Our sustainably sourced timber options offer a versatile range of composite triple glazed windows, the ultimate choice for many homeowners. Choose from real Spruce, Oak, Larch or Walnut timber finishes. Whether you require windows, French doors, or large lift & slide doors, quality and performance is always our priority to ensure Internorm customers can enjoy their products for 30+ years with little maintenance. Combine large lift & slide doors with fixed glazing and glass-to-glass corner to create even larger expanses of glass, maximizing views over the surrounding areas.