Down pipes & extension

[NannaNoodleman]

We want a room on the back of the kitchen - a kind of porch/conservatory/boot room type of thing - it's on the back of the house and tucked away where the house L-shapes. I want it to be mainly glass to let lots of light in.

Anyway it's right where the downpipe and sewage pipes are. I've seen that it's easy enough to hide the manhole cover but does anyone have experience of having pipe work in an extension/conservatory?

How does it look? Was it difficult?

It was easy, the soil pipe was replaced as it used to be cast iron, and moved a few inches to be fully inside rather than where the new wall was going to join the house.
The underground section was changed to go directly through the foundations to a new inflection chamber and on to the original . You can't really have internal manholes as if everything blocks up you wouldn't really risk opening them up. The neighbours had a blockage in the equivalent manhole that we put outside, theirs is also outside, but apparently the poo was spraying all over when they opened up because of the pressure of the backup of toilet waste! That stack only connects to the upstairs toilet.

The internal pipe is boxed in with a piece of diagonal plaster board and plenty of Rockwool insulation.

Brilliant! Thanks for the information. The downpipe is right in the corner so will be really easy to box in.