Floor panel with sealing means

A method for forming a joint between two adjoining edges of floor panels, the floor panels having a core, a surface layer applied to an upper side of the core, the surface layer including at least one layer, and a locking system at adjoining joint edge portions for joining the floor panels with each other in at least a vertical direction and whose upper adjoining joint edges meet in a vertical joint plane, the method comprising:

• forming a groove within a band-shaped area of the core of a blank of a floor panel;
• securing an elastic sealing material in the groove of the blank of a floor panels;
• and then
• forming a joint seal simultaneously with forming the joint edge of the floor panel, the joint seal formed in at least at one of the adjoining joint edge portions of the floor panels and adapted to be compressed when adjoining floor panels are joined together, wherein the joint seal is adapted to counteract penetration of moisture along the vertical joint plane between adjoining floor panels.