Can we install carpet tiles over existing carpets?

We recommend removing existing carpets before installing new carpet tiles. It can be possible to install carpet tiles over very low-pile or commercial existing carpet. Still, ideally, carpet tiles should be installed on a smooth, clean, flat surface to ensure proper adhesion and no gaps between tiles. If you are installing over a high pile carpet with a plush pad, we recommend placing a 1/4" plywood board over the carpet to keep the tiles from separating when walked over.