Commercial & homeowner

Secondary Glazing

Secondary glazing is an effective and economical method of improving your home’s thermal and acoustic insulation. A slimline lightweight aluminium window is added to your existing window’s interior to boost its performance. Secondary glazing is available in a variety of sizes and can be designed to fit most window types.

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  • Screw Icon Quality Products Manufactured bespoke to
    exacting standards
  • Performance profile icon High Performance Ultra thermally efficient
  • Style icon Contemporary Styling Modern sash styling for
    great aesthetics
  • Colour icon Colour Range Standard, premium & RAL
    finishes available
  • Hardware icon Hardware Range Comprehensive hardware
    selection available

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Secondary glazing in Bath, Bristol, Wiltshire and Gloucestershire

Secondary glazing is often used in listed buildings and conservation areas. It is slim and discreet and is considered a reversible alteration by conservation officers. It is the ideal solution for homes located near busy roads, airports, or in noisy city centres. At Techniglaze, we install a range of secondary glazing styles from respected manufacturer Selectaglaze. These include horizontal sliding, vertical sliding, hinged, lift-out, fixed (fire-rated), and demountable. Secondary glazing is usually installed onto single glazed timber windows. It can be designed to meet bespoke specifications to ensure a low visual impact, perfect for either residential or commercial glazing applications.

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Techniglaze secondary glazing is available in a vast arrange of colour options including over 200 RAL colours. Their durable powder coat finish is weather resistance, low maintenance, and will stay looking bright and fresh for many years. A full list of our colour options for all of our products can be found within our technical documentation. Colour tone shown may differ to actual finished product, please request a swatch if you require an accurate representation.


Techniglaze secondary glazing is available in a range of configurations to suit your style of windows. From horizontal and vertical sliding, to fixed, hinged, and lift-out casement; secondary glazing is a versatile solution to improving your window’s security and efficiency. Its semi-permanent design means that it is the perfect choice to enhance the performance of traditional windows in protected conservation areas.

One of our aluminium installation projects for commercial contract

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View our latest Commercial and Retail projects and see the high quality of our products and installations and learn more about how we work.

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Fully Accredited

We train our factory and installation teams to the highest standards and have the accreditations and certifications to ensure compliance in all our projects.

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Technical Experts

With over 33 years trading, and a deep knowledge of the industry from fabrication to installation we are the perfectly situated to offer expert advice on your projects.