Radiators rusting from the inside!

lordeagle

About 18 months, 2 of my house radiators started to show blisters which then led to holes/leaks in the radiators. I got a plumber in to replace the two radiators and he put an additive into the system.
The problem is the new radiators are starting to rust now. What is the cause of this and how can it be fixed? It only appears to effect the radiators in the bathrooms which are the towel heater type.

Thanks

Dtp1979

lordeagle wrote: »

About 18 months, 2 of my house radiators started to show blisters which then led to holes/leaks in the radiators. I got a plumber in to replace the two radiators and he put an additive into the system.
The problem is the new radiators are starting to rust now. What is the cause of this and how can it be fixed? It only appears to effect the radiators in the bathrooms which are the towel heater type.

Thanks

Your plumber did more harm than good by adding inhibitor into a dirty system. What you need is a powerflush. That will remove the harmful water from your system and leave it like new. Then you must find out the cause of the problem. Probably a leak or it's incorrectly piped

lordeagle

Thanks

Thanks
I got the attic converted about 3 years ago and they added an extra radiator, wonder has this kicked the problem off.

Also who can tell me if there is a piping problem as I can’t.

GopErthike

Dtp1979 wrote: »

Your plumber did more harm than good by adding inhibitor into a dirty system. What you need is a powerflush. That will remove the harmful water from your system and leave it like new. Then you must find out the cause of the problem. Probably a leak or it's incorrectly piped

You don't think a power flush at this point might cause more harm than good?

System could be pitching or you have a leak somewhere. It sounds like it's taking in fresh water either way. Or if it's a sealed system with no sign of a leak, could be a dodgy nrv.

Dtp1979

GopErthike wrote: »

You don't think a power flush at this point might cause more harm than good?

System could be pitching or you have a leak somewhere. It sounds like it's taking in fresh water either way. Or if it's a sealed system with no sign of a leak, could be a dodgy nrv.

Yes but either way the corrosive water is what's causing the radiators to fail. Correcting the problem and flushing should be done at the same time obviously

greasepalm

could the towel rad material react with the rusty sludge in system,something not fitting in to go that quick.

GopErthike

greasepalm wrote: »

could the towel rad material react with the rusty sludge in system,something not fitting in to go that quick.

Rust doesn't cause rust, neither does H2o. But if you have fresh water coming into the system, this has air that hasn't yet been separated. Air plus water plus steel equals rusting.

Dtp1979

GopErthike wrote: »

Rust doesn't cause rust, neither does H2o. But if you have fresh water coming into the system, this has air that hasn't yet been separated. Air plus water plus steel equals rusting.

I think greasepalm is talking about electrolytic corrosion in a way

GopErthike

Dtp1979 wrote: »

I think greasepalm is talking about electrolytic corrosion in a way

Yes and fresh water is the electrolyte.

greasepalm

ah i have to top up system also and get more free rust .thanks guys

GopErthike

greasepalm wrote: »

ah i have to top up system also and get more free rust .thanks guys

:rolleyes: