Patent ID: 7775007

Claim:
A floating laminate floor board having four edges, comprising: an upper decorative wear layer; a core layer arranged beneath the upper decorative wear layer, the core layer being formed of a material that is not as hard as the upper decorative wear layer; a base layer beneath the core layer; the upper decorative wear layer and the core layer being arranged so as to define a principal plane of the board; a first mechanical locking system for locking the board to an identical board in both a vertical direction and a horizontal direction, the first mechanical locking system including: a tongue extending from a first edge of the board in a direction of the principal plane, the tongue being formed of the material of the core layer, a tongue groove extending into a second edge of the board in the direction of the principal plane, the tongue groove being formed of the material of the core layer; a locking strip extending from the second edge of the board having a protecting locking element; a locking groove extending along an underside of the board set back from the first edge of the board; a second mechanical locking system on third and fourth 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 a sealing device or a sealing compound is applied in the first mechanical locking system, wherein the sealing device or sealing compound is applied between the locking strip and the adjacent board and wherein the locking strip is flexible wherein the locking groove is open to a rear side of the floor board, wherein the strip of the floor board projects under the base layer of the identical board.