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What Causes a Floor Tile to Loosen?
Many dwellingowners have asked me, "Why do floor tiles loosen?" It's amazing to me, with the advances in floor preparation and modified mastics, that tiles can still come loose. It's doable to understand why floor tiles come loose without using the assistance of a flooring professional or general contractor. Permit me to tell you why this happens.
First, it is important to understand what holds the tile to the floor. Tiles, whether made of ceramic, porcelain, slate, granite, or marble, are all held in place by a substance called thin set. Thin set is a Portland cement based materials containing a special blend of additives which give the combination the ability to gently flex under strain and return to its original position. This strain, additionally known as load, could be the result of climatic modifications, such because the passing of the seasons, or from a physical nature, reminiscent of the load of an individual or item positioned on the tile.
Sometimes the strain or load can be an excessive amount of for the thin set. If a heavy object is positioned on the tile floor, equivalent to a piano, it may be very doable to overload a person tile. If this occurs, the bond between the tile and the thin set will be broken and the tile can sheer away. As soon as sheered, the tile will never re-bond with the thin set. The result is a loose tile only held in place by the grout surrounding its 4 sides.
Subsequent, the structure of the floor must be considered. Earlier than installing any type of tile floor, the contractor or flooring professional ought to survey the sub floor. The sub floor must be constructed inflexible sufficient to help its own weight, the load of the tile, and the load of the items placed on it. Most local codes state that if the floor is framed with 2x8 floor joists, sixteen" on middle, and sheeted with a 5/8" plywood material, it can be tiled. Keep in mind, earlier than starting any construction project, check with your native building code officials. Higher safe than sorry.
In many properties, the floor just isn't constructed or framed sturdy sufficient to support its own weight and the load of a tile floor. When floors are not framed sufficiently they have a tendency to move perpendicular to the plane of the earth. This up and down motion stresses the bond between the tile and the thin by as applying an excessive amount of weight or load in one area.
The bond between the tile and the thin set might very well be robust enough to accept an overload just a few times. The number of times is directly associated to the quality of the thin set. Inevitably, even the most costly thin sets will fail if subjected to continual overloading.
Final, the most typical reason why a tile will loosen from its thin set is improper installation. Careless contractors tend to tile weak floors. The thin set must be mixed based on manufacturer specification. If blended too wet or too dry, the thin set will not properly cure. This improper curing leads to a weak floor.
Over time, most tiled floors will have a tile pop loose. This is to be expected and can be repaired. If over the life of a floor, many tiles pop loose, a more serious problem is the cause. In my expertise, human error is the cause.
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