One of the responses from manufacturers is that the installers didn t use enough adhesive.
Carpet tile edge curling.
The causes of curling and cupping can range.
A carpet or rug should lay flat all around regardless of whether it sits on tile.
It is not.
For every action in this case an uneven stress level in the layers of the tile there is an equal and opposite reaction which is the curling of the tile edges.
If you cut a small square out of the middle of a curling carpet tile and lay it on a perfectly flat surface like a glass top table that small square s edges will also curl.
If you cut a small square out of the middle of a curling carpet tile and lay it on a perfectly flat surface like a glass top table that small square s edges will also curl.
Carpets that curl up at the corners are a tripping hazard.
Cupping is similar in that the center part of the tile pulls up the corners.
It s up to the inspector to figure out what is triggering the problem in the carpet tiles.
The adhesive used on carpet tile is pressure sensitive and is only supposed to stabilize the product on the floor laterally.
For every action in this case an uneven stress level in the layers of the tile there is an equal and opposite reaction which is the curling of the tile edges.