Yes - I know this has been done to death, but its still not quite clear to me - do the pipes only have to be protected from new concrete? Or will say, 25 year old concrete floors still corrode the pipes?
I'm only asking because I had a plumber install a new heating system in my flat, and there are a few channels that have been set into concrete for the central heating pipes and gas pipes. The guy only covered the top half and some of the sides with Denzo tape (which I note gets mixed reviews anyway). I wary that when I come to fill the gaps, even if I use a dry mix, some might find its way to the underside of the pipes.
I also read somewhere in here that gas pipes aren't even supposed to be covered with Denzo tape? I'm just trying to get the facts before I go saying that the plumber hasn't done his job properly...
One other thing - copper is supposed to be corroded by concrete, but I have uncovered copper pipes set in concrete in my flat that are still working perfectly. They are not covered in anything, and must have been there for at least 25 years....
Appreciate any help with this, cheers
I'm only asking because I had a plumber install a new heating system in my flat, and there are a few channels that have been set into concrete for the central heating pipes and gas pipes. The guy only covered the top half and some of the sides with Denzo tape (which I note gets mixed reviews anyway). I wary that when I come to fill the gaps, even if I use a dry mix, some might find its way to the underside of the pipes.
I also read somewhere in here that gas pipes aren't even supposed to be covered with Denzo tape? I'm just trying to get the facts before I go saying that the plumber hasn't done his job properly...
One other thing - copper is supposed to be corroded by concrete, but I have uncovered copper pipes set in concrete in my flat that are still working perfectly. They are not covered in anything, and must have been there for at least 25 years....
Appreciate any help with this, cheers