extensions and private pipes

[TryC]

Hi All,

 

If you build an extension and your extension is to go over your private pipes that service just your house(which connect to main pipes), do these pipes need redirecting outside of the extension area? and connecting to the main pipes? As I assume once you build over it them it would basically mean destroying your flooring should you need to gain access to the said pipes if there is a leak in the future.

 

Can you build over your private pipes? can they still be used or do they need redirecting?

 

 

[Mr Punter]

Yes you can build over them.  You may need some access, like a sealed lid inspection chamber depending on the pipe runs.  Not an issue with carpet or vinyl as you can relay.  Tiles can be accommodated almost invisibly.  Timber floor you will need to get it fitted to allow for access.

[TryC]

3 hours ago, Mr Punter said:

Yes you can build over them.  You may need some access, like a sealed lid inspection chamber depending on the pipe runs.  Not an issue with carpet or vinyl as you can relay.  Tiles can be accommodated almost invisibly.  Timber floor you will need to get it fitted to allow for access.

thanks!

 

If the pipes are clay do the pipes contacting to it need to be clay or are plastic ones ok?

 

[Mr Punter]

You can get adapters for clay to plastic.

[TryC]

6 hours ago, Mr Punter said:

Yes you can build over them.  You may need some access, like a sealed lid inspection chamber depending on the pipe runs.  Not an issue with carpet or vinyl as you can relay.  Tiles can be accommodated almost invisibly.  Timber floor you will need to get it fitted to allow for access.

if you have a kitchen and put floorboards in there, you can still build over?

[johnhenstock83]

what usually happens is the private pipes get moved or replaced. we went from 3 separate drains (old clay) to one plastic drain, moving everything as required. there's an inspection chamber just outside the extension and a cleaning access point in the house, in the utility room, meaning you can access the main drain from two directions, if ever needed. nothing goes in the floor, no hatch or anything. it's not even allowed, as far as I know.

[Conor]

Tbh, I'd spend the little extra and dig up all the old clay pipes and lay new PVC, outside of the extension area. High chance of old clay pipe failing when building over. Easier to move the lot.

[saveasteading]

Clay pipes can be high quality with strength and good seals, say built 20 to 50 years ago. Older might be suspect.

 

If there were no drains, say dug up by accident, would you put new in the same place or round the perimeter?