Slim Framed Steel Windows and Doors

Ultra Slim Thermally Broken Steel


Find out more

Talk to an Expert

Visit the Showroom

Ultra Slim Thermally Broken Steel

  • Ultra slim thermally broken steel systems

  • Exceptional thermal performance

  • Long wearing, durable metal with a long life expectancy

  • Large tested sizes available

  • Certified finishing options suitable for various locations

  • Wide range of bespoke metallic finishes

  • Tailor-made solutions to meet individual project requirements


Slim framed steel systems offer industrial style metal frames designed to combine glazing with a traditional design with modern performance values.

The architectural metal of the steel profiles are fully thermally broken and available in a range of finishes, in order to achieve your desired visual effect.

The steel systems offered by IQ Glass are characterised by their exceptionally slim frames, allowing the internal living spaces to be flooded with natural light without compromising on modern performance values.

This minimal steel framing creates that slim framing effect in consonance with industrial loft-style buildings and art deco design. These elegant steel-framed windows and doors create a traditional element to architectural designs that add an 'on-trend' aesthetic to both the external façade and interior design.

The Most Exclusive Steel System

As well as including a full thermal break and having super slim sightlines, our steel glazing systems offers unprecedented levels of performance and durability.

The slim steel frames can be used to create a wide variety of openings including typical hinged windows and doors, fixed glazing, steel bifold doors and pivoting openings. The steel profiles are designed for both private residential use and public-use buildings, thanks to the adaptable designs.

The beauty of steel is the ability to work outside the 'box. Various configurations have been tested and detailed. However, the project team at IQ Glass are able to help develop new and unique applications of the system to suit your project requirements. This includes larger sizes, specific opening types, and particular performance targets.




Steel Framed Windows

The slim framed steel is a full thermally broken steel solution able to create a wide range of openings. 

Steel window possibilities including large steel-framed facades, slim framed fixed steel windows, side hung steel windows, top hung steel windows, vertical pivoting steel windows, horizontally pivoting steel windows* and bifold steel windows. 

Glazing bars within the opening can be true glazing dividers or applied glazing bars in your choice of configuration, with a range of design options.

Opening windows can easily be integrated into larger steel-framed facades or paired with opening doors whilst maintaining very minimal sightlines. 

*Horizontally and vertically pivoting windows are available in a range of shapes including oval and arched windows. All installations are bespoke engineered on request. 


Slim Steel Framed Doors

The slim steel frames are the perfect solution for modern door openings, with unique glazing bar designs available to create an architectural feature.

The minimal steel sightlines maintain a modern industrial design whist the thermal break and highly insulated glass ensure the doors achieve high levels of performance. 

Again, the steel profiles are able to create a wide range of steel door openings including single doors, double doors, large patio door arrangements, pivot doors and bifolding doors. 

The steel bifold door offers an ultra-slim sightline, allowing the glass to be the primary feature.

You can easily integrate these steel-framed opening doors within a larger steel-framed facade or pair them with side glazing and opening windows. The connection profiles between windows and doors are still extremely slim, achieving a coherent finish. 

There are a wide variety of slim steel glazing solutions on display at the newly renovated IQ Glass showroom, with the latest additions including a horizontal pivot window and vertical pivot window installed alongside fixed glazing.

Utilising modern thermal break technology, these slim steel framed glazing systems achieve unparalleled thermal performance levels without having to compromise on design. are manufactured completely bespoke for each project.

Being able to see these bespoke steel glazing systems up close and in a real-life situation can help to ensure that the right solutions if chosen for your project. Showroom visits also offer one on one time with a technical sales advisor to discuss all glazing options.

For more information on the new steel glazing installations in the showroom, click here.

Click here to book your showroom visit today. 



The steel profiles are fully thermally broken to ensure steel framed glazing installations are suitable for year round use. This allows us to achieve high levels of thermal insulation when paired with insulating glass units.

Steel systems are suitable for international projects too, as the thermal break allows colder climates to utilise the modern industrial designs to prevent heat loss through the glazing.

The system is designed for external use and has been tested for air permeability and water tightness. Various opening types were tested with all applications to ensure a variety of applications in different locations were fully funtional and high performing.

Specific performance requirements can be met with bespoke engineering solutions, simply let us know what your specific performance requirements are and we can provide the solution.

Bespoke Finishing Options

All profiles are finished to your specified colour/finish. The same finish can be chosen for window, door and fixed glass systems for a seamless finish.

There are a range of finishes available including standard PPC in any RAL colour.

There are also a range of different finishing grades possible for inland and coastal projects.

As well as Matt powder coated finishes you can also choose from a selection of PPC finishing options with varying levels of gloss and texture. 

In addition, you can also specify a selection of special metallic finishes which offer a true metallic design including various colours of bronze.

Handle Options

The steel systems present a range of handles for both the windows and the steel door openings. 

The handles are fully interchangeable with the various escutcheon options. 

There are handle options to suit any exterior or interior design, from contemporary to traditional.

All handles are available in brushed stainless steel which can be PPC coated to match the frame finishes. 

When selecting the handles for steel doors you also have options on how to integrate the handles into the frame. Please ask a member of the technical team for all the options or if you would like image examples.