacers to keep the joints even, and check with a level as you go. The bottom shelf tile must maintain the slope toward the shower, so check it with a level after setting it.

Let the thinset cure for 24 hours, then grout the niche. Use the same grout as the rest of the shower, and pack it firmly into every joint. Wipe the tile with a damp sponge, and buff off the haze after an hour. After the grout cures, seal it with a penetrating grout sealer. Finish by running a thin bead of 100 percent silicone caulk along the inside corners of the niche, where the tile meets the tile. Caulk flexes with movement, grout does not, and the corners are movement joints.

Common Mistakes to Avoid

The most common niche mistake is a level bottom shelf. A shelf that holds standing water grows mold, stains grout, and eventually leaks. Always slope the bottom of the niche toward the shower. The second most common mistake is poor waterproofing at the corners. Corners need banding, not just a coat of membrane, and the niche membrane must overlap the wall membrane with a sealed seam.

Another frequent error is placing the niche where it gets direct spray from the showerhead. A niche in the direct spray stays wet, collects soap residue, and is harder to keep clean. Place it on the wall opposite the showerhead or on a side wall. A fourth mistake is making the niche too deep or too wide without proper framing. Cutting a stud to widen a niche without adding a header weakens the wall and can cause problems with the tile above.

Finally, do not skip the flood test if you are building a new shower. After the membrane is installed and before tile goes on, plug the drain and fill the shower with two inches of water for 24 hours. If the water level drops, find and fix the leak before tiling. A niche leak discovered after tiling means tearing the niche out and starting over.

Prefab vs. Custom Niches

Prefabricated niche kits are a good option for DIYers and for contractors who want speed and reliability. A prefab niche is a preformed foam box that is already waterproofed and ready to tile. You cut an opening in the wall, set the foam niche in place with thinset, seal the edges to the wall membrane, and tile it. The kit costs $150 to $400, and it eliminates the hardest part of the job: waterproofing the corners. The downside is fixed sizes. If you want a custom size or a double niche, you need to build it yourself.

A custom-built niche costs less in materials, usually $100 to $300, and it can be any size or shape you want. The trade-off is skill. Framing, backer board, and membrane work all have to be done correctly, and the corners are the hardest part. For an experienced DIYer or a professional tile setter, a custom niche is straightforward. For a first-timer, a prefab kit is the safer choice.

Whichever route you choose, plan the niche early. Adding a niche during a shower build or remodel is a small job. Cutting one into a finished shower is a much bigger job, because it means removing tile, cutting the wall, and re-waterproofing an area that was never designed for it. If you are planning a new shower, decide on the niche before the tile goes up. For related costs, see our shower installation cost guide and our shower valve replacement cost guide. For the full picture of shower and tub work, browse our shower and tub hub.