If the finish or wax has not become discolored, cracked, or otherwise worn out, and you like its appearance and feel, you may simply leave it on the travertine floor rather than applying a sealer. The finish or wax should provide protection against spills and scratches on its own.

If the travertine is heavily soiled and mild cleaning products can’t do the job, use an alkaline cleaning solution such as diluted bleach. These are not recommended except when absolutely necessary, as the harsh chemicals can mark the stone.

Rinse at least three times, then keep rinsing until the water has no traces of color, smell, or particles.

Water-based and solvent-based sealers are both safe to use on travertine. Water-based sealer is more environmentally friendly and may apply better to travertine in damp locations.

To test the protective abilities of the sealer, after it has sat for 24 hours, apply a few drops of water to the sealed travertine. Blot after five or ten minutes. If the travertine does not return to its original, dry color within five minutes, the sealer may not provide enough protection. Keep in mind that you can apply multiple coats of sealer to provide additional protection.

To test the sealer, drop a few droplets of water in several locations on the travertine. Let sit for five to ten minutes, then blot dry. If the travertine doesn’t return to its original, dry color within two or three minutes, apply another coat of sealer.

Non-slip undersides are recommended to prevent the rug from slipping on the travertine.

Never use vinegar or other acidic cleaners, which can etch patterns even into sealed travertine.