Bathroom tiles in the UK range from around £10/m² for standard ceramic wall tiles to £150/m² or more for natural stone such as marble or travertine. Supply costs are only part of the picture — tiling labour runs £35–£60/m² depending on format and surface, adhesive and grout add another £5–£20/m², and wastage (10–20% depending on layout pattern) means you should always order more than your room area suggests.
Choosing the right tile involves matching material to application (walls vs floors), checking slip resistance for wet zones, confirming suitability for underfloor heating if applicable, and selecting a layout pattern before calculating quantities. This guide covers each factor in turn.
Types of Bathroom Tile
Ceramic Wall Tiles
Ceramic tiles are kiln-fired clay body products covered with a glaze. They are the most widely used wall tile in UK bathrooms and are straightforward to cut and fix. Supply cost is typically £10–£40/m² for standard ranges, with designer collections running higher.
Key limitations: ceramic tiles are relatively porous compared to porcelain (water absorption typically 3–10%), which makes them unsuitable for most floor applications. The glaze is also softer, so ceramic is not recommended for high-traffic floors. For walls and splashbacks, however, they are perfectly adequate and meet the requirements of BS EN 14411, the European standard covering ceramic tiles, which classifies products by water absorption group (BIa through BIII).
Porcelain Floor and Wall Tiles
Porcelain is a denser, lower-absorption variant of ceramic, fired at higher temperatures. Water absorption is below 0.5% (Group BIa under BS EN 14411), which makes it suitable for both walls and floors, wet rooms, and external applications. Supply cost runs £20–£80/m² for domestic ranges, with larger format or rectified tiles at the upper end.
For floor use, porcelain should achieve a PEI (Porcelain Enamel Institute) wear rating of 4 or 5 in bathrooms that see regular traffic. PEI 4 covers residential floors with heavy use; PEI 5 is specified for commercial applications. Through-body porcelain (colour consistent throughout the tile body) is more forgiving of chips and easier to repair invisibly.
Natural Stone
Slate, travertine, limestone, and marble are all used in UK bathrooms but require more preparation and ongoing maintenance than ceramic or porcelain. Supply cost ranges from £40–£150/m² depending on species and origin. Natural stone is heavy — marble typically runs 2.5–2.8 kg per m² per mm of thickness — so structural loadings and substrate rigidity must be considered, particularly on timber upper floors.
All natural stone must be sealed before grouting and periodically thereafter to prevent staining and water ingress. Travertine, which has natural voids in its surface, requires void-filling treatment before polishing. Marble and limestone are acid-sensitive, so avoid standard bathroom cleaners containing citric acid or vinegar.
Tile Type Comparison
| Tile Type | Supply Cost (£/m²) | Suitable For | Slip Rating (typical) | Maintenance |
|---|---|---|---|---|
| Ceramic (glazed) | £10–£40 | Walls, splashbacks | R9 if textured | Low — wipe clean |
| Porcelain (polished) | £20–£60 | Walls, low-slip floors | R9 | Low |
| Porcelain (textured/matt) | £20–£80 | Floors, wet rooms | R10–R11 | Low |
| Natural slate | £40–£100 | Floors, feature walls | R11–R12 | Medium — seal annually |
| Travertine | £50–£130 | Walls, floors | R10 (filled) | Medium — seal, fill voids |
| Marble | £60–£150 | Walls, feature floors | R9–R10 | High — seal, acid-sensitive |
| Mosaic (glass/porcelain) | £30–£100 | Walls, shower trays | R10+ | Medium — more grout to clean |
Slip Resistance Ratings
Slip resistance for bathroom floors is governed by DIN 51130, which classifies tiles from R9 to R13 based on inclination testing. The relevant thresholds for domestic bathrooms are:
- R9 — the minimum for any wet area; suitable for bathroom floors that are not regularly inundated with water
- R10 — recommended for standard bathroom floors and shower enclosures with drainage
- R11 — required for shower trays and wet room floors where water pools; also appropriate for step surfaces
Some manufacturers also quote a C classification (C0–C3) for barefoot wet areas under DIN 51097, which uses a different test methodology and is more relevant for shower trays and pool surrounds. An R9 tile may pass C2 for barefoot wet use, but always verify with the manufacturer’s data sheet rather than assuming equivalence.
Planning permission is not required for internal bathroom tiling. However, any electrical work in wet zones (Zones 0, 1, and 2 as defined by BS 7671 and Part P of the Building Regulations) must be carried out by a competent person and may require a Building Regulations notification. Wet zones define minimum IP ratings for any fittings and influence where heated towel rails and extractor fans can be installed.
