Venting the Soil Stack

[AdamWatson]

Hi,

The soil stack in our house was vented via a little hole drilled in a cap in one of the bedrooms

when we redid the place I ran the stack into the loft so it could be vented through the roof and put a AAV on the end as a temporary measure.

there is an existing vent pipe going through the roof, looks like the old flue from the old boiler. Currently it is not used can someone point me to a coupler to join the standard 110mm to approx 80mm steel vent?

Thanks
Adam

 

[DeltaT2]

Unless you're in a sixth floor floor flat mate, I'd just extend the 110mm through the roof. Do a proper job.