Can I Add AAV To Soil Stack,Instead Of Venting Through Roof?

[holdyerplums]

The pictures below show the view of the gable end wall from inside my loft. Its a bungalow.

At present, the soil stack vent enters the loft through the loft floor, crosses the loft in front of a breeze block wall where I want to mount a new boiler, and exits through the roof to the outside.

The pipe is blocking the wall where I want to mount a new boiler. Can I cut the vent pipe just above where it comes through the loft floor and add an air admittance valve intead (as in 2nd picture)?

Untitled

• holdyerplums
• 3 Jan 2010
• 1

 

[kevplumb]

not if its the only vent

why not take it straight up

 

[holdyerplums]

I suppose I could do. Thought it would be less hassle than messing about with lead slates. Never fitted one before. Are they reasonably easy (I have done lots of other DIY)?

Would I be able to re-use the original lead slate, or buy new one?

 

[kevplumb]

either

you might find the old one hard to work though

push the boat out fella

cost will be about the same

 

[wetshoes]

I seem to remember "1 open vent per 6 houses minimum" so it might be worth a call to building control to check.

 

[Nige F]

Your Plumber/ Registered Gas Engineer Should be able to do both jobs for you . and comply with all regs.