2024-25_NTCA_Reference_Manual_dig_dwnld

Table of Contents

Reference Manual and Specifications..........................................................................1 Limitation on Use and Disclaimer................................................................................1 2024 NTCA Technical Committee Roster.................................................................2 - 3 Technical Committee Changes to the 2024-25 NTCA Reference Manual......................... 5 CHAPTER 1 PRE- AND POST-INSTALLATION CONSIDERATIONS .................................11 TCNA Handbook Environmental Exposure Classifications......................................................................................................14 Temporary Protection for Tiled Surfaces (A108.02-3.1.5 and 3.1.6) - Sample Letter for Contractor............................................. 16 Stone, Ceramic, Glass Tile Inspection Checklist. ..................................................................................................................18 Modular Construction........................................................................................................................................................20 Movement Joints.............................................................................................................................................................. 22 Movement Accommodation............................................................................................................................................... 23 Movement Joints – Notes to the Tile Contractor – Sample Letter for Contractor .................................................................. 24 Prefabricated Movement Joints (PMJs)............................................................................................................................... 26 Profiles ..........................................................................................................................................................................28 Profile Issues for Tile & Stone Installations..........................................................................................................................30 Moisture Emissions Installation Precautions....................................................................................................................... 34 Coefficient of Friction and the DCOF AcuTest ® ...................................................................................................................... 36 How Sealers, Treatments and Cleaning Products Can Alter the Dynamic of Coefficient of Friction (DCOF) in Floor Tile..................37 CHAPTER 2 SUBSTRATES.................................................................................... 39 Proper Preparation and ANSI Requirements for Thin-Set Method Tile Installation.................................................................... 42 Proper Preparation and ANSI Requirements for Thin-Set Method - Notes to the Tile Contractor – Sample Letter for Contractor _43 General Statement on Deflection........................................................................................................................................ 44 Ceramic Tile and Stone Installations over Concrete Substrates............................................................................................. 46 Floor Flatness................................................................................................................................................................... 48 Division 3 versus Division 9 Floor Flatness Tolerances – ASCC Position Statement #6.............................................................50 Concrete Flatness and Level.............................................................................................................................................. 52 Floor Flatness Requirements – Request for Information – Sample Contractor Letter.............................................................. 53 Concrete Substrate Issues................................................................................................................................................ 54 Curing Compounds, Release Agents, and Sweeping Compounds...........................................................................................58 Testing for Curing Compounds – Sample Letter for Contractor .......................................................................................... 59 Interior Horizontal Installation of Tile Over Exterior Glue Plywood (EGP) Introduction..............................................................60 Interior Installation of Tile Over Exterior Glue Plywood (EGP)..................................................................................................61 Ceramic and Stone Tile Installation Over Engineered Wood Structural Floor Assemblies..........................................................63 Summary of Subfloor (Plywood or OSB) Design and Construction Guidelines for Tile Installation............................................... 64 Technical Background – Engineered Wood Structural Floor Assemblies.................................................................................65 General Contractor’s Guide for Ceramic and Stone Tile Installations Over Wood Structural Floor Assemblies.............................68 Glossary of Terms for Engineered Wood Products................................................................................................................. 70 Tile Over Wood Sub-Floors – Notes to the Tile Contractor – Sample Letter for Contractor ...................................................... 71 Tile and Stone Applications on Equivalent Gauge (EQ) Steel Framing.......................................................................................72 Tile Over Steel Stud Assembly – Sample Letter for the Contractor ......................................................................................... 73

NTCA Reference Manual | 2024 / 2025

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