We often use extreme heat to loosen fixtures on a cast iron radiator that have been in place for a hundred years or more. What effect does this have on a cast iron radiator?

We are often asked if it’s possible to renovate a cast iron radiator at home using a bargain carcass radiator found online. We’d always recommend leaving it to the experts, but if that’s not an option, we’ve got a few hints and tips on what to look for.