I am getting a new radiator installed to replace an old ones. The pipes came from room next door and existing pipes were unsightly, partly because they came through bottom of joist/floor/bottom of skirting.
I asked installer to install new pipes directly through wall to then be used with corner valves to give neat finish with pipes not really visible.
But installer said not safe to install through solid wall. Is he correct and if so can it be done safely, by casing the pipe as it goes through within something else?