Abstract: A method for mounting floors in a shell whose concrete wall is erected by a continuous self-climbing shuttering installation and a continuous self-climbing shuttering installation for implementing the method, includes appropriate vertical and horizontal movements of certain assemblies (I.sub.1 -I.sub.2), (I.sub.3 -I.sub.4) of self-climbing brackets (2) and of their shuttering and concreting walkways (P.sub.1, P.sub.2, P.sub.3) so as to provisionally align the brackets (2, 2b) vertically in twos, and thus reduce the number of peripheral clearances to be provided in the floors to be laid at intervals inside the wall of the shell to be erected. The installation includes lateral transfer carriages (14, 14') providing the horizontal lateral transfers of the brackets, the vertical transfers being provided by the normal self-climbing system.