Notes from the Studio · Material
Travertine or marble?
The Logic of Natural Stone
It is one of the questions we are asked most often at the start of a bathroom project: “should we use travertine or marble?” The right answer is usually neither — the right answer is how the space will be used, and which character is being sought.
Both are natural, both are beautiful, and both cause problems in the wrong place. Below we set out how each actually behaves, what determines the decision, and what we watch for in practice.
Travertine: porous and warm
Travertine is a porous sedimentary stone. Those pores can be filled and polished (filled travertine) or left in their natural, matt state (unfilled travertine). The second builds a warm, raw atmosphere with the slight texture you feel under the hand and its earth tones — we favour it particularly in bathrooms where a spa feeling is wanted, or on floors opening to the outside, because it offers a natural resistance to slipping.
Another practical advantage of travertine is that it forgives marks. A matt, textured surface does not betray the small traces of daily use the way a polished one does. Against that, a porous structure left unfilled is also a surface dirt can settle into; in a kitchen, where it meets oil, that has to be taken into account.
Marble: sharp and theatrical
Marble, by contrast, is a metamorphic stone; its veining is sharper, and polished, its surface takes on a clarity close to a mirror. Its character is more formal and more theatrical than travertine’s — a single large marble slab gives a space an immediate focal point.
But that clarity comes at a price: marble is more sensitive than travertine to products containing acid (lemon, vinegar, limescale remover). Contact with acid leaves an etch mark on a polished surface; this is not a stain but a dulling of the surface, and it does not clean off. Living with marble means accepting that possibility from the start.
The real decision is not the stone but the finish
Most people choose the type of stone and think the job is done; yet the same stone behaves entirely differently according to its finish. In practice we discuss three options:
- Polished — deepens the colour, sharpens the veining, reflects light. The most striking option, and also the one that shows marks and etching most.
- Honed (matt) — smooth but not glossy. It calms the colour a little, shows everyday marks noticeably less, and is less slippery in wet areas. This is the finish we recommend most often in spaces that are lived in.
- Tumbled / brushed — gives the surface a light texture and a raw character. On floors and thresholds to the outside it has the advantage of grip.
When a client says “I want marble, but the maintenance worries me”, the answer is usually not to change the stone but to change the finish.
Which one, and where?
- Wet floors and inside showers — unfilled travertine or a honed finish. The priority here is not appearance but grip underfoot when wet.
- Thresholds to the outside — travertine; both for grip and for the natural relationship its texture strikes with the outdoors.
- A signature surface (a single wall, an island worktop, a fireplace) — marble. Because this is the one surface in the space that takes the eye, a stone with strong character finds its place here.
- Kitchen worktops — if tolerance for maintenance is low, porcelain rather than natural stone. If natural stone is wanted, a honed finish and a sealer are essential.
- Large floor areas — porcelain is more realistic in most projects on both budget and maintenance; natural stone reads more powerfully on limited, chosen surfaces.
Our practical rule: travertine on wet floors and thresholds to the outside; marble on the single wall or island worktop that will be a space’s signature surface. Budget is of course a factor, but the first question is never budget — it is how that surface will be used in daily life.
How should a slab be chosen?
Natural stone is not a catalogue product. Two slabs sold under the same name can differ markedly in veining density and tone; the decision is therefore made by seeing the slab itself, not a photograph. The sample also has to be seen in the light of the space — a stone that reads warm under showroom lighting can turn grey in a north-facing bathroom.
- Continuity of veining — a vein running from worktop to splashback is only possible if the slabs were cut from the same block. That decision is made at the point of purchase; there is no putting it right afterwards.
- The cutting plan — which way the veining will run is determined before cutting. Once cut, there is no way to correct it.
- Wastage — natural stone can carry cracks, fissures and shifts in colour; slightly more material than required is set aside.
- Grout and filler colour — a pale grout against a dark stone is, over time, the detail that draws the eye most.
Where does the difference in cost come from?
The generalisation that “marble is expensive and travertine is cheap” does not hold. There is a wide range within both groups; what sets the price is not the name of the stone but how rare that particular slab is. The items that actually move the budget are these:
- The slab itself — blocks whose veining is sought after, and which come out in limited numbers, are markedly more expensive.
- Fabrication and cutting — mitres, vein matching, the worktop edge detail and cut-outs are not a small item alongside the price per square metre.
- Wastage — when continuity of veining is wanted, the usable area falls, which increases the quantity purchased.
- Transport and installation — large-format slabs are a load that has to be planned separately, both to move and to set in place.
This is why concentrating natural stone on the one surface that will really be seen, rather than spreading it across large areas, gives a better result on both budget and effect.
Maintenance: the plain truth
Natural stone needs looking after, but not frighteningly so. Three things are enough: that an impregnating sealer has been applied and is renewed over time, staying away from acidic cleaning products, and not leaving spills to sit. A pH-neutral cleaner is sufficient for daily use.
There is also a question of acceptance: natural stone acquires a lived-in quality over time. If you see those marks as faults, natural stone may not be the right material for you; if you see the patina as part of the stone’s character, it only grows better over the years.
We have written separately about where, and in what measure, we use strongly coloured stones — Elazığ Vişne and Calacatta Viola among them — in wine-toned stones. For the stone’s relationship with light see lighting layers, and to see at which stage of the process material decisions are taken, the Process & Budget Guide.
In the end either can be the “right” stone — the question is which one suits the character of your space, the way you use it, and your tolerance for maintenance.
Frequently Asked Questions
Is travertine slippery on a wet floor?
Unfilled (honed) travertine, with its naturally porous surface, is less slippery than filled travertine or polished marble; that is why we prefer it in wet areas.
Can marble be used in a bathroom?
It can, but it needs a regular impregnating sealer and the avoidance of acidic cleaning products; otherwise the surface will dull and stain.
Marble or travertine for a kitchen worktop?
Both are natural stone and therefore open to staining. In a kitchen what matters more than the type of stone is the finish: a honed surface forgives everyday marks far better than a polished one. For a kitchen that needs to be maintenance-free, porcelain is a more realistic choice than natural stone.
Does natural stone stain?
Most stains come from oil or acid entering the pores of the stone and, treated early, largely come out. The real and lasting damage is acid etching — lemon, vinegar and limescale remover leave a dull mark on a polished surface, and that can only be corrected by re-polishing.
How often should the sealer be renewed?
It would be wrong to give a fixed interval; it depends on use and on the product. The practical test is this: if a few drops of water left on the surface quickly leave a dark mark, the protection has worn thin.
Is choosing porcelain instead of natural stone a defeat?
No. Porcelain products today are made in large formats with convincing veining; for someone with a low tolerance for maintenance it is often the right choice. We assess both options against how the space will actually be used.