Window with a reduced risk of condensation

A window for mounting in an inclined roof surface of a structure with an interior side facing indoors and an exterior side facing outdoors, comprising:

• a frame structure and a sash structure with an insulation pane (6), the sash structure being openable relative to the frame structure, and each of said frame structure and said sash structure having a bottom member and side members, the bottom member and each of the side members intersecting at a corner;
• the frame and the sash structures comprising
• profile members, which, at least with respect to said bottom members and said side members (1-4, 21-24) of the frame and sash structures, are solid profiles of a thermally well insulating material;
• heating means in at least corner areas around each of the corners (8, 31) between the sash bottom member and the adjacent side members (4, 24) for preventing condensation on adjacent corner areas of the insulation pane,
• wherein the heating means is a passive heat bridge of a good heat-conducting material integrated in a cover member (10, 27) arranged on the interior side of the window on each of the bottom and side members (3, 4;
• 23, 24) of the sash structure facing the insulating pane and bordering said corner areas for providing a good heat-transmission from the interior side of the sash structure to said corner areas (8) of the insulating pane (6).