Resilient floor

A method of assembling resilient floorboards, wherein the floorboards each include a core made of a thermoplastic material, each floorboard comprises a mechanical locking system for vertical and horizontal locking to an adjacent floorboard, wherein the mechanical locking system is integrally formed in one piece with core, wherein the mechanical locking system comprising a first device at a first edge, and a second device at a second edge, wherein the method comprises:

• connecting an adjacent edge of the first floorboard to a juxtaposed edge of a third floorboard in another row by angling;
• positioning the first edge of a first floorboard juxtaposed the second edge of a second floorboard so that the first device of the mechanical locking system overlies the second device, the first edge having an outermost surface closest to the second edge of the second floorboard;
• bending the first floorboard along the first edge so that the first edge has an axis of curvature that is perpendicular to the second edge of the second floorboard, the curvature being convex toward the bottom surface of the floorboards;
• applying a force on a first part of the first edge, wherein at said first part of the first edge said first device is pushed into said second device to obtain a vertical and horizontal mechanical locking of a part of the first and second edges;
• and
• applying a force to a new part of the first edge, which new part is adjacent to said first part to reduce the overall force required to mechanically lock the first edge to said second edge of the second floorboard, and repeating this step until the whole first edge is vertically and horizontally locked to said second edge.