We live in a Victorian apartment for a couple of years now. It’s got cast iron parts in a mostly PVC drain that runs through the back of the property outside.
I have noticed that there is considerable rust now in the cast iron part, I am not sure what it’s called, are these cast iron connectors ?
They need mending and I am concerned that further rusting will fully damage it, if not already.
Please advise how do I repair, replace or protect it from further damage
