Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Cast iron radiator repair (if any)

T. J._2
T. J._2 Member Posts: 2
I have an old (>75 years) 15 row cast iron steam radiator with a hairline crack in the upper end-portion that is allowing a bypass of the thermostatic control valve I had installed last year (making temperature control impossible).

As I know cast iron radiators are hard to come by and expensive, is there any reliable way to patch the small 2" hairline crack (i.e., via JB Weld, etc.)?


  • Norm Harvey
    Norm Harvey Member Posts: 684

    It is possible to weld cast iron. A good welder will be able to do it.

    "We see the world as WE are, not as IT is, because it is the "I" behind the EYE that does the seeing"
  • Dave Stroman
    Dave Stroman Member Posts: 763

    Since it is a steam radiator, you have a good chance to repair it. You can try to use JB Weld. If you can, use an angle grinder to clean that area and even upon up the crack if you can.

    Dave Stroman, Denver
    Dave Stroman
  • BC_2
    BC_2 Member Posts: 14
    cast iron steam radiators

    We have 4 cast iron steam radiators that we are replacing. They are 38" high and 2 are 14 section ,one is 9 section and the fourth is 7 section. Anybody interested????
    315-639-3318 Dexter, NY
This discussion has been closed.