Adhesive and Grout
Adhesive
Tile adhesive is classified under BS EN 12004. The two most relevant classes for bathrooms are:
- C1 (standard cementitious adhesive) — adequate for wall tiles in dry or low-moisture areas
- C2S1 (improved cementitious, flexible) — required for floor tiles, large format tiles (typically 600×600mm and above), tiles over underfloor heating, and any wet room application where thermal movement or substrate deflection is likely
The S1 designation indicates limited deformability (up to 2.5mm), which accommodates the movement that occurs with underfloor heating cycles. For timber subfloors, a fully flexible adhesive (S2 class) is advisable. Cost: standard C1 adhesive runs £5–£10/m²; C2S1 flexible adhesive costs £8–£15/m² depending on brand and coverage.
Grout
Standard cement-based grout costs £5–£12/m² depending on joint width and application. It is suitable for most wall and floor applications but is porous and can discolour over time in wet areas unless sealed.
Epoxy grout costs £20–£40/m² and offers far superior stain resistance and durability. It is effectively waterproof, does not require sealing, and is increasingly specified for shower enclosures and wet rooms. The trade-off is a more demanding application — epoxy grout has a shorter working time, is harder to remove from tile faces if left to cure, and is not suited to DIY installation without practice. For joints below 3mm, a proprietary narrow-joint epoxy system is required.
Tile Sizes and Large Format Trends
Standard wall tiles in UK bathrooms have traditionally run 200×300mm and 300×600mm. Floor tiles commonly used 300×300mm and 450×450mm. The current trend is toward much larger formats:
- 600×600mm — now the most common floor tile size in new build and renovation; fewer grout lines create a cleaner appearance
- 1200×600mm — increasingly used on both floors and walls; requires a perfectly flat substrate (typically within 3mm over 2m) and a flexible C2S1/S2 adhesive
- 1200×1200mm and larger — available but demanding to install; levelling systems (tile clips and wedges) are almost always required
Larger tiles are unforgiving of substrate unevenness. Any hollow spots or adhesive voids beneath a large porcelain tile will eventually cause cracking under point loads. A solid-bed fix (full coverage adhesive, no voids) is mandatory.
Layout Patterns and Wastage
The pattern in which tiles are laid affects both the visual result and the quantity you need to order. Wastage must be factored into your order before purchasing.
- Grid (straight stack) — simplest to set out and cut; minimum wastage at 10%
- Brick bond (offset 50%) — classic running bond; 10% wastage; requires cuts at every row end
- Third bond (offset 33%) — increasingly specified with large format tiles to avoid the lippage risk of a 50% offset on long tiles; 10–12% wastage
- Diagonal (45°) — square tiles laid at 45 degrees to the walls; 15% wastage due to edge cuts; visually enlarges smaller bathrooms
- Herringbone — rectangular tiles arranged in a V pattern; striking but labour-intensive; 15% wastage minimum, often closer to 20% for smaller rooms with many cuts
- Chevron — similar to herringbone but tiles are cut at an angle so the pattern aligns precisely; requires tiles cut specifically for the pattern or pre-cut chevron tiles; 15–20% wastage
As a working rule: order 10% over your measured area for straight patterns, 15% for diagonal or herringbone, and 20% for small mosaic formats or complex rooms with many cuts. Always buy from the same batch number to avoid colour variation between firings.
Labour Costs
Tiling labour in 2026 runs at the following approximate rates for wall and floor work respectively:
- Wall tiling: £35–£55/m² for standard ceramic or porcelain; higher for mosaic or small formats (£50–£80/m²)
- Floor tiling: £40–£60/m² for porcelain up to 600×600mm; £55–£75/m² for large format tiles requiring levelling systems
- Wet room tanking: add £15–£30/m² for application of a liquid waterproofing membrane before tiling
These rates typically exclude materials. In most cases, the tiler will supply adhesive and grout and add a mark-up; confirm this in advance. Day rates for an experienced tiler run £200–£300/day; productivity depends heavily on tile size and complexity — a tiler working with 300×300mm wall tiles in a standard bathroom will typically cover 8–12m² per day, compared to 5–8m² with large format floor tiles requiring careful levelling.
Practical Checklist Before You Order
- Measure carefully — calculate net area, then apply the wastage factor for your chosen pattern
- Check the substrate — cement board or tile backer board is recommended over plasterboard in wet zones; plywood requires priming
- Confirm underfloor heating compatibility — specify the UFH system’s maximum surface temperature and match it to the adhesive data sheet
- Verify slip rating — obtain the manufacturer’s DIN 51130 R-rating for floor tiles; do not rely on descriptions such as “anti-slip”
- Plan wet zone electrical work separately — any socket, light fitting, or heated rail within Zone 1 or 2 requires a qualified electrician
[!tip] Batch Numbers Always record the batch (or “shade”) number printed on tile boxes. If you need to re-order after the job starts, mismatched batches can be visually obvious even under the same product name.
