Start with location, not with the showroom
| Location | Priority | Typical choice |
|---|---|---|
| Bathroom floor | Wet slip resistance, durability | Matte or textured porcelain |
| Shower floor | Follows slope, traction | Mosaic, or a slope-rated textured tile |
| Shower walls | Low absorption, cleanability | Porcelain or glazed ceramic |
| Accent wall | Appearance | Almost anything, within the substrate's tolerance |
| Tub surround | Low absorption, clean transitions | Porcelain or glazed ceramic |
Format is a labour decision
A large-format tile has fewer grout lines and looks calmer, particularly in a small room — but it demands a substrate flat within a tight tolerance, or the edges will telegraph the unevenness as lippage. That preparation is real work. A smaller tile is more forgiving of the wall but takes longer to set. Neither is cheaper in every case; they simply move the hours to different places.
- Large-format: budget for substrate flattening, not just for the tile
- Offset and herringbone patterns increase waste factor and setting time
- Vertical stack patterns are unforgiving of any wall that is out of plumb
- Mosaic on shower floors is standard because it follows compound slopes
Natural stone in a hard-water region
Marble, travertine and limestone are porous and calcareous, which means they absorb, they need sealing on a schedule, and acidic cleaners will etch them permanently. In much of the Treasure Valley the tap water leaves mineral deposits, and the products people reach for to remove those deposits are exactly the acidic cleaners that damage the stone. It is a solvable problem — but it is a maintenance commitment, and it is worth accepting knowingly.
This guide reflects general construction practice and is educational. It is not a substitute for manufacturer instructions, adopted building codes, or the requirements of your local building authority. Verify anything affecting permits, code compliance or product warranties before relying on it.
Grout: the choice made last and noticed first
- Matched grout quiets a busy tile; contrasting grout emphasises the pattern and every setting error
- Joint width is partly determined by the tile's own edge and size variation, not purely by preference
- High-performance grouts resist staining better but handle and clean differently during installation
- Movement joints at corners and perimeters take colour-matched sealant, not grout
Frequently asked questions
Sources and verification
- Tile Council of North America (TCNA) Handbook — substrate tolerance, format and installation method guidance.
- ANSI A137.1 tile specifications, including dynamic coefficient of friction reporting for slip resistance.
- Tile and grout manufacturer technical data sheets and care instructions for the specific products selected.
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