A method and a device serve for the installation of a false floor above a bare floor include false-floor supports that are placed in a regular grid pattern on the bare floor, on which floor panels are arranged alongside one another in rows. Mounting positions are determined for the false-floor supports and the false-floor supports to be installed are correspondingly positioned. Furthermore, a mounting plane lying at a mounting height is at least partially determined preferably by using laser devices. The false-floor supports to be installed are then positioned relative to the mounting plane. Pedestals, which are composed of solidifying pedestal material that is binding to the bare floor and which project beyond the mounting plane, are provided at the mounting positions before, during or after the positioning of the false-floor supports. The false-floor supports are then held each in the respective pedestal until the latter has solidified.