A set of essentially identical floorboards each including a front face and a rear face extending in the horizontal plane, a core, and a surface layer, a mechanical locking system is arranged at least at two opposite edges for connecting a floorboard with an adjacent floorboard in a horizontal and a vertical direction, said mechanical locking system being configured for connecting the floorboard with the adjacent floorboard by vertical folding, wherein one of said opposite edges is provided with a horizontally extending protrusion at an upper edge, and wherein said protrusion is configured to overlap a surface groove at an upper edge of the other of said opposite edges, such that two connected and adjacent floorboards have upper overlapping edges.

Floor panels are provided with a mechanical locking system having small local protrusions which reduce displacement along the joint when the panels are laying flat on the sub floor and locked vertically and horizontally. A method to install a floor comprising a plurality of rectangular floor panels laying in parallel rows on a sub floor with long and short edges which are connectable to each other along one pair of adjacent long edges and one pair of adjacent short edges.

A set of essentially identical floorboards each including a front face and a rear face extending in the horizontal plane, a core, and a surface layer, a mechanical locking system is arranged at least at two opposite edges for connecting a floorboard with an adjacent floorboard in a horizontal and a vertical direction, said mechanical locking system being configured for connecting the floorboard with the adjacent floorboard by vertical folding, wherein one of said opposite edges is provided with a horizontally extending protrusion at an upper edge, and wherein said protrusion is configured to overlap a surface groove at an upper edge of the other of said opposite edges, such that two connected and adjacent floorboards have upper overlapping edges.

Floor panels are shown, which are provided with a mechanical locking system on long and short edges allowing installation with vertical folding and where the long edge locking system prevents separation of the short edges during the folding action. Floor panels with mechanical locking systems with a flexible and displaceable tongue allowing easy installation.

Floor panels and floor elements therefore are made of sheet-shaped cores which are formed with sealing means for preventing or counteracting changes in the properties of the floor panels caused by moisture. A floor panel, including a body having a core, in which floor panel at least two opposite parallel joint edge portions are provided with connectors for mechanical joining of the floor panel in the horizontal direction with similar floor panels, the connectors having active locking surfaces for cooperation with corresponding active locking surfaces of adjacent floor panels after the floor panel has been joined therewith, the core having an upper surface layer, wherein a material seal of a resilient surface layer covers the upper surface layer of the core.

Floor panels are shown, which are provided with a vertical locking system on short edges including a displaceable tongue that is displaced in one direction into a tongue groove during vertical displacement of two panels. Building panels provided with a locking system for vertical locking of a first and a second building panel by a vertical displacement of the panels relative each other, a displaceable tongue is in a sidewardly open displacement groove provided at an edge of a first panel, said tongue cooperates with a tongue groove provided at an adjacent edge of a second panel for locking the edge and the adjacent edge vertically.

Floor panels are provided with a mechanical locking system including a flexible locking element in a locking groove which during a horizontal motion is displaced vertically. A panel system including a plurality of rectangular panels with long and short edges which are mechanically connectable to each other along at least one pair of adjacent edges, said panels each being provided with a tongue and groove formed in one piece with the panels for mechanically locking together said adjacent edges at right angles to the principal plane of the panels, thereby forming a vertical mechanical connection between the panels, said panels being provided with a first locking element at one first edge formed in one piece with the panel and a locking groove at an opposite second edge, the locking groove being open towards a rear side or a front side of the panel.

Floor panels which are provided with a mechanical locking system including a displaceable tongue in a displacement groove. The tongue is moulded and provided with bendable protrusions. A building panel having an edge portion provided with a groove, in which a tongue formed as a separate part is received, wherein the tongue includes at least two bow shaped protrusions at a first long edge of the tongue, and wherein the protrusions are arranged bendable in the groove.

Floorboards which have a core and a surface layer and are provided with decorative joint edges which are formed by removing the surface layer. A method for making a floorboard, or a floor element that is to be divided into at least two floorboards, the method including making a core from a sheet shaped material, from which a part of a locking system for vertical locking of the floorboards is to be formed, impregnating and/or staining the core surface with a substance at least in portions which in the completed floorboard will constitute a joint edge of the completed floorboard, and arranging an surface layer on the core surface.

Floor panels are provided with a mechanical locking system having small local protrusions which reduce displacement along the joint when the panels are laying flat on the sub floor and locked vertically and horizontally. A method to install a floor comprising a plurality of rectangular floor panels laying in parallel rows on a sub floor with long and short edges which are connectable to each other along one pair of adjacent long edges and one pair of adjacent short edges.