Carpet 
Tile
The main advantage of carpet tile is that you can replace a damaged or worn area without having to replace the whole carpet. Tiles from underneath furniture, for example, can be swapped with those in high-traffic area to even out wear.
They also allow easy access to under-floor wiring or plumbing. Extra replacement tiles should be purchased with the initial installation, as those purchased at a later date will most likely be a different dyelot resulting in a slightly different color than what was originally purchased.
The pile on carpet tile is not as dense or thick as that in rolled carpet. It is an excellent choice for both residential and commercial applications, however it cannot be installed over top of undercushion.
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