Abstract: A method of joining at least two objects (2,4) by gluing with a two-component adhesive system to form a composite structure is disclosed. It comprises providing a first adhesive component including liquid urea-formaldehyde in combination with a powdery urea, so as to render the first component sufficiently viscous. Furthermore, a second adhesive component including a hardener is provided. At least one of the objects (4) is preheated prior to joining said objects. The first and second adhesive components are then applied separately to said objects. Finally, heat and pressure (14) is applied for a time sufficient to cause said adhesive to cure.