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Self-Adhered Crack-Isolation and Sound-Control Membranes

Introduction

Self-adhered crack-isolation and sound-control membranes complying with ANSI A118.12, also known as Peel and Stick or self-adhered membranes, have become extremely popular in the tile industry as a solution to correct and prevent reflection of shrinkage cracks and control joint (movement) in concrete slabs through the tile assembly, as well as to control transmission of sound through tile assemblies. Self-adhered membranes have unique characteristics, such as extreme flexibility and self-adhesive qualities that make this type of membrane an efficient and cost effective problem solver for tile installations. However, these unique characteristics also make certain considerations, such as construction of tile movement joints and correction of concrete with excessive moisture, much more critical than in traditional installations where tile is adhered directly to a concrete substrate. Some of the special considerations and cautions are on the pages to follow. The membranes should not be to used in lieu of TCNA Handbook method EJ171 . Please note that per TCNA Handbook method F125, movement joints are required.

Photo courtesy of NAC Products Inc.

Photo courtesy of NTCA Five-Star Member Christian Brothers Flooring & Interiors NTCA Five-Star Project of the Year Commercial Grand Prize Award

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NTCA Reference Manual | 2024 / 2025

Chapter 4 | Membranes