General Care, Maintenance, Installation and Warranty Information. Care and Maintenance of Porcelain Tile. Click to Download PDF Installation, Care and Maintenance of Glass Tiles. Click to Download PDF CTL Sample Warranty. Please email firstname.lastname@example.org for a company and project specific warranty after the procurement of materials. Please be sure to include in the request the project name and any order reference information you may have. Click to Download PDF DISCLAIMER. Please note that these are general guidelines only. For specific instructions for your project application, please contact the Sales Consultant.