Travertine Roman opus: the laying and ordering guide

Opus and multi-size · 7 min read · updated 5 November 2026 · Written by Tilelico

Four stone sizes repeat on a 120 cm module, crossing one another to hide any repetition. It is the most requested arrangement in travertine.

Real example · calculated by Tilelico

Patio of 7.00 × 6.00 m, Travertine Roman opus, 5 mm joint

WholeCutCut under 100 mmPlanter

This patio shows the point of calculating by size: the order reads as separate lines, not as an overall number of stones. The central planter and the edges cut the module into many thin strips, flagged on the plan: this is where the grid is worth moving before ordering.

Calculated result

Room area: 42.00 m²
Area covered: 36.53 m²
Whole pieces: 229
Cut pieces: 77
Actual need: 306
To order (+12%): 345
Waste with no offcut reuse: 18.8 %
Narrow cuts: 31

Order by size

400 × 600 mm116
400 × 400 mm104
400 × 200 mm63
200 × 200 mm62

Most frequent cuts

77 cuts in 20 different sizes.

C01 · 395 × 198 mm× 12
C02 · 98 × 595 mm× 8
C03 · 98 × 395 mm× 6
C04 · 395 × 398 mm× 5

Setting out and products

Starting point 500 mm from the west wall and 600 mm from the north wall, then a 1,200 × 1,200 mm repeat. Estimated products: 128 kg of adhesive and 12.0 kg of grout.

Reproduce it in Tilelico

1Draw a 7.00 × 6.00 m rectangle, then add in the centre: Planter.
2Choose the covering: Travertine Roman opus, 5 mm joint.
3The module sets the pattern: there is nothing else to pick.
4Set the distribution to “Balanced cuts” and the margin to 12%.

Open this example in the editor

When to choose it

It suits natural stone, indoors or outdoors, when you want an aged look with no obvious alignment.

Best forTravertine and stone sold in lots, patios and large rooms.
Avoid ifThe room is narrow: the 120 cm module has no room to read.

Continue with: Roman opus in 4 sizes: laying a module within a square of three →

Preparing the job

Check that the stone and adhesive suit the intended use, especially outdoors and for your climate. Stone treatment follows the manufacturer’s sheet.

Open several lots and mix the stones to spread shades from the start.

Continue with: Roman opus in 3 sizes: a simple, economical band →

Step by step

Step 1 — Mark a module gridSnap lines at each module pitch in both directions: that is your reference, stone after stone.
Step 2 — Dry-lay one full moduleIt serves as the model for the whole team.
Step 3 — Lay module by moduleSpread adhesive and always follow the same order to avoid placement errors.
Step 4 — Check crossing jointsIn this arrangement, stones overlap neighbouring lines: check alignment along the whole stone.
Step 5 — Cut the edgesCuts do not follow the module’s logic: handle them by reference from the list.

Continue with: Laying an outdoor paver: fall, joint and layout →

Mistakes to avoid

Ordering by area onlyWithout a size breakdown, you end up with too many large stones and not enough small ones.
Improvising the arrangementWithout a grid, accidental alignments appear, and they show once the floor is grouted.

These pointers describe common practice, not imposed rules. The data sheet for your covering and for your installation products always takes precedence, and measurements taken on site are the reference.

Frequently asked questions

Why do dimensions look smaller than the stated sizes?

This module is calculated joint included: the delivered stone is one joint smaller, so the grid lands correctly.

Can another scale be used?

Yes, in the editor, by setting the base square. The design stays fixed and only the dimensions change.

Technical references

This guide describes common installation practices. It does not replace applicable technical documents, manufacturer instructions or measurements taken on site.