Hi, I've joined the forum after struggling with 2 Radiators that have suddenly stopped working. I have a pretty old central heating system with the tank in the loft and a separate one in an airing cupboard. A week ago the radiator in my kitchen and lounge literally stopped working overnight. I have had the heating on nearly every day due to the cold weather, i don't understand why they have stopped working. The pipes in my home are a mixture of the really small ones and the normal ones?. I have bled the radiators, no air or water is coming out of them even the pipes leading to the radiators are cold. I have tried closing all the other radiators but nothing happens. Initially I thought I may have a frozen pipe, but I'm not sure anymore. I am unable to follow the pipes because they go into the roof space above my kitchen then through the walls and into the radiators. There is no access to the kitchen roof space. I really don't want to tear my ceiling down to check the pipes. I really need some help because I am at a loss as to what to do.. every plumber I have called has told me to close the other rads or just said my pipes are frozen??.. all the pipes are under the roof space in my kitchen so why would are only these radiators affected???