A method for joining two or more items consisting of any kind of material, by using a fluid joint filler which is applied to one or more joint faces and/or joint cavities of one or more items, where the items are fixed in relation to each other with the said joint faces and/or cavities in the desired mutual jointing position, where the fluid joint filler is then applied to the joint faces and/or cavities, as the items are designed with one or more inlet openings for introducing the fluid joint filler to the joint faces and/or joint cavities, and where the fluid joint filler is then allowed to harden or to set. hi a simple way is hereby achieved that it becomes possible to control the distribution of a fluid joint filler so that one may avoid joint filler on unwanted places and to ensure that the joint filler has the optimal joint thickness and shape with consequent optimal strength for the joint.