PVCu Conservatory - This is an excellent, highly insulate material, which benefits from little or no external maintenance. It is readily available and well tested and is usually the lowest cost option from a range of materials available. It is mainly seen in white but also available in Rosewood and Oak woodgrain styles. uPVC or PVCu is by far the most popular material for conservatories today. This material is available for all types of conservatories such as Victorian, Edwardian,Georgian and Lean To styles.