I want to reinstate the original water feed to a garden shed that the previous owner has cut off. They have chopped the 15mm copper feed pipe 3" above the concrete floor and filled it with a load of silicone sealant. I've managed to pull out a 15" silicone plug but am assuming it has snapped and left a section in the pipe. Anyone know of a clever way to remove or dissolve a plug like this as replacing the pipe requires digging up the patio?
Cheers
Cheers