Floor tiles, whether made of ceramic, porcelain, slate, granite, or marble are held in place by a material called thinset. Thinset is a cement-based building material containing a blend of additives which give it the ability to gently flex under strain. This strain or load can be caused by temperature changes, like the seasons or the weight of a person or object placed on top of the tile.

Sometimes the load can be too much for the thinset when  a heavy object is placed on the tile floor, like a piano.  It's possible to overload an individual tile on the floor. Once the bond between the tile and the thinset is broken, the tile can sheer away. The result is a loose tile held in place by grout surrounding its four sides.

Before installing any type of tile floor, the flooring contractor will survey the sub floor. The sub floor must be rigid enough to support its weight, the weight of the tile flooring, and the weight of the household.

The bond between the tile and the thinset can be strong enough to accept an overload once in a while, but the number of overloads is related to the quality of the thinset. The most expensive thinsets will fail if continually overloaded.

The most common reason for a tile to loosen from its thinset is incorrect installation. Careless flooring contractors tend to tile weak floors. Thinsets need to be mixed to manufacturer specification. If it's too wet or too dry, the thinset will not properly cure. The improper curing results in a weak floor.

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Euro Flooring and Design Center, Inc.

Euro Flooring and Design Center, Inc.
4424 US Highway 19 N.
St. Petersburg, FL 33714
Phone: 727-545-9900

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Flooring in St. Petersburg, FL


Remodeling and Home Design
St. Pete Carpet & Flooring