durgo or aav

26 Feb 2007
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United Kingdom
I am putting a new soil pipe externally and want to know does it need to go above the height of the roof with an open vent or can you put a durgo on and not have the pipe going all of the way above the roof height.

A friend of mine told me that he thought durgos were only fitted internally, but this pipe will be fitted externally.
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preferabaly I want to stay under the roof height as the pipe is at the front of the house so by putting an external AAv on I would be ok as far as building regs go??

Thanks for any advice
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Why would you need an external AAV :?: If you put a bird cage on top it will still let air in. :confused:

If its because you are within 3 metres of a window then BCO will not allow anyway. :(

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