Boiler flue location 2022

[Mtb1]

Hi

Any thoughts. Neighbours boiker flue is causing us problems. Newish condensing boiler Worcester botch. The wall is 1.6 m away. The height about 2.1. It faces our wall. No windows . It is on the ground floor of a 2 storey house. One side of this gap between our house opens up to our gardens the other side to a high brick wall ... so gases don't vent away well. They sit there. Or swirl around. We now have their gases coming into our house through the brick wall some how? We are at a loss to as to how. Any thoughts how they may be getting in? We have some bricks emitting salts. There is a dpc half way up the wall.. we are in an upside down house and the forgave is on top. We know where the fumes coming from as we hired a gas detector and have ruled out other sources. Initially we thought the gases no2 were coming in through a vent opposite the neighbours flu so we bricked it up. But they are still coming in. Lower bricks are double skin bricks. Garage bricks single skin. We wonder if the gases are travelling under the dpc into the house. Any thoughts on how fumes might be getting in or how to solve the problem gratefully received

 

[Mtb1]

Ps env health say they can't do anything as the boiler meets building regs. But the opdm now issue guidance that walls opposite flues should be 2.5 m away. Does this guidance have any teeth? Neighbour does not want to know. I suggested a flue kit. The fumes are making us ill. Env health just say it is for us to investigate building issues and fix.