Imagine building a tower with blocks. It looks strong and beautiful. But if the table underneath starts moving, the tower may crack or fall. The same thing can happen with tile floors. A floor may look perfect when it is new, but small movements underneath can cause problems later.
Read More: https://logcla.com/blogs/1624586/How-a-Tile-Uncoupling-Membrane-Protects-Your-Flooring-Investment