A method for the production of a photovoltaic module comprising back-contact solar cells. A lower encapsulating layer, followed by an alignment and an application of the lower encapsulating layer to the inner surface of the back-contact back-sheet. The lower encapsulating layer, comprises a lower surface facing the back-contact back-sheet and an upper surface opposite the lower surface. The method includes adhesion of one or more predetermined portions of the lower surface of the encapsulating layer to the back-contact back-sheet, having each portion a predetermined superficial area which is lower than the total area of the lower surface of the lower encapsulating layer. The adhesion of the lower encapsulating layer is followed by the application of the lower encapsulating layer to the back-contact back-sheet.