The invention relates to a method for forming a seal or cover on an opening of a vehicle body. An extruded strand (1) made of an elastomer material is adhered to a body support surface (3) which receives the strand (1), and the support surface (3) and/or a strand (1) surface to be adhered is supplied with adhesive material (5) prior to the adhesion process. According to the invention, the supply of adhesive material (5) is controlled according to an adhesive material quantity requirement based on the strand length, said requirement changing in the longitudinal direction of the support surface (3), as a result of depressions and/or steps for example, and/or according to an arrangement of the strand surface to be adhered on the strand, said arrangement changing in the longitudinal direction of the support surface.