Travertine is a stone used for floors, countertops, walls, and backsplashes. This stone is porous and easily stains unless the pores are filled with a penetrating sealant that resists splashing water. This is the way to seal travertine.
Steps

Step 1. Start by cleaning the travertine surface
If there are any stickers on it, please remove them before cleaning.

Step 2. Clean the travertine surface with a neutral detergent and a microfiber mop
If the surface is heavily soiled, you can use an alkaline detergent to remove dirt and grease.

Step 3. Wipe the travertine dry with a cotton cloth after cleaning
Then dry the surface for 24 hours.

Step 4. Apply a penetrating sealant to the travertine using a piece of woolen cloth
Fill your pores completely. Remove excess sealant.

Step 5. Wait until the first coat of sealant is completely dry
Water based sealant dries longer than solvent based sealant.

Step 6. Apply a 2nd coat of penetrating sealant to the travertine surface

Step 7. Buff the surface with a clean cotton cloth after the second coat has dried
This will remove streaks and sealant residues.

Step 8. Fill all grooves by adding sealant to the joint area, then buff dry again

Step 9. Make sure the sealant is completely absorbed and dry before using the surface for intensive walking or other use
Advice
- Thoroughly clean and compact the travertine every year or every two years.
- Open windows and doors so that the area you are working in is well ventilated.
- To maintain the finish, use a microfiber mop, warm water and a neutral detergent if thorough cleaning is required.
Warnings
- Acidic substances such as citrus fruits, vinegar, wine and soda will corrode or destroy travertine. Remove these substances from the surface as soon as possible. It is also important to perform regular maintenance to seal the travertine surface, as this will keep the acid on the surface longer and less damage to the travertine.
- Do not use a cover sealant. It is scratched or torn. In addition, the porous structure of the stone can provoke the appearance of air bubbles and the accumulation of dirt in them. Penetrating sealants fill the pores and become part of the stone, protecting it.