The complete guide to bathroom tiles in Australia (2026)

Bathroom tiles are the single most considered tile decision in Australian residential design, and rightly so. They're seen daily, they carry the highest technical requirements of any tile application in the house, and they're the first thing a prospective buyer or tenant notices at inspection. Getting them right means understanding several briefs at once — the floor brief with its slip rating, falls and shower-floor mosaics; the wall brief with its full-height and feature-wall decisions; the shower brief with its waterproofing and silicone detailing; the grout brief; and the budget allocation that decides where every dollar earns its keep.

The floor: technical first

R10 is the minimum slip rating for any residential bathroom floor in Australia. That comes before any aesthetic conversation — a tile that doesn't meet the rating is not a candidate, regardless of how it looks. Beyond the rating, the floor has to fall to the waste at a minimum of 1:100, which has direct implications for tile size. Larger formats need to either work with a linear drain along one edge of the shower, or sit outside the wet zone with a smaller mosaic in the shower itself.

For shower floors specifically, the conventional answer remains a small mosaic — penny round and hex are the two staples. The smaller tile naturally accommodates the fall in multiple directions toward a centre point, and the increased grout coverage adds slip resistance on the wettest tile in the house. On the bathroom floor proper, 600×600 or 600×1200 are the working sizes. Larger tiles read well in small bathrooms, counterintuitively — fewer grout lines make a small room feel larger, not smaller.

The drain decision drives the size decision. A traditional centre-point drain requires the floor to fall toward it from all four directions, which means smaller tiles or a mosaic in the shower. A linear drain at one wall lets the floor fall in a single direction, which means a larger format can run uninterrupted from outside the shower right into it.

The wall: design and technical

Bathroom walls have no slip rating requirement, which frees the entire range of finishes — gloss, satin, matte, hand-glazed, textured, ribbed, slabs. The first decision is full-height versus half-height. Full-height tiling is almost always the better long-term investment. The cost difference is real, but a half-tiled wall dates faster, paints poorly above the tile line, and reads as the cheaper option from the moment of completion.

Feature wall placement is the next decision. The feature goes behind the bath, behind the vanity, or on the wall the eye lands on as you walk in. It does not go inside the shower where it spends most of its life behind a partly-fogged glass screen. Zellige and marble-look tiles do their best work as feature walls because the variation in each tile rewards close attention. Large-format porcelain in a calm neutral does the work of the surrounding walls, where you want the eye to relax.

Running the same tile on floor and wall is a specific choice with a specific effect — it creates a single continuous surface and makes a small bathroom feel much larger. In a small ensuite it's hard to beat.

The shower specifically

Waterproofing first. AS 3740 is the standard, it requires a licensed waterproofer, and it is the prerequisite for every other shower tile decision. No tile choice survives a failed waterproofing job.

The niche should be a minimum of 300×600mm internally — anything smaller fits a single bottle awkwardly — and the tile inside it should match the surrounding wall rather than feature against it. The contrast niche has had its moment and now reads as dated.

The shower floor is penny round or hex mosaic, R10 rated, in a colour that either tone-matches the wall tile or sits as a deliberate contrast. The wall tile size in a shower has a sweet spot at 600×1200. Larger is technically possible but the cuts around the tap set become awkward; smaller increases the grout coverage and the labour cost per square metre installed.

The grout joint detail in a shower is the difference between a wet area that lasts twenty years and one that fails in five. Silicone, not cement grout, goes into every change of plane — every internal corner, the floor-to-wall junction, around the waste, around the tap penetrations. Cement grout in a corner cracks the moment the building moves.

Budget allocation

The feature wall rule decides the allocation: spend premium on the one tile the eye lands on, and mid-range everywhere else. A worked example for a 20m² main bathroom: at the budget tier, around $1,000 in tile; at mid-range, around $2,000; at the premium-mixed tier (mid-range throughout with a 4m² premium feature wall), around $2,500–$3,000. The premium-mixed tier is where most well-considered main bathrooms sit.

Grout

Grout is the most overlooked decision in a bathroom and the one that decides how the room ages. Epoxy grout on the shower floor and at all wet-zone joints — it doesn't stain, doesn't need sealing, and resists the soaps and shampoos that gradually eat cement grout. Cement-based polymer-modified grout for the rest of the room, where the wet-zone performance isn't required.

On colour, tone-match the floor and wall grout to the tile so the surface reads as continuous. Deliberate contrast grout, if you use it at all, belongs only on the feature wall where it reads as intentional. Mid-grey is the safest non-matching choice on a neutral tile.

Frequently asked questions