Yes — there’s a real difference between a $20 per m² tile and a $120 per m² tile, and most of it isn’t what you can see in the showroom. The price gap comes down to body density, water absorption, glaze hardness, edge rectification and slip rating. Some of those matter for every job. Some only matter in wet zones or commercial traffic. Here’s how to tell which spec is worth paying for and which one you can skip.

What you’re paying for in a tile

A tile is a fired clay body with a glaze on top. The cheap end and the expensive end use the same basic recipe — the difference is in how dense the body is, how the edges are finished, and what the glaze can take.

Body type: ceramic vs porcelain

Ceramic tiles are fired at lower temperatures with a softer, more porous body. They’re cheaper, easier to cut, and fine on walls and low-traffic floors. Porcelain is fired hotter and denser — water absorption under 0.5%, harder to chip, and rated for outdoor use, wet areas and commercial floors. If you’re tiling a bathroom floor, a kitchen, or anywhere outside, you want porcelain. If you’re tiling a splashback or a feature wall, ceramic is plenty.

Water absorption rating

This is the spec that actually predicts how a tile holds up. The lower the number, the denser the tile and the less it’ll soak up water, stains and spilled wine. Look for under 0.5% for true porcelain (rated for any application), 0.5-3% for stoneware, and 3-10% for standard ceramic. Outdoor and pool-surround tiles need to be under 0.5% so they don’t crack in a Sydney winter freeze-thaw or a Melbourne cold snap.

PEI rating (glaze hardness)

The PEI scale runs 1 to 5 and tells you how much wear the glaze will take before it dulls. PEI 1-2 is wall-only. PEI 3 is fine for residential floors with normal traffic. PEI 4 handles heavy residential and light commercial — entries, kitchens, hallways. PEI 5 is commercial-grade. A cheap tile rated PEI 2 sold for a kitchen floor will look tired in three years. A mid-priced PEI 4 in the same spot will still look new in ten.

Rectified vs cushion edge

Rectified tiles have been mechanically squared after firing, so every edge is dead-straight and the same dimension. That lets the tiler lay them with a 2 mm grout joint and get the modern, near-seamless look. Cushion-edge (or pressed-edge) tiles need a wider 5-8 mm grout line to hide the dimensional variation. Rectified costs more — partly the extra processing, partly because it’s typically only done on better porcelain stock.

Slip rating (R-rating)

For wet areas, outdoors and pool surrounds, the slip rating is non-negotiable. R10 is fine for most internal floors. R11 for bathrooms and laundries. R11-R12 for outdoor and pool surrounds. A bargain-bin tile without an R-rating is a liability in a wet zone — and Australian building codes generally require one.

Where the cheap tile is fine

A budget ceramic tile does the job for splashbacks, laundry walls, low-traffic powder rooms, and any wall application that won’t get walked on. The glaze still wipes clean, the look can be perfectly good, and you’re not stressing the tile in a way that exposes the lower spec. Spending up on a $90 per m² designer tile for a 2 m² powder-room wall is rarely the right call.

Where you should pay up

Pay up for porcelain — and a properly rated one — in the kitchen, the main bathroom floor, the entry, any outdoor area, and any room with large-format tiles. Large-format planks and 600×1200 mm tiles need a flat, square body to lay well; cheap tiles in those sizes cup, lip and crack joints within a year. Natural stone (marble, travertine, limestone) is its own category — beautiful but porous, needs sealing, and the price reflects the slab cost, not just the processing.

Don’t forget the labour line

The other thing that catches buyers out: a $30 per m² tile and a $100 per m² tile cost about the same to lay. The labour rate is set by the tile size, the pattern and the prep — not the sticker price on the box. We’ve broken down current tiler rates per m² in Australia if you want the full picture. Cheap tiles only save money if the cheaper body holds up — if it doesn’t, you’re paying the labour twice.

When tile isn’t the right answer at all

Tile is the right call for wet zones and high-traffic floors that need to last 20-plus years. For everywhere else — living rooms, bedrooms, hallways — hybrid or luxury vinyl plank gets you a similar durability story for less labour and a warmer underfoot. Have a read of our best flooring for kitchens guide and the waterproof flooring options overview before you commit a whole house to tiles.

The short version

Cheap tiles aren’t bad tiles — they’re tiles built to a different spec. For walls and low-traffic spots, the budget ceramic does the job. For floors, wet zones and outdoors, pay up for rectified porcelain with a PEI 4-plus rating, water absorption under 0.5%, and the right slip rating for the room. Bring the spec sheet with you to the showroom, not just the swatch.

What to verify before you buy