DIY Doctor UK DIY Forums

Hi we have an old wooden single glazed conservatory. When it's cold outside we get serious amounts of condensation on the windows which is causing stains and damp problems of the walls and window boards. I don't really want to change the glass as we're going to turn it into an extension in a few years. There's a radiator in there but I'm not sure if it works or not - would it be better to keep on if I can get it working or off? Any other solutions would be great