A roof window comprising: a frame with a plurality of frame members defining a frame plane and adapted to be connected to a load-bearing structure of a roof of a building; a sash with a plurality of sash members and carrying a pane defining a sash plane; and a set of hinges (10; 1010) connecting the sash with the frame to allow the sash plane to assume an angle relative to the frame plane, each hinge (10; 1010) of said set of hinges defining a hinge centre (c) and including a frame hinge part (100; 1100) in connection with a frame side member and a sash hinge part (200; 1200) in connection with a sash side member and configured to assume an angle relative to the frame hinge part (100; 1100), which frame hinge part (100; 1100) and sash hinge part (200; 1200) each comprise a base plate (110; 210), which are substantially plane and parallel to each other, said set of hinges (10; 1010) defining a hinge axis (α), the sash and frame each having an interior side adapted to face the interior of the building in the mounted condition and an exterior side (21e, 11 e) adapted to face the exterior of the building in the mounted condition, each base plate (110, 210; 1110, 1210) having a predefined circumference (cf, cs), the hinge centre (c) being defined as the geometrical centre of the predefined circumference (cs) of the base plate (210; 1210) of said sash hinge part (200; 1200), wherein the hinge centre (c) of each hinge (10; 1010) of said set of hinges is offset from the hinge axis (α), the hinge axis (α) is located to the interior of the exterior side of the sash and frame , and the distance between the hinge axis (α) and the hinge centre (c) lies in the range of 30 to 150 mm, preferably 45 to 120 mm, more preferably 60 to 90 mm, such that the hinge axis (α) is in the vicinity of the centre of gravity of the sash including the pane, characterized in that the set of hinges is arranged such that the hinge centre (c) of each hinge (10; 1010) is located to the exterior of the exterior side (21e, 11 e) of the sash and frame . a frame with a plurality of frame members defining a frame plane and adapted to be connected to a load-bearing structure of a roof of a building; a sash with a plurality of sash members and carrying a pane defining a sash plane; and a set of hinges (10; 1010) connecting the sash with the frame to allow the sash plane to assume an angle relative to the frame plane, each hinge (10; 1010) of said set of hinges defining a hinge centre (c) and including a frame hinge part (100; 1100) in connection with a frame side member and a sash hinge part (200; 1200) in connection with a sash side member and configured to assume an angle relative to the frame hinge part (100; 1100), which frame hinge part (100; 1100) and sash hinge part (200; 1200) each comprise a base plate (110; 210), which are substantially plane and parallel to each other, said set of hinges (10; 1010) defining a hinge axis (α), the sash and frame each having an interior side adapted to face the interior of the building in the mounted condition and an exterior side (21e, 11 e) adapted to face the exterior of the building in the mounted condition, each base plate (110, 210; 1110, 1210) having a predefined circumference (cf, cs), the hinge centre (c) being defined as the geometrical centre of the predefined circumference (cs) of the base plate (210; 1210) of said sash hinge part (200; 1200), <EOS>