I have a 4" cast iron waste pipe coming into the basement of a property. It appears to be coated with a woven mesh material which has then been painted. I wondered if anybody had any idea as to what the material could be. I've also come across similar on a 1/2" copper water pipe . Any help gratefully received as looking to bond the pipe subject to further investigation.
Or, perhaps 'pitch fibre' pipe which is a 1970s economy like strawboard that really is as bad as it sounds - running sewage through the hole in the centre of a thick roll of roofing felt would not have been much less successful. ( as this person is finding....)
However, there is a lot of it about. Buried cast iron only really works in certain soil types, in others it corrodes, hence the gas main replacement schemes.
Or, perhaps 'pitch fibre' pipe which is a 1970s economy like strawboard that really is as bad as it sounds - running sewage through the hole in the centre of a thick roll of roofing felt would not have been much less successful. ( as this person is finding....)
However, there is a lot of it about. Buried cast iron only really works in certain soil types, in others it corrodes, hence the gas main replacement schemes.
