Patent ID: 8499521

Claim:
An installation method to vertically and horizontally connect rectangular floor panels, provided with mechanically locking systems at the long and the short edges, by vertical snap folding at the short edges and angling at the long edges wherein the method comprises the steps of: laying a first panel flat on a sub floor bringing a second panel in an angled position with its long edge in contact with a long edge of the first panel bringing a long edge of a new panel in an angled position and in contact with an upper part of a long edge of the first panel, whereby the new panel has a higher angle against the sub floor than the second panel, bringing a short edge of the new panel in contact with a short edge of the second panel, pressing and displacing the short edge of the new panel downward and horizontally along the long edge towards the short edge of the second panel, and thereby connecting the edges of the first and the second panels to each other in an essentially common plane with a vertical snap folding, angling the new and the second panel downward towards the sub floor and thereby finally connecting the first, second and third panel to each other in a common plane with vertical snap folding.