NEW Fully Mechanically Jointed Vertical Slider

Blending authentic sash window styling with superb performance

Sash windows are a design classic, but traditional timber frames don’t offer the long-term performance and easy care of modern materials. With every detail of our PVC-U Vertical Sliders accurately recreating the appearance of historic sashes, comfort, security and elegance has never been more practical or affordable.

The Spectus Vertical Slider is available with full mechanical jointing to the sash and outer frame and offers:

The Spectus Vertical Sliding Sash window has impeccable proportions. Every component of the system is the right size – a perfect recreation of the original dimensions. This includes the overall front to back depth of 128mm, which makes installation easier, and the style of the deep bottom rail. We offer different sizes of Georgian bar – to suit windows of differing scales – large and small sash profile options and a choice of perfectly sized cills. And for bigger properties, this sliding sash window isn’t scared to go large – there’s a maximum size of 3000mm by 1600mm.

In the past, few authorities would permit the use of PVC-U to replace a timber sash window. Thankfully, that’s changing. Planners have realised that our window’s amazing A+ rated thermal performance and low-maintenance qualities are great for the environment. The Spectus VS is well-known for its authentic appearance, and its use is often approved without further question. Even the most resistant of conservation officers are usually convinced when they see a sample. Now, with the option of a mechanically jointed sash which replicates the appearance of timber window joints, there can be few remaining objections.