As an Italian freshwater sedimentary limestone, Travertin Navona is acid-sensitive. With a Mohs hardness of 4.5–5, medium water absorption (markedly lower when filled than the 2.0 % unfilled) and pronounced acid reactivity, the stone requires deliberate care and consistent sealing. These points should be deliberately taken into account in the choice of material — Travertin Navona is a deliberately chosen design material with a classic Italian feel, not a maintenance-free all-rounder.
For interior applications we recommend careful silane- or polysiloxane-based sealing at first installation. On polished surfaces we recommend refreshing every 1–2 years, and checking every 6–12 months in heavily used areas. This markedly more frequent refreshing than with hard stones is typical of travertine and marble.
Daily care is carried out with a pH-neutral natural stone cleaner and a soft cloth or microfibre mop. Clear warm water is usually sufficient. Acidic cleaners (vinegar, citric acid, bathroom cleaners, descalers) are to be STRICTLY avoided — they attack the travertine immediately and leave dull etch marks that can only be removed by professional re-honing. Cola, wine, tomato sauce and citrus fruits can also leave etch marks on untreated surfaces — blot spills immediately with a dry cloth.
For kitchen worktops, Travertin Navona is suitable only with qualifications — it is not fully acid-resistant and not fully cut- and scratch-resistant (Mohs hardness 4.5–5 versus 7+ for granite/quartzite). Heat resistance is given, but hot pans should not be set down directly (use trivets). For intensively used professional kitchens we recommend alternative hard stones. For an elegant designer kitchen with a classic Italian feel and careful maintenance, however, Travertin Navona can be very coherent — particularly for Mediterranean or classic schemes with a deliberate acceptance of patina.
The surface finishes currently held in stock are listed in the »Finishes« block further down. Acids or acidic cleaning products lead to visible dull etch marks particularly quickly on a polished surface — take the utmost care with bar counters in restaurants or bars.
The filled pores remain largely stable over the years, but under mechanical load can show small chips at individual fill points — these can be professionally re-filled and are not a material defect. For barefoot applications such as bathrooms, filled and honed is the more hygienic choice.
For external applications, Travertin Navona with a filled surface is NOT recommended — DNSA classifies polished external stability as non-durable. UV exposure and weathering lead over the years to visible loss of gloss. For external applications, unfilled travertine surfaces (with open pores) are rich in tradition; Travertin Navona as a filled variant is, however, explicitly optimised for interior applications.