Abstract: A floorboard for making a resilient floor by joining to at least one neighbouring, substantially identical floorboard (1?), so that joined upper neighbouring parts (7, 7?) of the edge portions of the floorboards (1, 1?) together define a joint plane (F), perpendicular to the main plane (P) of the joined floorboards, comprises a resilient base (10) which is arranged on the underside of the floorboard (1, 1?) and which extends beyond said joint plane (F), supporting layer (1 1) which is arranged between the underside of the floorboard (1) and the resilient base (10), and a locking system, which is arranged along at least two parallel edges (25a, 25b; 26a, 26b) of the floorboard (1) and integrated with the floorboard, for mechanical joining, vertically (D1) and horizontally (D2), of the floorboard (1) to the neighbouring, substantially identical floorboard (1?). Furthermore, a kit of parts and a method for installation of resilient floors as well as a method for manufacturing resilient floors are disclosed.