Dry Layout Required. Suitable For Dry Installations Only. Not Suitable for High Heat Applications. Product MUST be installed in accordance with current TCNA Handbook Stone Methods. Dry laying of this product prior to installation is required. Inherent voids may be present in the stone that will not be filled during production. This is intended to be part of the natural aesthetic of this product. White Mortar is recommended for natural stone. This natural stone tile has been pretreated at the factory with FILA MA96. Corda Should Be Carefully Bag Grouted or Left Ungrouted. Seal and utilize a grout release prior to grouting