Steel Look Internal Windows and Doors

Ultra Slim Thermally Broken Aluminium


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Steel Look Internal Glazing

IQ also offer a range of bespoke internal glazing solutions to suit all interior design styles. Many of these can be specified with applied glazing bars to create a steel look internal door of steel look glass partition. 

Internal steel look glazing, similarly to steel look external glazing, can be designed in a way to being an elegant touch to traditional interiors or blend in with an industrial style space. 

Incorporating steel look aluminium internal glazing into a project as opposed to authentic steel glazing has many benefits, including being lower maintenance, more cost-effective and the lightweight properties of the profiles allows steel look aluminium internal doors to be opened with ease.

One point to note is that for internal fire rated glazing this must be steel or timber to ensure that adequate protection is provided, as the melting temperature of aluminium framing profiles is lower than that of steel and timber framing profiles. 

For internal glazing, steel look partitions may be a great solution for creating internal separation, while still maintaining the gritty, harsh look of steel frames. 

Our commercial projects often opt for steel look partitions due to their exceptional fire resistance, design capabilities and aesthetics. With many commercial developments in old British buildings that have been renovated, the steel look frames provide that industrial feel that the building would have had back when it was built. 

Of course, these systems can be specified for residential projects. We often see steel look frames used for residential developments that are focused on the crittal style of windows and doors. The crittal style was made popular in the 1920's-30's and is synonymous with the early 1900's British architecture. 

Steel Look Glazing At the Showroom

Located just outside of London is the UK's largest architectural glazing showroom. The IQ Glass showroom has recently undergone a huge renovation to expand the space and display more high performance glazing systems in real life situations. 

Among these systems is an aluminium steel look glazing installation with steel look aluminium casement doors, surrounded by slim framed steel look glazing. The IQ showroom is an interactive and immersive experience that allows people to see just what can be achieved with innovative glazing solutions. 

If you are travelling to the showroom by car, IQ Glass is situated in Amersham which is easily accessible from the M40, M4, and M25 Motorways. Amersham also has excellent train links into London with the Chiltern line making it from Marylebone to Amersham in just half an hour.

There is also a helipad located a short distance from the office. If travelling by helicopter and IQ employee will collect you and bring you to the showroom. 

Book your visit today.



As all of our external glazing systems use a full polyamide thermal break and come with a low e glass coating as standard, our aluminium steel look glazing achieves unparalleled performance levels.

Both the Sieger Legacy Casement Window and Door have full weather testing for air permeability, wind load and water tightness, and

Our systems use a mix of true and applied glazing bars to achieve optimal performance levels without having to compromise on design.

Each system is manufactured bespoke and will come with its own Uw and weather testing values, so for more specific details, get in touch with the IQ team today.

Frame Finish & Glazing Options

One huge advantage of using aluminium framing profiles is the wide variety of finishing options available for the framing. Our profiles can be finished with a polyester powder coating in any RAL colour, and with over 200 colours to choose from plus options such as matt or glossy, the options are endless.

Utilising PPC and grooves, special finishes such as a timber effect design can be achieved. Another less common frame finish for aluminium is anodising.

Our aluminium steel look glazing system can also be specified with a wide range of glazing options including, but not limited to, low maintenance, solar control and low iron glazing.

This allows each system to be manufactured to suit specific design requirements, both performance-wise and in terms of aesthetics.


IQ have a range of bespoke ironmongery, each with its own set of finishing options. For the aluminium steel look doors, most handle options come with a euro cylinder keylock as standard for enhanced security.

There are handle options to suit any exterior or interior design, from contemporary to traditional. Depending on the choice of ironmongery, we have some stunning finishes available such as satin chrome and antique brass.

For more information on the different steel look glazing systems available and the design options for each, contact the team at IQ today who will be happy to assist.

Sieger Legacy TH+

The outstanding thermal performance and maximum light ingress of the Sieger® Legacy TH+ systems are combined with the classic design of steel framed windows and doors. Each sleek, contemporary-looking, thermally split aluminium profile has a sightline of just 29 mm and provides unmatched thermal insulation.

With the Sieger Legacy TH+ windows and doors have tested Uw values of 0.84W/m2k to 0.91W/m2k which is almost 40% lower than the original Sieger legacy systems. This is due to the framework being fully thermally broken. Having frames with a thermal break means that a non insulating material sits between the external frame and internal frame. This minimises the chance of a "thermal bridge" from forming. 

A huge variety of window configurations are available when specifying the TH+ system. This allows for architects to fully design bespoke window systems that will be sure to match any project idea and aesthetic.