Everywhere is getting infected by government regulators who do nothing but create needless regulations…….I have a very old house which was designed to be heated by open fires burning wood and coal.
There are huge chimney breasts that go up to the Chimneys, they got warm from the fires and heated the upstairs….You can easily install a multi fuel stove….a lot do…..they too heated the Chimney breasts…so the bureaucrats created a regulator for the stoves….who decided that for ‘safety’ reasons a metal tube must be installed up the Chimney……result the breasts never get warm, the top of the tube is very hot, so hot they are now actually a dangerous fire hazard in a thatched roof and must be cleaned twice a year and have driven up insurance costs, so much that most thatched houses have abandoned them.
If you burn wood and coal it creates an impermeable lining inside the chimney, that no gas will get through and as long as it is swept, will not burn……so no need for the metal tube.