A skylight window for being installed in a roof of a building, the skylight window comprising: a window frame having four frame side members, a window sash having four sash side members supporting an insulating glazing unit, abbreviated IGU, having multiple layers of glazing, said window sash being movable in relation to the window frame between an open and a closed position of the skylight window, and a weather shield attached to the sash so as to protect a window portion of the skylight window, the window portion comprising the sash, frame and IGU, a first of the frame side members being associated with a first of the sash side members, each of said first frame and sash side members extending in a respective longitudinal direction substantially in parallel with a first peripheral side of the IGU, said IGU having an exposed interior major surface for facing an interior of said building in an installed position of the skylight window, said interior major surface extending in an outward direction away from a center of the IGU, an inward direction extending in a direction opposite to said outward direction, said IGU further having an exposed exterior major surface for facing in an exterior direction, which is opposite of said interior of said building in said installed position of the skylight window and extending away from and at a right angle to said exterior major surface of the IGU, said exterior major surface extending in the outward direction, an upward direction being defined as extending away from at a right angle to said exterior major surface of the IGU, characterized in that said first sash side member includes a first leg, which extends in the exterior direction away from the exposed exterior major surface of the IGU, and a supporting section, which is adhered to said exposed exterior major surface of the IGU by means of adhesive and/or the supporting section comprising an interior surface facing towards an interior of the building in an installed position of the skylight window, said interior surface of the supporting section is glued to the exposed exterior major surface of the IGU a window frame having four frame side members, a window sash having four sash side members supporting an insulating glazing unit, abbreviated IGU, having multiple layers of glazing, said window sash being movable in relation to the window frame between an open and a closed position of the skylight window, and a weather shield attached to the sash so as to protect a window portion of the skylight window, the window portion comprising the sash, frame and IGU, a first of the frame side members being associated with a first of the sash side members, each of said first frame and sash side members extending in a respective longitudinal direction substantially in parallel with a first peripheral side of the IGU, said IGU having an exposed interior major surface for facing an interior of said building in an installed position of the skylight window, said interior major surface extending in an outward direction away from a center of the IGU, an inward direction extending in a direction opposite to said outward direction, said IGU further having an exposed exterior major surface for facing in an exterior direction, which is opposite of said interior of said building in said installed position of the skylight window and extending away from and at a right angle to said exterior major surface of the IGU, said exterior major surface extending in the outward direction, an upward direction being defined as extending away from at a right angle to said exterior major surface of the IGU, characterized in that said first sash side member includes a first leg, which extends in the exterior direction away from the exposed exterior major surface of the IGU, and a supporting section, which is adhered to said exposed exterior major surface of the IGU by means of adhesive and/or the supporting section comprising an interior surface facing towards an interior of the building in an installed position of the skylight window, said interior surface of the supporting section is glued to the exposed exterior major surface of the IGU