Choose porcelain over ceramic for bathroom floors because it is denser and more water-resistant. For wet areas, select a matt finish tile with a slip resistance rating of R10 or higher, and keep large format tiles to walls or well-prepared floors with a fall to drain. Natural stone looks beautiful but needs regular sealing and careful cleaning.
01Porcelain vs ceramic: what matters in a bathroom
Porcelain tiles are made from finer clay and fired at higher temperatures. They are denser, absorb less water and are harder than ceramic tiles. For bathroom floors and shower bases, porcelain is the safer choice because it resists moisture and handles knocks better.
Ceramic tiles are lighter, easier to cut and often cheaper, but they absorb more water and are not as strong. They still work well on bathroom walls and in low-traffic areas. If you love a ceramic look for the floor, check its water absorption rating and intended use.
In Melbourne homes, moisture and temperature swings make porcelain a practical default for wet areas. It is less likely to expand or crack when installed correctly with the right flexible adhesive.
- Porcelain: lower water absorption, stronger, better for floors and showers
- Ceramic: easier to cut, lighter, fine for walls and splashbacks
- Always check the manufacturer's suitability for wet areas
02Large format tiles: fewer grout lines, more preparation
Large format tiles (typically 600 x 600 mm or larger) reduce the number of grout lines, which makes a small bathroom look less busy and easier to clean. They are popular for bathroom walls and floors.
However, large tiles demand a very flat substrate. Any bumps or dips in the wall or floor will cause lippage, where one tile edge sits higher than the next. This is harder to fix with a thicker adhesive bed and may require levelling screeds or wall straightening first.
In showers, large format floor tiles must still fall correctly to the drain. This is trickier with a single large tile because one flat tile cannot slope in several directions. Consider a linear drain or choose smaller tiles for the shower floor if falls are tight.
- 600 x 600 mm or larger counts as large format
- Substrate tolerance matters: ask your tiler to check
- Use a lippage control system for large tiles
- Discuss shower falls before selecting a large floor tile
03Grout lines: why they matter and how wide
Grout lines are not just cosmetic. They allow for slight size variation between tiles, accommodate movement and prevent tiles from pressing against each other when the building shifts. A very thin grout line looks modern but it leaves less room for adjustment.
Rectified tiles have mechanically cut edges that are square and uniform, so they can be laid with a tighter joint, often 2 to 3 mm. Non-rectified tiles have slightly rounded or irregular edges and need a wider joint, usually 3 to 5 mm, to keep lines straight.
Use a grout colour close to the tile if you want the joints to disappear, or a contrasting colour if you want to highlight the pattern. In wet areas, choose a mould-resistant grout and follow the manufacturer's curing time before using the shower.
- 2–3 mm joint for rectified tiles; 3–5 mm for non-rectified
- Use flexible grout in areas with movement
- Clean grout lines regularly to prevent mould in Melbourne's damp months
04Matt vs gloss: where each finish works
Matt finish tiles have a textured or low-sheen surface that provides more grip underfoot, especially when wet. They also hide water spots, soap scum and smears better than gloss tiles. For bathroom floors, a matt or structured finish is the practical choice.
Gloss tiles are smooth and reflective. They bounce light around a small room and are easy to wipe clean, but they become slippery when wet and show every watermark. Reserve gloss tiles for walls, splashbacks and feature areas, not for the shower floor.
Some tiles come with a lappato finish, which is part matt and part polished. This can give a soft sheen on walls while still offering some texture. Always test a floor tile by wetting the surface and running your fingers over it before you commit.
- Matt: better grip, hides marks, recommended for floors
- Gloss: more reflective, easier to clean, best on walls
- Lappato: a middle ground for low-traffic wet areas
05Slip resistance for wet bathroom floors
Slip resistance is not the same as matt versus gloss. A tile can look matt but still be slippery when wet. Australian manufacturers test tiles and give them a slip resistance rating. For a bathroom floor, look for a tile rated R10 or higher, or for pendulum classifications P3 or P4.
The shower base is the highest risk area. The floor must slope to the drain and the tile surface must provide grip under bare feet. Avoid polished or glazed tiles in the shower. Smaller tiles with more grout lines can also increase friction.
If you are buying tiles from a showroom, ask to see the slip rating documentation. A reputable supplier will have it. When you compare tiles, check the rating for wet, barefoot use, not just for dry floors.
- Choose R10 or higher for bathroom floors
- Shower bases: P3 or P4 pendulum rating, or equivalent
- Smaller tiles and grout lines improve grip
- Always confirm the wet barefoot slip rating
06Natural stone care: sealing and maintenance
Natural stone tiles such as marble, travertine, limestone and bluestone look unique, but they are porous and softer than porcelain. They need sealing before grouting and again after installation, then periodic resealing as the manufacturer recommends.
Stone reacts with acidic cleaners. Vinegar, lemon juice and some bathroom sprays can etch polished marble and limestone. Use a pH-neutral stone cleaner and wipe up spills quickly. Soap scum and hard water can build up in the stone's texture, so squeegee the shower after use.
Bluestone and granite are harder and less porous, making them more forgiving in a Melbourne bathroom. Marble is elegant but high-maintenance. If you want the stone look with less care, consider porcelain tiles with a stone-effect print. When you are ready to compare tile finishes and product options, visit the Baroco Interior Innovations showroom at 21/105-111 Ricketts Road, Mount Waverley. Call 0426 520 859 before you visit to confirm someone is available to talk through your bathroom renovation.
- Seal natural stone before grouting and periodically afterwards
- Use pH-neutral cleaners; never acid or vinegar
- Wipe down stone showers after each use
- Consider porcelain stone-look tile for lower maintenance
Planning this for your home? See how we design, supply and build it, or visit the Mount Waverley showroom.
Bathroom renovations · Try the AI bathroom previewRelated questions
Still unsure? Call 0426 520 859 and talk to someone who actually installs this stuff.
Are large tiles suitable for small bathrooms?
Yes, large tiles can make a small bathroom feel less cluttered because there are fewer grout lines. But the walls and floor must be very flat, and you may have more waste from cuts. In a small shower, large floor tiles can be hard to slope to the drain, so talk to your tiler first.
What is the safest tile for a shower floor?
A matt or textured porcelain tile with a slip resistance rating of R10 or higher (or P3/P4 pendulum) is the safest. Smaller tiles with more grout lines also add grip. Avoid polished or glazed tiles on the shower floor.
Do natural stone tiles need more maintenance in Melbourne?
Yes. Melbourne's hard water and damp winters mean natural stone needs regular sealing and pH-neutral cleaning. Acidic cleaners and vinegar will etch the surface. If you do not want the maintenance, a porcelain stone-look tile is more practical.
Can I use gloss tiles on bathroom walls?
Yes, gloss tiles work well on walls and splashbacks because they reflect light and are easy to wipe clean. They are not recommended for floors, especially wet areas, because they become slippery when wet and show watermarks.
