Room & Tile Details
Standard: 2-3mm
10% recommended for straight lay
Results
Enter details and click Calculate to see results
UKUK Building Regulations
References & Sources
Standards Cited
- BS EN 14411 — Ceramic tiles — Definitions, classification, characteristics, assessment and verification of constancy of performance and marking
Defines standard ceramic tile sizes and classifications used in the common tile sizes data
Formulas Used
- Effective Tile Area:
tileArea = ((tileLength + gap) / 1000) x ((tileWidth + gap) / 1000)
Source: BS EN 14411 tiling practice — Grout gap is added to each tile dimension to account for joint width - Tiles per m²:
tilesPerM2 = 1 / effectiveTileArea
Source: Industry standard calculation - Total Tiles with Pattern and Wastage:
total = ceil(baseTiles x max(wastageMultiplier, patternMultiplier))
Source: Industry standard practice — The higher of user wastage or pattern wastage is applied (not both). Pattern multipliers: straight 1.0, diagonal 1.15, herringbone 1.20
Key Assumptions
- Diagonal tile laying adds 15% extra wastage for angled cuts — Manufacturer tiling guidance
- Herringbone pattern adds 20% extra wastage for complex cuts — Manufacturer tiling guidance
- Standard box contains 6 tiles (user should verify with actual product) — Common manufacturer packaging
- Default 10% wastage for cuts and breakages on straight lay — Industry standard practice