Why the Bathroom Is the Most Important Room to Get Right
The bathroom sees more moisture, temperature change, and daily use than almost any other room in the home. Get the tile wrong and you're looking at slippery floors, stained grout, and premature deterioration. Get it right, and a well-tiled bathroom can look showroom-fresh for decades.
The good news is that porcelain tile is ideally suited to bathrooms — it's non-porous, dense, and available in every finish, size, and style imaginable. Here's how to make the right calls for each bathroom surface.
Bathroom Floor Tile: Safety First
The bathroom floor is where slip resistance matters most. When wet, a polished tile can become dangerously slick. For bathroom floors, prioritize:
- Slip resistance rating: Look for tiles rated R10 or R11 on the DIN 51130 scale, or a COF (coefficient of friction) of 0.6 or higher (wet). In Australia, look for P4 or P5 ratings for wet areas.
- Matte or textured finish: Provides grip underfoot without sacrificing style.
- Smaller formats in shower floors: 10x10cm or mosaic tiles create more grout lines, which actually improve grip. A 4x4 or 2x2 mosaic is the traditional shower floor tile for good reason.
- Medium-format for main floor: 30x30cm (12x12) or 30x60cm (12x24) is the sweet spot for main bathroom floors — manageable to install and visually cohesive.
Bathroom Wall Tile: Go Larger and Lighter
Walls in a bathroom are a very different brief to floors. They don't carry foot traffic, so durability requirements are lower. Instead, focus on:
- Visual impact: Large-format wall tiles (60x120cm, 30x90cm) create a minimal, elegant look with fewer grout lines to clean.
- Lighter weight: Wall tiles are typically thinner (6–8mm) than floor tiles (8–10mm), making them easier to adhere and safer on wall structure.
- Finish options: Glossy and polished finishes work well on walls — they reflect light, make small bathrooms feel larger, and are easy to wipe down.
- Subway and stack patterns: A classic 10x30cm subway tile in gloss white remains a timeless, budget-friendly wall choice.
Shower Tiles: The Waterproofing Equation
Inside a shower enclosure, tile selection and installation must work hand-in-hand with proper waterproofing. No matter how good the tile is, a poorly waterproofed shower will eventually fail.
Key principles for shower tile selection:
- Use rectified tiles (precision cut edges) for tight grout joints — less grout means less surface area for mildew.
- Choose an epoxy or high-quality polymer grout for maximum water and stain resistance.
- For shower floors, go small — mosaics, 10x10, or penny tiles with textured surface.
- For shower walls, large-format slabs (60x120 or even 60x180) create a seamless, spa-like feel and minimize grout maintenance.
Color and Style Choices
The tile you choose will set the entire mood of the bathroom:
- White and off-white: Timeless, brightening, and works with any accent color. Never really dates.
- Concrete and stone effect: Industrial and modern — charcoal, warm grey, and taupe tones are very popular.
- Marble effect (Calacatta, Statuario): Luxurious look without natural stone's maintenance demands. Works brilliantly in polished finish on walls.
- Terracotta and earthy tones: Warm, Mediterranean feel — pairs well with timber vanities and brass fixtures.
- Bold color or pattern: A single feature wall in a zellige-effect, encaustic, or patterned tile adds personality without overwhelming a small space.
Quick Reference: Bathroom Tile Choices at a Glance
| Surface | Recommended Size | Recommended Finish | Key Priority |
|---|---|---|---|
| Main bathroom floor | 30x30 to 30x60cm | Matte / Textured | Slip resistance |
| Shower floor | Mosaic to 10x10cm | Textured | Grip and drainage |
| Shower walls | 30x60 to 60x120cm | Matte or Satin | Easy cleaning |
| Main bathroom walls | 30x60 to 60x120cm | Glossy or Polished | Light reflection |
| Feature wall | Any | Polished or Decorative | Visual drama |
Final Tips
- Always order samples and view them in your bathroom's actual lighting before purchasing.
- Consider the colour of your grout carefully — light grout shows stains, dark grout can fade over time.
- Use a professional waterproofing membrane behind tiles in all wet areas, regardless of the tile you choose.