Recently had our lead pipe replaced on our Victorian terrace. The plumbers went in through our front garden, previous lead pipe went under the entry way. It's been a few weeks and with the heavy rain I've noticed the wall and cavity around the pipe is very wet. They didn't seal the pipe at either end, or add a conduit for it which I understand is standard now. Anything I can put in the inside cavity to at least stop the damp? I really don't want to contact them again as this job has been a pain in the arse.