Vertical Sliding Sash

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Spectus uPVC Sliding Sash Windows

Our beautiful Spectus vertical sliding sash windows combines perfect proportions, period details and traditional techniques. Both frames and sashes can be mechanically jointed, or mitred. Sash horns are part of the sash, not an afterthought. Georgian bars are milled for a superb fit. Deep bottom rails and a choice of sashes give impeccable sightlines.

Traditional box-sash dimensions, hardware and glorious period colours – it’s
enough to melt the heart of the toughest planning officer.

If you would like to know more about our sliding sash windows, then please don’t hesitate to get in touch.

Customise Your Windows

uPVC Colours

Obscure Glazing Options

Colour Options

uPVC Colours

Glazing Options

Obscure Glazing Options



Why Choose Us

Customer Service

Our customer service team pride itself on giving you a great experience with our company. We want to make sure we’re your first choice.


Your satisfaction with the work is the most important thing to us. We never ask for the full balance of a job until you are completely satisfied.

Product Range

Our extensive range covers many styles and colours, so you're guaranteed to find that perfect window or door for your home.

Our Factory

Our brand new state of the art factory uses the latest window and door manufacturing equipment, allowing us to make our products very quickly.

What Our Customers Say

Sergio Petrosillo

Recently purchased windows. Outstanding quality and nicely made, would recommend any time.

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