Patent ID: 7086205

Claim:
A floating laminate floor board having first and second parallel long edges and first and second parallel short edges, comprising: an upper decorative wear layer; a core layer arranged beneath the upper decorative wear layer, the core layer being made of a material that is not as hard as the upper decorative wear layer; a base layer beneath the core layer; a first mechanical locking system comprising a locking strip extending from one of the long edges of the board and a locking groove formed in the material of the core and extending along another of the long edges of the board; a second mechanical locking system on the first and second short edges of the board; the locking systems being configured so as to releasably lock the board to adjacent identical boards in both a vertical direction and a horizontal direction; and an underlay mounted to an underside of the floor board, wherein the underlay extends underneath a portion of the locking strip that extends from the board, and wherein the underlay is arranged such that when the floor board is locked to an adjacent identical floor board, a joint between the underlays is offset from a joint between the floor boards.