Answer: Our Travertine Pavers can be laid on top of concrete either with the sand-set (dry-set) method or mud-set (wet-set) method.
In freeze/thaw climates, sand-set is the only recommended installation method. If you need to mortar the travertine, use a flexible mortar such as Flex-Bond.
You can find more detailed information for both methods on our installation page:
Guidance for French Pattern installation can be found here:
French Pattern Layout