Red offers aluminium windows from two main suppliers, to exactly match your quality and budgetary requirements.


Aluminium is an ideal material to use for frames as it’s light and strong with a slim profile that maximises the glass area. The metal’s strength and flexibility allows for great design flexibility too.


Aluminium has excellent thermal and sound insulation properties and is a very affordable option when compared to other frame materials.

As it is virtually maintenance free, it is also perfect for use in more exposed locations - it does not swell, crack, split or warp over time and so offers an extended product life.


Environmental sustainability is also an attractive benefit - the recycling process of aluminium requires just five percent of initial energy, one of the highest rates compared to other metals.


NB: Aluminium can be more expensive than our composite option.



One of the world’s leading producers of specialist window and door systems for over 30 years, German manufacturer Sunflex leads the way in innovation and design. Offering countless high-end features, with slim sight-lines and contemporary, square-edged profiles throughout, Sunflex aluminium windows are renowned as being the best looking on the market. They are the only German-made systems with a BSI Kitemark certificate.

They are also one of the most weather-tight systems available, with 900Pa water tightness (Class 9A), 600Pa BS EN 12207 air permeability (Class 4) and resistance to a wind load of 1,600Pa (Class A4). Awarded, ‘Secured By Design’ accreditation, they are designed and manufactured to police-preferred standards with multiple security features.


Sunflex also produce bi-fold doors, sliding doors, French doors and front doors. Please note: Lead-time for Sunflex windows and doors is approximately 6-8 weeks, depending on requirements.



We also offer aluminium windows produced by two leading UK suppliers of aluminium glazing systems. These windows and doors supplied through Red are manufactured by a trusted local fabricator and offer a combination of competitive pricing and good quality (albeit not as high-end as the Sunflex option).

RED offers an extensive product range for both domestic and commercial applications, including windows, entrance doors, sliding and bi-fold doors and curtain walling. Items can be built to be ‘Secured By Design’ compliant if required.



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