The present invention relates to method for manufacturing a building element. The method comprising the steps of peeling a log in a lathe to form a veneer; forming the veneer to a veneer sheet (1) of a suitable size; impregnation of the veneer sheet, wherein impregnation chemicals is applied on both sides (2, 3) of the veneer sheet;drying the veneer sheet (1); applying glue (10) on at least one side of the veneer sheet (1); pressing a predetermined number of glued veneer sheets together to form a billet (4) in a pressing stage; trimming the edges of the billet (4), such that the billet is square formed; hot pressing the billet (4) for 10-90 minutes; applying glue (11) on at least one side of the billet; cold pressing a predetermined number of glued billets together to form a building element, and trimming the edges of the building element, such that the building element is square formed.