Our Legacy uPVC sash windows are designed to be the perfect timber replica. Their composition makes them a perfect solution for conservation areas and other heritage buildings. They slide vertically and can also tilt within the frame, providing an easy maintenance solution for homeowners in your coverage area.

Additional design features, such as run through sash horns and a deep bottom rail, are available to add an authentic touch of class to the uPVC sash windows. Plus, we are pleased to offer 90 degree mechanical joints for a sash window replacement that doesn’t compromise on the original aesthetic. With our optional authenticity features, these windows can look as close to timber as possible while granting much higher energy efficiency, security, and lower maintenance requirements.

One of the highlights you'll see is our newly designed 37mm slim midrail. 10mm slimmer than its standard counterpart, it looks much more authentic, effortlessly matching the midrail on traditional timber sash windows. It’s a design that perfectly balances traditional charm with contemporary style, making it an ideal choice for both classic and modern homes.

In addition to its stunning looks, our sliding sash window also boasts impressive thermal performance. With a U-value as low as 1.2 W/m²K, we’re surpassing the standards in energy efficiency for sash windows. This means you can enjoy the beauty of a classic design while benefiting from the latest in insulation technology, keeping your home warmer in winter and cooler in summer.