Hi i live in a sheltered accommodation flat on the first floor, my two dormer windows look out onto a flat roof and there are 3 communal boilers on the ground floor in a boiler room with 5 flues leading vertically to the flat roof, the flues are 3.5 meters from my Dormer window and the height of them is level with the bottom of my dormer window, is the height of them legal should they be higher because i have been getting headaches when i have my windows open and the white
plume is blown towards my windows, i have a co2/ co detector and its not been triggered, but i still am trying to find out if the height is legal, i enclose a picture of the flues if there is anyone who could advise me before i take it up with my housing scheme