The method for volume- and/or area-specific firefighting with extinguishing agents in fire-endangered areas of buildings and installations, in which the extinguishing agent is supplied from a pipeline system that is arranged horizontally in the building and that has branches and shut-off valves of an extinguishing agent valve station, and, in the event of fire, fine mist or spray of the extinguishing agent under pressure is released in a specific quantity and duration by spray nozzles, wherein the shut-off valves are opened by detection aids for releasing the extinguishing agent after detecting a source of fire, a trigger signal is generated and, at the same time, an alarm is triggered by a logic array, at least one fire alarm is notified to an auxiliary location, the extinguishing agent is released and electrical and oxidising systems are switched off, wherein at least one extinguishing agent wall of spray mist is generated around the source of the fire and/or in the fire-endangered area to prevent the penetration of a thermal load in other areas along at least one of the areas leading to the source of the fire or to the fire, vertical and/or horizontal spraying plane (E1...En) belonging to the fire-endangered area, integrated into the building, load-bearing and non-load-bearing extinguishing agent-carrying supports, monitored by the detection aids, is characterised in that at least one more extinguishing agent wall is produced from spray mist for the protection and cooling of escape routes, roads or paths, openings in fire protection walls and technical equipment within the building along the spraying planes (E1...En) between the respective vertical extinguishing agent-carrying supports, wherein the following steps are carried out: a) Division of the extinguishing-agent carrying supports of the building into the fire-endangered areas, escape routes, roads or ways, openings in fire protection walls and technical equipment, b) Combination of the fire-endangered areas and extinguishing-agent carrying supports to form large-volume monitoring sections (A, B, C, D) with extinguishing agent ejection devices assigned to each of these sections, c) Formation of planes (E1...En) for extinguishing agent walls between the vertical supports belonging to the source of fire or fire-endangered area by controlling the extinguishing agent ejection devices belonging to the respective monitoring sections (A, B, C, D) using a control unit (7.1...7n), d) Detecting and locating the fire within the monitoring section (A, B, C, D) using detection aids which transmit a change in temperature, smoke and/or pressure to the triggering control units (7.1...7n) and the logic array, e) Determining the vertical supports, wherein the vertical and/or horizontal extinguishing agent wall needs to be generated; whereby, the corresponding control units (7.1...7.n) are locked, f) Conversion of the temperature, smoke and/or pressure change according to step d) into a control variable and activation of control units (7.1...7.n) assigned to the vertical supports to open and/or close the extinguishing agent ejection devices for generating the extinguishing agent wall. a) Division of the extinguishing-agent carrying supports of the building into the fire-endangered areas, escape routes, roads or ways, openings in fire protection walls and technical equipment, b) Combination of the fire-endangered areas and extinguishing-agent carrying supports to form large-volume monitoring sections (A, B, C, D) with extinguishing agent ejection devices assigned to each of these sections, c) Formation of planes (E1...En) for extinguishing agent walls between the vertical supports belonging to the source of fire or fire-endangered area by controlling the extinguishing agent ejection devices belonging to the respective monitoring sections (A, B, C, D) using a control unit (7.1...7n), d) Detecting and locating the fire within the monitoring section (A, B, C, D) using detection aids which transmit a change in temperature, smoke and/or pressure to the triggering control units (7.1...7n) and the logic array, e) Determining the vertical supports, wherein the vertical and/or horizontal extinguishing agent wall needs to be generated; whereby, the corresponding control units (7.1...7.n) are locked, f) Conversion of the temperature, smoke and/or pressure change according to step d) into a control variable and activation of control units (7.1...7.n) assigned to the vertical supports to open and/or close the extinguishing agent ejection devices for generating the extinguishing agent wall.