2 Copyright © 2019 by The Carpet and Rug Institute, Inc. Originally published 1982 with revisions issued 1984, 1986, 1988, 1991, 1992, 1993, 1994, 1996, 2002, 2015, and 2018. All rights reserved. Disclaimer The Carpet and Rug Institute (CRI) is the national trade association of carpet and rug manufacturers and suppliers to the industry. The expertise of CRI’s membership comes together to provide unbiased technical, educational, and scientific information about carpet and rugs. The Carpet and Rug Institute assumes no responsibility and accepts no liability for the application of the principles or techniques contained in this standard. Specifying authorities are responsible for reviewing applicable federal, state and local statutes, ordinances, and regulations including mandatory requirements contained in the Occupational Safety and Health Administration (OSHA) Hazard Communication Regulation. CRI 105 - STANDARD For INSTALLATION of RESIDENTIAL CARPET Copyright © 2019 by The Carpet and Rug Institute, Inc. Table of Contents 3 Foreword 7 Acknowledgements 8 General Requirements 9 1.0 Applicable Documen ts and References ....................................................................... 9 1.1 Carpet and Rug Institute References: ........................................................................... 9 1.2 Most recent ASTM Standards: ...................................................................................... 9 2.0 Terminology ............................................................................................................. 9 3.0 Tools and Materials ................................................................................................... 9 4.0 Storage and Handling .............................................................................................. 10 4.1 Storage ........................................................................................................................ 10 4.2 Handling ...................................................................................................................... 10 5.0 Measuring and Planning .......................................................................................... 10 5.1 Seams .......................................................................................................................... 11 5.2 Pile Direction ............................................................................................................... 11 5.3 Layout and Trimming .................................................................................................. 11 5.4 Transitions to Other Surfaces ..................................................................................... 11 5.5 Carpet over Carpet ...................................................................................................... 11 6.0 Testing ................................................................................................................... 11 6.1 Moisture Vapor Emission Rate (MVER) Testing .......................................................... 12 6.2 Relative Humidity (RH) Testing ................................................................................... 12 6.3 Testing for Alkalinity .................................................................................................... 12 7.0 Site Conditions ........................................................................................................ 13 7.1 Substrate Conditions ................................................................................................... 13 7.2 Ambient Temperature and Humidity Suitable Substrates .......................................... 13 7.3 Ventilation ................................................................................................................... 14 8.0 Substrate Preparation ............................................................................................. 14 8.1 Concrete ...................................................................................................................... 14 8.1.1 Moisture Mitigation ................................................................................................................. 15 8.2 Wood ........................................................................................................................... 15 8.2.1 Treated Wood ......................................................................................................................... 15 8.3 Metal ........................................................................................................................... 15 8.4 Resilient ....................................................................................................................... 16 8.5 Radiant Heat Floors ..................................................................................................... 16 8.6 Asphalt ......................................................................................................................... 16 8.6.1 Terrazzo, Ceramic, Marble, Slate and Other Nonporous Surfaces .............................................. 16 8.7 Painted Surfaces .......................................................................................................... 17 8.8 Primers ........................................................................................................................ 17 8.9 Chemical Adhesive Removers and Abatement Chemicals .......................................... 17 CRI 105 - STANDARD For INSTALLATION of RESIDENTIAL CARPET Copyright © 2019 by The Carpet and Rug Institute, Inc. Table of Contents 4 8.10 Sweeping Compounds ................................................................................................. 17 9.0 Product Acclimation ................................................................................................ 17 Broadloom Carpet 18 10.0 Carpet Seaming ....................................................................................................... 18 10.1 Trimming ..................................................................................................................... 18 10.2 Sealing Edges/Seams ................................................................................................... 18 10.2.1 Edge Sealing ............................................................................................................................ 18 10.2.2 Seam Sealing (direct glue down only) ....................................................................................... 19 10.3 Seaming Methods ....................................................................................................... 19 10.3.1 Hot Melt Seaming .................................................................................................................... 19 10.3.2 Hand Sewing ............................................................................................................................ 20 10.4 Proper Seam Characteristics ....................................................................................... 20 11.0 Stretch-in Installation .............................................................................................. 20 11.1 Tack-strip ..................................................................................................................... 20 11.2 Separate Cushion Selection ......................................................................................... 21 11.3 Seaming ....................................................................................................................... 21 11.4 Power Stretching ......................................................................................................... 21 11.5 Amount of Stretch ....................................................................................................... 23 11.6 Finishing at Wall .......................................................................................................... 24 11.7 Transition Molding ...................................................................................................... 24 12.0 Direct Glue Down .................................................................................................... 24 12.1 Layout .......................................................................................................................... 24 12.2 Floor Adhesive Application ......................................................................................... 24 12.2.1 Trowel Selection ...................................................................................................................... 24 12.2.2 Adhesive Application ............................................................................................................... 25 12.2.3 Open/Tack Time ...................................................................................................................... 25 12.2.4 Working Time .......................................................................................................................... 25 12.3 Alternative Adhesive Systems ..................................................................................... 25 12.4 Seam Sealing ............................................................................................................... 26 12.5 Rolling .......................................................................................................................... 26 12.6 Finishing