![]() What the TCNA Handbook says about movement joints Movement joints are not optional – they are required. You must allow for this movement in all residential and commercial projects. The lack of movement joints gives the tile assembly no room to expand, causing the tile to pop up or “tent,” most times in the middle of the floor. Many installations that appear to be well done, will fail. This is true especially on floors with ceramic, porcelain, glass, and natural stone tile that is subject to sunlight, in-floor heat, and/or moisture. Without movement joints, failure is lurking in the shadows, waiting to strike. However, they are one of the most important listings in the Tile Council of North America ( TCNA) Handbook under Method EJ171. Sadly, movement joints are probably the least-used, most-misunderstood, and often-eliminated part of a tile installation. But who is responsible to make this happen? The really sad part of this situation is that the installer did an excellent job, except for the lack of any expansion joints.īy integrating these “stress relievers” into the tile assembly, expansion and contraction takes place without compromising its integrity.
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