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Aluminium Secondary Glazing

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Buy our slim Secondary Glazing online. It is discreet and will conserve the character of your period property.
It has been designed as a cost effective solution to reduce noise and heat loss.
We have one of the broadest ranges of Secondary Glazing to buy online in the UK.
Specify our thermal glass to significantly improve the thermal insulation and cut out the draughts.
Specify laminated glass or acoustic glass for much improved sound insulation.
It is easy to install and buy online and is considered a reversible change, making it suitable for use in conservation areas.

Secondary Glazing involves adding another slim-line window in addition to your existing windows. It is a cost effective and efficient method of insulating & sound proofing your windows. By fitting our Secondary Glazing you could save around 10% on your heating bills. The Energy Saving Trust states that it is an ‘ideal solution if you are unable to replace your existing windows with double glazing’.


Secondary glazing is perfect for use in Listed Buildings and conservation areas. Made from strong light weight aluminium, it can be made to be very slim and discreet. Adding Secondary Glazing to your existing windows is considered a reversible and cost effective change. Doing so is recommended by English Heritage and the Listed Property Owners Club.

Get A Price Online Now >

Secondary Glazing - Get a Price and Buy Online Today

Horizontal Sliding Secondary Glazing

Buy Horizontal Sliding Secondary Glazing

Windows With Vertical Bars

Perfect for wide multi-pane windows that have vertical bars, such as casement windows. Panels slide to give easy access to the existing window for ventilation and can be removed for cleaning.

Vertical Sliding Secondary Glazing

Buy Vertical Sliding Secondary Glazing

Windows With Horizontal Bars

Ideal for windows with horizontal bars, such as vertical sliding sash windows. Available with balances and with a tilt back easy clean facility.

Hinged Secondary Glazing

Buy Hinged Secondary Glazing

For Regular, Full Access

Ideal for bays, providing fire escape and specialist applications. Can provide a large clear opening for greater ventilation and full access to the existing window.

Lift Out Secondary Glazing

Buy Lift Out Secondary Glazing

For Hard To Treat Areas

Suitable for windows with a large clear glass area, windows in hard to tread areas or tight spaces. Ideal for bay windows and where other secondary styles are not possible. Recommended for windows where only occasional access is required.

Fixed Secondary Glazing

Buy Fixed Secondary Glazing

Inexpensive, But No Access

Inexpensive, ultra slim-line and very simple to fit. Our Fixed secondary glazing is a system in it’s own right. Suitable for where access to the existing windows is not required.

Combination Units

Buy Combination Units Secondary Glazing

For Specialist Applications

We are able to combine and/or couple together our hinged & lift out secondary glazing units. These units are perfect for treating more complicated window styles and bay windows.


Buy Flyscreens in Secondary Glazing

Lift Out & Integrated Panels

We are able manufacture flyscreen lift out panels or integrated flyscreens within our secondary glazing units, to provide year round benefits. Perfect for keeping the insects out of the Kitchen.

- K.N.

Trade Supplier of ALUK products Smarts Systems approved fabricator. We are the largest supplier of Smart products in the UK. BFRC British Fenestration Rating Council - under the Window Energy Rating Group Scheme We are CE Marking complient