Aluminium Secondary Glazing 

Here at DW Windows, we can fit a variety of secondary glazing options to compliment your existing windows as it is available as fixed, horizontal sliding, vertical sliding, hinged and lift out.

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

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
Suitable for windows with a large clear glass area, windows in hard to treat 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.

Ultra slim-line our Fixed secondary glazing is a system in its own right. Suitable for where access to the existing windows is not required.

We can 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.

All options are a perfect solution for those cold winter nights!

Simple and stylish – classic aesthetics
Suitable for all homes
Highly secure and energy efficient
Available in many colours
Easy to clean – say goodbye to hassle!

Fitted by DW Windows’ teams of experts

Our expert window installers will perfectly fit your new secondary glazing – making for no draughts, cold spots, or leakages. The end result will be a comfortable living space inside and stylish aesthetics outside – an effective combination.

Our expert installers have fitted hundreds of windows across Wolverhampton. They will always aim to create as little disruption as possible – that means keeping noise and mess to an absolute minimum.

  • Energy Efficient
  • Customisable
  • Brochures

Energy Efficient

Energy Efficient

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’.

This also means you can keep the authentic look of your windows, but also improve your homes thermal efficiency, security, and even sound insulation.



Our secondary Glazing is available in any standard single RAL colour paint finish of HIPCA white, Van Dyke Brown Gloss or Silver Anodised or you can choose from hundreds of RAL colour options too as an upgrade.

You can also choose your glass. Available with 4mm or 6mm standard or toughened, 6.4m laminated or 6.8mm acoustic glass there are many options to suit your needs. They  are available with clear glass as standard however also available with obscure options for added privacy.


Optima Collection Brochure

Optima S Traditional Style Windows Doors Brochure

Maintenance Handbook

A5 P22 MainHand booklet WEB 1

Secondary Glazing Duration

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    Wherever you live in the West Midlands, our range of windows, doors and home improvements will help to transform your property, whether traditional or contemporary.

    For over a decade we have been serving locations including Wolverhampton, Walsall, Stourbridge, Birmingham, Dudley, Telford, Kidderminster, West Bromwich, Bridgnorth and further afield. Whether you want to add a touch of style to your home, or enhance its security and energy efficiency, DW Windows are glazing specialists that you can rely on.

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