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Technical Committee Changes to the 2024-25 NTCA Reference Manual

The NTCA Technical Committee is comprised of leading experts in the tile, stone and allied products industry who continually work to update, revise and add new documents to the NTCA Reference Manual . The NTCA Technical Committee meetings are held twice a year and are open to the public. The NTCA encourages your attendance and participation in the important work of the Committee.

Changes to the 2024-25 NTCA Reference Manual are made at the discretion of the NTCA Technical Committee members serving on the Committee. See the NTCA Technical Committee Roster on pages 2-3.

One of the most significant adjustments in this edition of the NTCA Reference Manual is the new, easy-to-read font and the reorganization of the chapters. Additionally, certain documents have been relocated from their former sections to new chapters. This revised structure of the NTCA Reference Manual will facilitate a seamless progression for the end user, guiding them from the initiation of a project to its successful completion.

A special thank you to Dan Lambert of Lambert Tile & Stone and Becky Serbin, NTCA Education and Curriculum Director, for the countless hours they have spent and continue to spend going through the editorial changes of this edition.

EDITORIAL UPDATES Chapter 1 Pre- and Post-Installation Considerations....................................................................................................... 11 Chapter 2 Substrates..................................................................................................................................................39 Chapter 3 Backer Boards and Underlayments.................................................................................................................81 Chapter 4 Membranes . ..........................................................................................................................................103 Chapter 5 Material-Specific Products and Installation................................................................................................... 119 Chapter 6 Natural Stone Installations...........................................................................................................................151 Chapter 7 Thick-Bed Method Installations.................................................................................................................... 175 Chapter 8 Thin-Bed Method Installations.....................................................................................................................185 Chapter 9 Specialized Installation Procedures.............................................................................................................219 Chapter 10 Grouts. ....................................................................................................................................................279 Chapter 11 Maintenance.............................................................................................................................................315 Chapter 12 Precautions............................................................................................................................................. 329 Chapter 13 Glossary.................................................................................................................................................. 339 NEW Gauged Porcelain Pavers on Pedestals Introduction.....................................................................................................248 Pavers on Pedestals................................................................................................................................................. 250 Factors Affecting Curbless Showers for the Design Professional....................................................................................264 1/2" x 1/2" x 1/2" Notch Trowel Precautionary Statement...............................................................................................1981 Modular Construction.................................................................................................................................................20 Prefabricated Movement Joint Profiles (PMJs).............................................................................................................. 26 Shower Floor Use and DCOF Ratings Precautionary Statement......................................................................................252 Zellige Tile Installation Challenges and Considerations.................................................................................................128

NTCA Reference Manual | 2024 / 2025

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