durgo

[merseyscouse]

I have an internal soil stack which used to vent through the roof, after some roof repairs i cut it below the roof and fitted an air admittance valve ( durgo)
Could someone advice how low i can take the soil pipe with the aav fitted.

 

[chrishutt]

You probably shouldn't have done what you did. Your Building Control Officer should be consulted about alterations to soil stack.

 

[kevplumb]

 

[Bahco]

You now have a build up of methane gas which has nowhere to go as the AAV does not allow gases out..

Do as Chris says and seek advice from BCO.

 

[merseyscouse]

The guy in the plumbers merchants said this was ok to do, has been in for over 3 years now, i live in the middle house of 5 terraced propertys all sharing the same sewer, surely any methane will go up and out of neighbouring propertys soill stacks which still vent to outside???
I only want to go lower because i am wanting to have a central heating boiler fitted and the line of the flue would clash with the soil stack.....what do you define as the flood level???

 

[bathjobby]

And what happens if all you neighbours do the same thing ! Regs state there has to be a primary soil stack vented out side.

 

[merseyscouse]

why sells these items then?????

 

[kevplumb]

cos if you have a long branch it must be vented to stop the seal pulling out of the traps

 

[merseyscouse]

thanks kev but what is your definition of the flood level

 

[Bahco]

You won't listen to the advice given will you?

 

[merseyscouse]

of course i listen to advice, i was given advice 3 years ago and have had no problem since....the assumption on here seems to be that if everybody on my block fits a durgo then i might have a problem....thats not likely to happen to 4 other properties and it will be easy to see if anyone else starts work anyway.

 

[kevplumb]

thanks kev but what is your definition of the flood level

600 above the highest point the water gets to
usually the rim of the basin

 

[bathjobby]

of course i listen to advice, i was given advice 3 years ago and have had no problem since....the assumption on here seems to be that if everybody on my block fits a durgo then i might have a problem....thats not likely to happen to 4 other properties and it will be easy to see if anyone else starts work anyway.

Maybe, but the regs still say your primary stack should be open vented, so you may have a problem when coming to sell, or, its hardly a decent argument trying to stop your neighbours doing the same 'because you have already done it'. Why do something contrary to the regs and build in an unnecessary dependency on your nieghbours over which you have no control !

 

[merseyscouse]

Maybe, but the regs still say your primary stack should be open vented, so you may have a problem when coming to sell, or, its hardly a decent argument trying to stop your neighbours doing the same 'because you have already done it'. Why do something contrary to the regs and build in an unnecessary dependency on your nieghbours over which you have no control !

point taken, can i just ring up and ask or am i going to have to submit drawings, plans????

 

[pixey]

of course i listen to advice, i was given advice 3 years ago and have had no problem since....the assumption on here seems to be that if everybody on my block fits a durgo then i might have a problem....thats not likely to happen to 4 other properties and it will be easy to see if anyone else starts work anyway.

Maybe, but the regs still say your primary stack should be open vented, so you may have a problem when coming to sell, or, its hardly a decent argument trying to stop your neighbours doing the same 'because you have already done it'. Why do something contrary to the regs and build in an unnecessary dependency on your nieghbours over which you have no control !

My Dad has recently moved into a house built approx 5 years ago, with 2 toilets and a durgo in the loft - no external open vented stack at all!

Paul