sm_jamieson wrote:
Most people replace cast iron pipes with plastic. Advantages, less
chance of freezing etc.
When my extension is built, I will have a soil pipe boxed in in the
kitchen and wish it to be as quiet as possible, so am considering new
cast iron for at least the indoor section. Anyone fitted new cast iron
? What are the standard sizes, best places to purchase etc. ?
And will it in reality decrease house saleability, since due to
ignorance, many poeple think all old cast iron needs to be replaced
with plastic (like they do with wooden windows) ?

I really can't see why you'd want a cast iron soil pipe. Disadvantages:
very expensive, heavy, awkward to handle and fit, difficult to cut to
length, etc etc... is it just because you reckon it will be quieter than
plastic (can't comment on whether it would be or not)? That's a
non-issue if you're going to box it in, as it's perfectly possible to
get very good sound proofing that way regardless of the nature of the pipe.

See my experience at http://tinyurl.com/pwmpy (or
http://groups.google.co.uk/group/uk.d-i-y/browse_frm/thread/5449313548382693/a12bbce75715aa26?hl=en#a12bbce75715aa26

- unfortunately google's archive seems tohave lost the first part of the
thread, but hopefully you can get the gist of it.

By the way I'm sure it wouldn't affect the house value one iota -
punters look at windows but not soil pipes - but anyway - if the thing's
boxed in how will they know what it's made of!!??

David