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Secondary Glazing


Lift Out & Horizontal Sliders are by far the most commonly used secondary glazing;


Lift Outs


Economically, the Lift Out is the most cost effective type of secondary glazing available. Its most common application is where limited access to the primary window is required, for example a window which has been installed with the sole object of providing light to a room.
As well as economical, the Lift Out is also the most basic form of secondary glazing. As its name implies, it simply lifts out of a secured channel. For practical purposes, it is advised that the sash size be considered since the weight of glass must be of manageable proportions. Each sash is manufactured with double brush pile seal, further increasing the thermal and sound insulation properties.


Horizontal Sliders


The Horizontal Slider is undoubtedly the most frequently used type of secondary glazing. Its uses are therefore widespread, being applied to high rise or low-level commercial properties, historic buildings as well as all kinds of domestic dwellings. The Granada system provides sensitive solutions to the problems created by noise and sound pollution.
Generally available in two, three or four panelled versions, the sashes are fitted with brass rollers, ensuring the smoothest sliding action. Twin brush seals provide excellent high sealing efficiency. This has been scientifically proven to eliminate draughts, increase thermal insulation and give greater improvements to the security of the primary windows. The security issue is further enhanced with the use of the latest locks and handles.


Vertical Sliders


Due to the characteristics of the existing primary window, the Balanced Vertical Slider is the most complex type of secondary glazing system. It is applied generally to older properties. It is particularly suited to the refurbishment and upgrade of the nation’s architectural heritage.

The individually pre-tensioned spiral spring balances control the motion of the sash, enabling infinite vertical positioning. This design provides ease of movement and has been specially developed to withstand decades of wear and tear. Tilt in versions can be pivoted through almost 180 degrees. This is especially useful for cleaning but just as importantly can be crucial when considering fire escape requirements. All variations of Granada’s exclusive secondary glazing styles are completely compatible. Each type can be easily used with another no matter what the application may be.


Hinged Units


When it comes to providing an unobtrusive secondary glazing system, the hinged unit provides the most appropriate solution, since there are no transoms or mullions to spoil the view. The reduction in noise, and improvement in thermal insulation, greatly enhances both the living and working environments.


Tilt Back Vertical Slider

Tilt Back vertical slider was designed so that both sashes can tilt into the room for ease of cleaning. Our Tilt Back vertical sliders have balances to support the weight of the sash and hold it in any open position.



Flyscreens are ideal for keeping insects out of your property during the warmer months, while the fully translucent mesh allows for ventilation and almost perfect visibility - in fact you'll hardly notice them. They are easily fitted and just as easily removed for cleaning and for storage during the colder months when they are not needed. Flyscreens are hardwearing and made-to-measure using the best quality materials.available.


Flyscreens are specifically designed to be slim and compliment the aesthetic line of existing windows and doors. Flyscreens are perfect for use in kitchens within schools, pubs, cafes, restaurants and other establishments where food is prepared. They are also great for warm conservatories where windows need to be open a lot during the summer. Now you can keep the windows open when its warm without the worry of flies in the room.


To view our secondary window suppliers Duration Windows, please click here.

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