Plumbers all, I'm thinking of replacing a section of old terracotta sewerage line under the house. This section at its top end was laid integrated into the foundations on sandstone i.e. there is a course of brickwork and concrete slab laid on top of the terracotta line.
The terracotta line was laid with an incredibly hard mortar mix, both bottom (on the sandstone) and top (under the foundations brick course). It would be easy enough to cut it with a 9" grinder and break it out, but I don't see a way of cleaning the hard mortar off the remaining terracotta pipe to get a PlumQik-type external sleeve join on (i.e. female PlumQik to male terracotta). Is there a reverse join (i.e. male UPVC to female terracotta) that can be waterproofed to work on this uphill end? What other alternatives exist? Could the mortar be removed - noting limited access on the far side - in some other way?
Cheers
