Measure your bottles, do not follow a rule of thumb
Most guidance gives you a height range and leaves it there, which is how people end up with a niche their shampoo will not stand up in. The honest answer is that the bottles decide the height. Go and measure the tallest thing you keep in the shower, add a couple of inches so it can be lifted out rather than dragged, and that is your interior clearance.
If the household runs to a lot of products, two shallower shelves usually beat one tall opening. Tall bottles go on the lower shelf, smaller items on the upper one, and nothing gets lost behind anything else. In a shared bathroom, two separate niches on the same wall solve the ownership problem far better than one large niche ever does, and each one is easier to waterproof than a single wide opening.
Framing decides where it can go, so ask early
A niche is a void between wall studs, which means its horizontal position is not fully yours to choose. Studs typically sit at sixteen inches on centre, so a standard single niche lands roughly fourteen and a half inches wide between them. Going wider means cutting a stud and adding a header to carry the load, which is normal work but needs to be known about in advance rather than discovered mid build.
There is one wall to avoid where possible, and that is an exterior wall. Cutting a niche into it displaces insulation at exactly the point where a wet wall meets outside air, which is not what you want in a Texas summer. An interior partition wall is the better host nearly every time. If the only candidate is an exterior wall, say so early so it can be detailed properly rather than handled as an afterthought.
Keep it out of the direct spray
This is the detail that separates a niche that stays dry from one that always has an inch of water sitting in it. A niche placed on the wall directly behind the showerhead takes the full sheet of water every time the shower runs. Everything in it stays wet, soap residue builds up faster, and the shelf never gets a chance to dry out between uses.
Put it on a side wall instead, within easy reach from where you actually stand but out of the spray path. The opposite wall from the valve is usually ideal, because you can reach it without stepping backwards into cold water. Walk the shower in your head before you commit, or better still, stand in the existing one and point at the spot you would reach for.
The shelf should be sloped, and most are not
A niche shelf built dead level holds water. It is a small thing that produces a constant, low grade nuisance for years, and it is easily avoided. The shelf should be set with a slight fall towards the shower, on the order of an eighth of an inch, so water runs out on its own rather than pooling at the back edge.
The same thinking applies to the material. A single solid piece for the shelf, rather than several small tiles with grout joints running across it, gives water fewer places to sit and far less to clean. A stone or large format tile shelf with a slight forward pitch will look better in five years than a mosaic shelf that has been holding water since week one.
The niche is a hole in your waterproofing, so treat it as one
Every shower relies on a continuous waterproof layer behind the tile. A niche interrupts that layer and then adds five internal corners to it. Those corners are where failures start, and a failure here does not announce itself. It works quietly behind the tile until it shows up somewhere you did not expect.
This is the part worth asking direct questions about. How is the niche being waterproofed, how are the corners treated, and is the system being used the same one used on the rest of the shower. A well built niche adds nothing to your risk. A poorly detailed one is the most likely leak point in the whole room, which is why it is worth having tiled by someone who does this work regularly rather than occasionally.
KATY TILE & MARBLE has been building showers for homeowners across @@service-areas@@ since the 1990s, and our team can talk through niche placement, shelf detailing and waterproofing as part of the design rather than as a decision made on site. Visit @@all-showrooms@@ to see tile, stone and shelf materials in person, explore our bathroom remodeling work or browse our tile range, and contact us when you want a free in home estimate.
