My bedroom has 3 outside walls and never seems warm despite the radiator being on full. The walls feel cold to the touch but I noticed that the window sill , which is tiled , is absolutely freezing despite being above the radiator. The window is double glazed and does not feel unduly cold.
Any ideas what I can do to warm things up, especially with regard to the window sill? I dont think I have cavity walls butif I have they will be insulated .
Thanks
Chris