Kitchen extractor ducting to boiler to boiler flue.

[TenementConservation]

Morning,

Im in a top floor tenement flat with access to the attic space. I have a combi boiler with flue that emits vertically up through the roof. My kitchen is situated internally with no easy access to an external wall. Could I fit a kitchen extractor that ducts vertically then right angles and connects to the existing boiler flue with a t piece connector? Is there a way to make sure that any CO would not be able to come back down through the kitchen ducting, and would any of this conform to regs?


Thanks

 

[king of pipes]

No no no no no ! There absolutely no way you can do that conform to reg it just about breaks every one 😂 , get a professional in and avoid hurting yourself or someone else. Kop

 

[SimonG]

As King of Pipes said, no, nope, never.

Fan through ceiling and then get a roofer to put a roof vent in away from the boiler flue.

 

[oz-plumber]

Do a slightly dodgy job and let the extractor vent into the roof space.
Seen plenty of this setup over the years