Why Tile Choice Matters More Than You Think

Tile is one of the most permanent decisions you'll make in a bathroom remodel. Choose wrong and you're stuck with a floor that's too slippery, a shower wall that cracks, or grout that stains within months. Choose right and your tile will look great and perform perfectly for decades. This guide takes the guesswork out of the selection process.

The Main Types of Bathroom Tile

Ceramic Tile

The most affordable and widely available option. Ceramic is made from clay fired at lower temperatures, making it slightly more porous than porcelain. It's well-suited for bathroom walls and low-traffic floors. It's easier to cut and install, which makes it a popular DIY choice.

Porcelain Tile

Denser, harder, and less porous than ceramic. Porcelain can be used on floors, walls, and even outdoors. It's highly resistant to moisture and staining, making it an excellent choice for shower floors and bathroom floors in general. It costs more than ceramic and requires a wet saw to cut properly.

Natural Stone (Marble, Travertine, Slate, Limestone)

Strikingly beautiful and highly variable — no two pieces are exactly alike. However, natural stone is porous and requires regular sealing. It's heavier, more expensive, and requires professional installation for best results. Marble in particular is prone to etching from acidic cleaners.

Glass Tile

Used primarily for accents and shower walls. Glass tile reflects light beautifully and doesn't absorb moisture or stains. It's more fragile, difficult to cut, and expensive. Typically not recommended for floor use.

Cement/Encaustic Tile

Known for bold patterns and handmade character. These are often used as floor accents or in small bathrooms for visual impact. They're highly porous and require sealing — they're better suited for floors than wet shower walls.

Understanding PEI Ratings (for Floor Tile)

The Porcelain Enamel Institute (PEI) rating tells you how much foot traffic a tile can handle:

PEI Rating Best Use
0 Walls only — not suitable for floors
1–2 Low-traffic residential floors (bathrooms with soft footwear)
3 Most residential applications including bathrooms
4 High-traffic residential and light commercial
5 Heavy commercial use

For most bathroom floors, a PEI rating of 3 is sufficient.

Slip Resistance: The COF Rating

The Coefficient of Friction (COF) rating measures how slip-resistant a tile is. For bathroom floors — especially shower floors — look for a COF of 0.60 or higher. Smaller, textured tiles (like 2"×2" mosaic) tend to have better slip resistance because of the increased number of grout lines that provide traction.

Choosing Tile by Surface

  • Shower walls: Ceramic, porcelain, or glass — avoid porous stone unless you're committed to regular sealing
  • Shower floor: Porcelain mosaic or small-format tiles with high COF rating — safety is the priority
  • Bathroom floor: Porcelain or ceramic with a PEI rating of 3+
  • Vanity backsplash: Virtually any tile works here — this is a great place for accent or glass tile
  • Feature walls: Stone, large-format porcelain, or decorative cement tile

Size and Format: What Works Where

  • Large format (12"×24" and up): Creates a sleek, modern look with fewer grout lines — great for walls and larger floors
  • Standard (4"×4" to 12"×12"): Versatile and easy to install — works everywhere
  • Mosaic (1"×1" to 2"×4"): Ideal for curved surfaces and shower floors; adds texture and visual interest
  • Subway (3"×6"): A timeless classic for shower walls and backsplashes

Finish Options and Their Trade-Offs

  • Polished/Glossy: Reflects light, easy to wipe clean, but shows water spots and scratches more easily
  • Matte: Hides smudges and imperfections; better slip resistance; more contemporary look
  • Textured: Best for shower floors and outdoor-adjacent areas; maximum grip
  • Honed: A satin-smooth finish popular in natural stone — the middle ground between glossy and matte

Final Buying Tips

  • Always order 10–15% more tile than your calculated square footage to account for cuts and future repairs
  • Buy tile from the same lot number to ensure consistent color and texture
  • Bring a sample home and look at it in your actual bathroom light before ordering in bulk
  • Consider grout color as part of the overall design — it affects the final look dramatically