Yes, in the EU Halon 1211 and Halon 1301 are banned, despite being possibly the best fire extinguisher material available.
In North America it is legal to use and you can still buy halon containing extinguishers. It is illegal to discharge one other than to extinguish a fire and out of date extinguishers must be re-cycled. A far more sensible solution as it is very difficult to dispose of Halon, the stuff will not burn!
Aldermog is protected in the garage by a 1974 Firesnow Halon "area flood" unit containing 12lbs of Halon that is released if the temperature should exceed 165 C. Whilst the Halon remains in the device it cannot damage the ozone layer and if it puts out a fire I will not care.
