- Purchase the required materials for installing the travertine pavers, such as thinset mortar for adhering the pavers to your floor, sanded grout for filling the joints between the pavers and 1/4 inch spacers for spacing the pavers correctly. Measure to the center of the floor and snap a chalk line as a reference mark for laying the travertine pavers. You will end up with a cross in the center of your floor and four quadrants for laying the pavers into. Start in one of the four quadrants and at the center of the floor. Use a 1/4 inch notched trowel to spread the thinset mortar onto the floor. Make sure that the floor is swept and clean before you spread out the mortar. As an extra means of protection, spray the pavers with concrete sealer before you lay them onto the floor; the sealer will prevent staining of the travertine. Lay a 4-by-4 foot area and check the pavers with a hand level. Use a rubber mallet to gently tap the pavers into the mud bed until they become level. Use the 1/4 inch tile spacers between the pavers to space them correctly and evenly. After the pavers have set for 24 hours, use a grout float and sweep grout into the paver joints. Pour the grout directly onto the pavers and push it across the pavers and into the joints. Use a damp sponge to keep the travertine pavers clean. Don't allow the grout to dry on the pavers. Wait 24 hours and seal the grout joints with sealer
