A term used to describe any kind of material placed under carpet to provide softness when it is walked on, Not only does carpet cushion pro- vide a softer feel underfoot, it usually provides added acoustical benefits and longer wear life for the carpet. In some cases the carpet cushion is attached to the carpet when it is manufactured. Also referred to as “lining,” “padding” or “underlay,” although “carpet cushion” is the preferred term.
