Opus Roman Pattern — 16x16, 16x24 & 24x24
This Opus Roman variant simplifies the modular layout down to three large-format tile sizes — 16"x16", 16"x24", and 24"x24" — dropping the 8"x8" and 8"x16" pieces found in the full 5-size Opus Roman pattern for a bolder, less busy look with fewer, larger pieces.
Last updated: 2026-07-07
3-Size Opus Roman Pattern
Opuslay — tile layout worksheet- Room:
- 3 m × 2.5 m
- Units:
- Metric (cm / m²)
- Anchor:
- Left · Top
- Layout angle:
- Straight
- Tile colours:
- Single colour
Material breakdown
| Format | Qty / Pattern | Share | Qty / Room | Area / Room |
|---|---|---|---|---|
| 60x60 cm | 1 | 47.4% | 14 | 3.68 m² |
| 40x60 cm | 1 | 31.6% | 12 | 2.28 m² |
| 40x40 cm | 1 | 21.1% | 12 | 1.54 m² |
| Total | 3 | 100% | 38 | 7.50 m² |
What you'll need to buy
Tiles to buy
| 40x40 cm | 12 tiles | 1.92 m² |
| 40x60 cm | 12 tiles | 2.88 m² |
| 60x60 cm | 12 tiles | 4.32 m² |
Total 36 tiles · 9.12 m² (incl. 22% cuts & breakage)
Adhesive & grout
- Thin-set adhesive: ≈ 40.5 kg (2 × 50 lb bags) — recommended trowel: 12mm notch, large format
- Grout — the tile sets the joint width, not you:
- ≈ 1.3 kg (1 × 10 lb bag) — 3mm joint, rectified / tight-set tile
- ≈ 2.2 kg (1 × 10 lb bag) — 5mm joint, natural or non-rectified tile
Adhesive: allow a little over on an uneven substrate, or if you back-butter large tiles — both eat more than a flat bed.
Grout: the 25 lb bag is the usual size (10 lb for small jobs). Buy it in one go and stick to a single bag size: bags from different batches can dry to slightly different shades.
It's the tile that decides the joint, not the setter — dry-lay a section to find your width. Assumes 9.5mm tile depth; adjust for your product — thicker tiles need more.
Share & export
Save the 3-Size Opus Roman Pattern layout to your moodboard, or send the link to your tiler — it reopens with your room dimensions.
About the 3-Size Opus Roman Pattern
Reducing an Opus Roman module to three large sizes became more common as porcelain manufacturing allowed for bigger, more consistently calibrated tile, letting installers skip the smaller pieces that traditionally filled the gaps in stone-based Opus layouts.
This simplified module is sometimes marketed as a "large-format modular pattern" rather than by the Opus Roman name directly, though it follows the same fixed-repeat principle. For spaces where elongated proportions suit the aesthetic better than large squares, the plank-format Opus Roman variant offers the same reduced-size simplicity applied to narrower, wood-leaning tile.
Frequently Asked Questions
Is a 3-size Opus pattern easier to install than the 5-size version?
Generally yes — fewer sizes means fewer transitions to plan and cut around, though the layout still requires more planning than a single-size pattern.
How much waste should I allow for a 3-size Opus pattern?
A 10-15% waste allowance is typical, similar to other modular multi-size layouts.
Why use only 3 sizes instead of the full 5-size Opus Roman module?
A 3-size version gives a bolder, more contemporary look with larger, more consistent tile, which some installers and homeowners prefer over the busier look of the classic 5-size Opus Roman pattern.
Does this 3-size layout still count as an Opus Roman pattern?
Yes — it follows the same core principle of a fixed, repeating multi-size module; it's simply a reduced variant using only the three largest sizes from the full Opus Roman set.