Secondary Glazing

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Why use Secondary Glazing?

Caddy Windows secondary glazing consists of an aluminium outer frame with an additional pane of glass. This is installed on the inside of the existing single or double glazed window.

This type of window system is predominantly used in properties where building and planning restrictions are enforced. This is because in most cases the original windows cannot be re-placed easily, so the used of secondary glazing provides the desired effects of reducing heat loss and noise without compromising the aesthetics of existing windows and frames. 

Our secondary glazing is suitable for all types of premises including grade one and two listed buildings, schools, colleges, hospitals, offices and homes. 

Advantages of Secondary Glazing

• Inexpensive alternative to double glazing.
• Choice of fixed hinged, lift out, vertical or horizontal sliding units.
• Easy clean and installation.
• Improves thermal insulation. Effective secondary glazing can improve the thermal performance of a window by more than 60%.
• Eliminates drafts.
• Provides better sound proofing compared to single glazing alone.

Caddy Windows install our secondary glazing in Bristol, Bath and South West of England. There are various options to choose from to suit the style of windows including hinged, lift out, vertical and horizontal sliding unit:-

Horizontal Secondary Glazing 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 Sliding Secondary Glazing 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
Hinged Secondary Glazing The hinged unit can be manufactured in two main types. The single hinged unit opens on a restricting friction stay. Where the application is on a larger scale, the friction stay is replaced with a butt hinge. We have developed and rigorously tested a variety of butt hinges for differing leaf weights. The double hinged unit has been primarily designed to fit in front of larger Windows or French Doors, utilising the same range of hinges.	Lift Out Secondary Glazing 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.

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