Sliding Sash Windows

Spectus' Sliding Sash windows have been manufactured to bring all the character of a traditional timber window but provide the benefits associated with modern uPVC. This window has been approved by planning departments and fits perfectly into properties both heritage & modern. The elegant proportions and two sliding panes are effective for ventilation.

Easy to Clean

To look good-as-new, the uPVC profile requires an occasional wipe down. Both sashes of the sliding sash window tilt inwards, allowing for easy cleaning.

Classic Customisations

This window can be fitted with Georgian bars, sash horns, weather bars and a deep bottom rail, to give this window a classic look.

Accredited Quality

This window is Kitemarked to BS EN 12608 & certified to PAS 24. It's been manufactured to BS EN ISO 9001, making it quality you can trust.

Equal Sightlines

The large and small sash profiles have been manufactured to give equal sightlines to the top & bottom sashes.

Thermally Efficient

With a 28mm sealed unit, this window can achieve a WER rating of A, which can be improved with triple glazing.

Smooth Operation

Balance mechanisms within the window ensure for smooth operation. This makes it easy to open and ideal for all properties.

Colour Options

Glass Options

white cream agate signal basalt brilliant-blue steel-blue chartwell dark-green red natural-oak light-oak english-oak mahogany rosewood
arctic autumn chantilly charcoal-sticks cortona cotswold digital everglade felmish florielle mayflower minister pelerine stipolyte stipolyte taffeta sycamore warwick

Sliding Sash Window FAQ's

Here are some answers to the frequently asked questions we receive regarding our Sliding Sash Windows.

1 - Will Draughts Affect My Property?

No, the Spectus Sliding Sash window is fitted with pile seals to the sash and outer-frame. This alongside the modern uPVC profile eliminates old problems such as draughts and water ingress.

2 - Does it Come in Different Colours?

Yes, the Sliding Sash window comes in a variety of different colours and woodgrain foils, fitting in perfectly with the existing decor & style of the property.

3 - Is this Window Secure?

Yes. The Sliding Sash Window can accommodate a variety of hardware including balances, pivot bars and locking mechanisms.

What Is a Sliding Sash Window?

If you’re a homeowner wondering what a sliding sash window is, we’ve got you sorted! Sliding Sash windows utilise a design that has been loved for centuries. These windows offer the perfect space-saving solution, and unlike other designs, the panes slide upon one another. This allows you to make full use of the space around the window. 

Sliding Sash windows are ideal for older properties that need to replace old timber windows. The homeowner can enjoy the timber look without the same high maintenance issues wood provides. Instead, you’ll enjoy all the benefits associated with modern uPVC. 


10mm/20mm/50mm Frame Packers


Flush Gaskets


Meets High-Security Standards


Trickle or Glazed in Vents


'A' WER with 22mm Units


Authentic Ovolo Shape


Optional Georgian Bars


Multiple Colour and Woodgrain Options


Pile Seals


Triple Glazing Panes Up To 44mm


Approved in Conservation Areas


Sashes Tilt Inwards

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