Replacing upstairs WC pan outflow: tricky exterior location

[peteday]

I have a plastic concertina WC outflow pipe which is perished & cracked (crumbles when touched: don't know how it didn't burst before we bought this house. The pipe goes thru exterior wall to junction of soil stack right at level of start of a sloping roof for downstairs extension. A little difficult to get to & not much space between wall & stack. Junction box covered in bitumen-like sheeting, wrapped like Xmas gift.
Could I work from inside? Cut pipe off, hopefully reach into wall & scrape it out, & glue new pipe to soil pipe or is that fanciful?
Pete

 

[Paulus]

Hi pete,

The flexible pan connector shouldn't be going outside directly into stack. Sounds like a poor DIY job and not an easy fix if you want it done properly.

Either get a professional in to pipe it up properly or, if you are determined to do it yourself, post some pictures so we can get a clear idea of the job.

 

[peteday]

I cant say yet if flexible connector is directly attached to soil stack. Going back soon so will film & probably remove old flexible & look for junction box flange or an attached short pipe hopefully.

 

[peteday]

I cant say yet if flexible connector is directly attached to soil stack. Going back soon so will film & probably remove old flexible & look for junction box flange or an attached short pipe hopefully.View attachment 5263View attachment 5264

" weeks later: I was able to remove perished connector & replace. There was good pipe coming into house so all is well.

 

[Paulus]

Thanks for the feedback, it's always good to know the outcome.