Knight Essential - Aluminium Windows | John Knight Glass

Essential Aluminium Windows

Our Essential range of aluminium windows are our entry level aluminium windows. Available in a wide range of customisable options and constructed from extremely durable aluminium, these window are a great choice for any home.

Essential Aluminium Windows

Product Details

Why The Essential Range


Essential aluminium window frames are fitted with a polyamide bridge between the external and internal face creating a thermally broken frame which prevents heat transfer from within your property to the outside world. This technology enhances the thermal properties of the overall window, helping to improve the warmth and comfort within your home.

Thanks to the large range of styling options available within this window range, you can fully customise them to suit any type or style of property. They are available in over 200 RAL colours and can be manufactured with alternative colours on the inside and out for complete flexibility. They can also be supplied in a range of different aluminium frame profiles including ovolo for a softer modern look, chamfered for a traditional look and square edge for a contemporary look. 

Essential windows are supplied with multi-point steel locking mechanisms that exceed British Standards ensuring that, when combined with the high strength of aluminium, you can be confident that installing these windows within your home will keep you and your family safe.

We can also supply matching doors, roof lanterns and bi-folds to match the Essential range, so if you are looking to upgrade all of the glazing within your home or and planning a new build we will be able to design and supply the full package. 


Slimline frame

The slimline frame is ideal for both modern and traditional properties as the slim profile looks perfect on a sleek modern property and also closely replicates the look of steel on more traditional properties.

High security.

Our Essential aluminium windows feature a multipoint steel locking system ensuring you can sleep safely at night.

Energy efficient double glazing

Compatible with the latest double glazing technology helping you to achieve a low U value throughout your home.

Unique masked trickle vent

The unique trickle vent is extremely discreet making it hardly noticeable achieving a more stylish window.

Large range of frame profiles 

The Essential range consists of three different profiles ensuring there is a style to suit all building styles.

Available in a range of colour options

Standard colours including grey, black and white, custom colours also available on request. Finished in a maintenance free powder coating.

Completed Projects

Aluminium Orangery, Wirral

The owners of this large family home have been modernising, updating and extending the property over the past 8 years to create their dream home. Their most recent addition was to remove an old, outdated, cold conservatory and replace it with a stunning modern, energy efficient orangery. All windows used in the construction of the Orangery are aluminium windows from the Allstyle range.

Dual aluminium roof lanterns,

Allstyle Aluminium windows, Centor bifold doors.