Secondary Glazing
Improve your energy efficiency and reduce noise and drafts for good
Whatever the sized window or door we can help you to get the right secondary glazing for your business or home. Alternatively visit one of our Essex or Suffolk showrooms and see the quality for yourself. All without cost or obligation
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Secondary Glazing has stood the test of time and still remains one of the best methods of insulation and noise protection for both homes and commercial buildings. This performance is achieved with the addition of a slim second window to an existing window.
With ever increasing energy bills, our secondary glazing is an effective and discreet method of insulating windows and which can not only help to improve thermal performance but also greatly reduce noise where needed. It is also a popular solution in areas that have planning restrictions on the installation of typical double-glazed windows, such as listed buildings.
Our secondary glazing system is fabricated by ourselves in Hadleigh and is available in a range of colours and styles to suit your requirements. With slim profiles to match the sightlines of existing windows and acoustic glass upgrades available, it can provide a solution for any project.
Contact us today for a quotation or arrange a visit for a demonstration at one of our Suffolk or Essex based showrooms.
Glazing for Period Homes
If you live in a character home, period property or simply love the look of your windows as they are, secondary glazing offers a smart way to boost comfort without changing the charm. It’s especially handy when replacing the original glazing, such as in a period or listed property, isn’t an option.
Our slim aluminium frames are designed to be discreet and blend effortlessly with your existing glazing. From the outside, they’re barely noticeable, preserving your home’s appearance while improving warmth, sound reduction and peace indoors. It’s a simple upgrade that fits beautifully into traditional homes.
Secondary Glazing Colours and Styles
Frames are made from aluminium for a slim, stylish unit that sit with your external window perfectly. We offer fixed sash styles, hinged, lift outs, horizontal sliders, friction & counterbalanced vertical sliders, plus easy clean tilt-in counterbalanced verticals that will fit and work with any window. Our secondary glazing units are all fully glazed, remain clear and do not obstruct or blur your view. With a range of options, styles and colours to choose from, choose the best secondary glazing with Hadleigh Glass.
Energy Efficient Windows
U values measure how much heat escapes through parts of your home, the lower the number, the better the insulation. A single-glazed window typically has a U-value of 5.6, but with secondary glazing from Hadleigh Glass, this can be reduced to around 1.8–1.9.
We also offer Low-E glass, which reflects heat back into the room, keeping things warmer for longer. It’s a simple way to cut energy bills and make your home more comfortable, all year round.
Sound Reduction shouldn’t be Secondary
Sound travels in waves, like ripples in water, and without a barrier, it passes easily into your home. This is where secondary glazing really pays back.
In tests at the Building Research Establishment, a standard single-glazed window reduced noise by 26 dB. Add our secondary glazing with a 100mm air gap and performance jumps significantly:
- 4mm Glass: up to 39dB reduction
- 6mm Glass: up to 39dB
- Laminated Glass: up to 40dB
- Acoustic Glass: up to 45dB
Putting that into perspective, a 10dB drop halves the perceived volume. So, whether you’re near a busy road or under a flight path, secondary glazing can bring peace and quiet back to your home.
Eliminating Draughts with Secondary Glazing
Draughts can cause chilly spots and corners around your home, especially at floor level, often leading to the heating being cranked up just to stay warm. Hadleigh Glass secondary glazing is engineered with tight tolerances to stop cold air and dust getting in, while keeping warm air exactly where it should be – in your house.
Our systems have been tested to Pressure Class 300Pa for air permeability by BSI, meeting rigorous British Standards (BS 5368: Part 1 and BS 6375: Part 1). Whether you’re heating or cooling a space, secondary glazing improves efficiency by preventing air leakage and reducing energy waste. Secondary glazing can be used in a variety of environments, its ideal for homes, offices, and air-conditioned spaces.
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