Vertically unchallenged


We are proud to launch our new range of vertical sliders which, according to Spectus, are “something really special”.

Unlike the original timber sashes, which are troublesome and require regular maintenance, the Spectus Vertical Slider has been designed to overcome the challenges of the authentic period window without compromising the authentic look and feel of it.

Boasting “the authentic appearance of a timber sash” but with “none of the drawbacks”, “the Spectus Vertical Slider is widely regarded as the best PVC-U sliding sash window there is.”


Compatible with off the shelf hardware, customisable to meet the highest security standards and coming in a wide choice of colours and woodgrain finishes, its features are second to none. With optional Georgian bars, sash horns, weather bars and a deep bottom rail designed specifically to achieve the period look, flush gaskets which mimic traditional glazing and a timber sash outer frame dimension of 128mm - making installation simple - the authenticity and appearance of the original vertical slider has been retained while the features significantly improved.

It has been designed to achieve a Window Energy Rating of Band ‘A’ with 24mm sealed units, comes with pile seals to the sash and outer frame to prevent draughts and has even been approved by many planning boards – including use in conservation areas.

Both sliding sashes can tilt inwards for easy cleaning and move seamlessly thanks to smooth operating balance mechanisms which are fully integrated.  The windows are also energy efficient, environmentally friendly, durable, secure, weather-proof, low-maintenance and believed to increase a property by 2%!

Vertical sliders have traditionally been all style and no substance but we are proud to provide a modern alternative which manages both. Low maintenance, exceptional thermal insulation, optimum security and visually stunning, try these out for a top-build quality and ease of fitting that both you and your customers will love.