Soil pipe location + vent

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The soil pipe is in an extension on the back of the house. It would previously have been outside. The extension is probably around 15/20 years old, and was present when we moved in 8 years ago.

The soil pipe has had a cupboard built around it, still in the same place but now inside the extension. I have no issues with it but am planning on selling in the future and don't want to find a problem at the time. A couple of questions.

1. The newspaper is blocking up an empty port/connection. What cap should I get to cover it properly? The paper has been there presumably from when it was first fitted. No smells etc.

2. Should it be vented externally? There are no smells etc, no issues with plumbing/draining. Hopefully it's ok as it is because venting externally will be tricky...

Thanks.


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An internal rodding eye will cap that nicely 1 1/2” more than likely.
Don’t worry about internal stack.
 
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That is an air admittance valve on top. A one way air valve, to let air in, but not let sewer smells out. It avoids the need to have a pipe running outside, up the front wall or through the roof.

Measure the diameter of the hole, to source a blanking plug.
 
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Great news, thanks both. Good to hear it doesn't need to be vented externally, and a plug should be easy to find. Thanks!
 
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