Our 3/4" Soft Rubber Tiles can be installed over low pile commercial carpet in a basement. These interlocking tiles are perfect as a basement floor. They help to insulate from the cold and are mold and mildew resistant. Also, if your basement were to become flooded, all you would have to do is pick up the tiles, clean them and allow them to dry. Once dry you can reinstall them. Thes tiles when installing over plush carpet may become separated as the pad under the carpet become depressed. Other than that these tiles are perfect over any hard, flat flooring surface.