Alu-clad Sash WIndows

A new development for The Knight Collection is our aluminium-clad timber sash window, a perfect solution for those looking for an affordable sash window that is both authentic looking and low maintenance. The timber element of the window can be manufactured from various materials all of which can be painted or stained to give various internal finishes. Externally the window is capped with powder coated aluminium which can be in any RAL colour of your choice.

Product Details

Our alu-clad sash windows are a spring loaded design which gives them the look and feel of a traditional sliding sash windows however gives us more space for the two sashes enabling us to install larger glazing than previously possible as well as the extra aluminium capping. This design overcomes many of the disappointments often seen with aluminium clad sliding sash windows and offers a more energy efficiency window than is usually available in a sliding sash design.

All Knight Collection windows as standard and are equipped with a patented locking system which offers enhanced security protection for your home. 

Our Alu-clad sash windows are manufactured with a spring balanced mechanism giving the look and feel of traditional box weighted sash windows however saving on space. This design allows us for more space for the two sliding sash windows which in turn enables us to support thicker glazing up to 36mm. This means that we can now support triple glazing in our aluminium clad sash windows enhancing the overall U value of the windows. We also have a range of other possible glazing options such as standard argon filled double glazing and ultra this Krypton filled double glazing units to give the look of single glazing with the energy efficiency of double glazing.


Manufactured with a timber core our sash windows have the majority of the features found on original sash windows from yesteryear including a thin top and mid rail, deep bottom rail, mechanical joints, authentic putty and glass lines as well as various astral and Georgian bars available.

Completed Projects

Stockport Project

After going through a series of upgrades to their family home, the homeowners decided of this Victorian property decided to replace their standard UPVC windows, Looking for something that was true to the original design of the home and also sympathetic to the style of the building they decided on a truly authentic sliding sash window in Timber.

West Kirby Project

Sometimes the area is a must! Without doubt one of the most popular areas within Wirral right now is West Kirby. Having looked around at all the houses for sale in West Kirby our clients could not find exactly what they wanted, so they decided to create it.

Lake District Project

Whilst completing a series of modernisations to this Victorian Stone Villa, the homeowners decided to replace the existing windows with an aluminium clad sliding sash window.