For decades, uPVC casement windows have been the nation’s most trusted and popular choice, and it’s easy to see why. At R Holwell and Sons Ltd, we have been supplying and expertly installing windows for homeowners throughout Surrey and West Sussex for years. These timeless windows combine the traditional side-hung or top-hung opening style that suits virtually every British property – from charming period cottages in the Surrey Hills to 1930s and modern homes in Guildford. With today’s highest standards of thermal efficiency, security and durability. Whether you’re replacing tired old timber frames, upgrading draughty single glazing or completing a new extension, our Liniar casement windows deliver exceptional performance without compromising on kerb appeal.