ROOF WINDOW COMPRISING POLYMER PROFILES WITH METAL REINFORCEMENT

A roof window (1), is disclosed. The roof window comprises a frame (2) comprising structural, elongated frame profiles (2a, 2b, 2c) comprising side profiles (2a), atop profile (2b) and a bottom profile (2c), and an insulating glass unit (3) supported by the frame (2). One or more of the structural elongated frame profiles (2a, 2b, 2c) is a polymer frame profile (2a, 2b, 2c) comprising
- polymer profile walls (4AB-4EA), which together shape and enclose one or more longitudinally extending interior profile spaces (5), and
- metal reinforcement, which reinforces the polymer frame profile (2a, 2b, 2c).
The metal reinforcement comprises a plurality of discrete metal bars (6), which extend in the longitudinal direction of the polymer frame profile and which are secured to one or more of the polymer profile walls (4AB-4EA). The total weight of metal reinforcement (6) per meter of the polymer frame profile (2a, 2b, 2c) may be less than 0.7 kg, such as less than 0.5 kg, such as less than 0.3 kg. per meter frame profile (2a, 2b, 2c).