Sedimentary Stone

Travertine

Denizli & Afyon, Turkey

ASTM C568 Compliant

Travertine is a terrestrial sedimentary limestone formed by the rapid precipitation of calcium carbonate from mineral-laden hot spring and groundwater. The characteristic pits and voids are formed by gas bubbles and organic matter trapped during formation. The finest travertine comes from Denizli (Turkey) — the world's...

Technical Specifications
Mohs hardness
4–5
Water absorption
0.6%
Freeze-thaw
Excellent — rated
Density
2.45 g/cm³
Cost range $7–15 / sq ft
Price Range $7–15 / sq ft
Applications

Where Travertine is used

  • Pool decks
  • Pool coping
  • Patios
  • Outdoor stairs
  • Bathroom floors
  • Interior flooring
  • Exterior cladding
  • Driveway pavers
Climate Suitability

Regional performance

Excellent in zones 8–11. In freeze zones, use only dense grades with ≤0.5% water absorption and seal every 6 months. Tumbled travertine on pool decks in Florida and Texas has 20+ year track records.

Care & Maintenance

Travertine maintenance guide

Seal with penetrating impregnator every 12–18 months indoors, every 6–12 months for pool and outdoor use. Clean with pH-neutral cleaner — never acid-based products. Fill open voids annually with color-matched epoxy filler if needed. For pool areas, rinse with freshwater after each use to remove salt and chlorine. Power wash outdoors at low pressure (800 PSI) annually.

FAQ

Common questions about Travertine

What is the difference between filled and unfilled travertine?

Filled travertine has its natural pits and voids filled with epoxy or cement grout at the factory, creating a smooth surface. Unfilled (or tumbled) travertine retains the natural holes, giving a more rustic, aged appearance. Filled is better for polished floors and countertops. Unfilled/tumbled is traditional for pool decks and outdoor areas where the texture provides grip.

Does travertine crack around pools?

Well-installed, sealed travertine does not crack around pools. Cracking usually results from: improper installation over an uneven base; zero-joint installation without movement joints; insufficient sealing allowing water intrusion. Install with 3/8" movement joints every 6–8 ft, use flexible mortar, and seal every 6 months for pool environments.

Is travertine safe for pool coping?

Yes — travertine is one of the safest and most popular pool coping stones. When sealed, it is chlorine-compatible, stays cool underfoot (its porous nature reflects heat), and provides natural grip. Specify tumbled or honed travertine coping — never polished. Seal on installation and reseal every 6–12 months.

Geology

How Travertine forms

Travertine is a terrestrial sedimentary limestone formed by the rapid precipitation of calcium carbonate from mineral-laden hot spring and groundwater. The characteristic pits and voids are formed by gas bubbles and organic matter trapped during formation. The finest travertine comes from Denizli (Turkey) — the world's largest travertine deposit — and Tivoli (Italy, source of the Colosseum stone). Turkish travertine accounts for the majority of North American supply, exported in varieties including Classic, Walnut, Silver, Noce Antique, and Chocolate.