Just removed a radiator for decorating. The water was nasty black with a scummy sheen to it. Anyway, I have washed it out with running water and will refit over the weekend. Should I add something to it - one of the many treatments I see in B&Q etc. If so what would you recommend?
It's a combi boiler sealed system.
Thanks John
It's a combi boiler sealed system.
Thanks John