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Mondrian Glass Extension at IQ Showroom

Bespoke Steel Framed Glass Box

Mondrian® Glass Box Extensions are similar to the frameless effect structural glass extensions, however with the Mondrian® system the box extension is framed with sophisticated steel profiles to create a Bauhaus style glazed extension.

Steel supporting beams are incorporated within the design and blend elegantly with the crisscrossing glazing bars that result in the traditional industrial aesthetic.

Highly glazed extensions are used to not only create more living space but also to improve the influx of natural light within the existing living spaces.

Utilising steel framing to the glazed extension means that the trendy glazing can be included within the overall Art Deco style of properties.

The glazed box extensions are manufactured from thermally broken steel, offering ultra slim framing while providing enhanced levels of insulation and thermal performance.

These steel framed glass extensions are designed and manufactured bespoke to each project to create a tailored design to the exact requirements and specification for each project.

The steel profiles are hand welded and finished to the project measurements and desired finishes to create a completely unique, bespoke design.

Integrated steel systems

Within the steel frame glazed extension, various opening systems can be integrated within the design to provide ventilation and access to and from the adjoining spaces.

There is a whole range of door and window designs and configurations to choose from to create the exact design envisioned by the architect and homeowner.

The Mondrian® range is manufactured from a choice of steel or architectural metal such as architectural bronze. For a cohesive design, the same metal can be used for other areas of Mondrian glazing including internal and external window and doors.

The roof of the glass box extension can be designed with steel framing in keeping with the design on the glazed walls of the steel framed glass extension.

Keeping the roof of the extension the same design as the vertical glazing enables light to flood down into the property to further enhance the bright and airy internal atmosphere.


In House Fabrication

In House Fabrication Facility

The artisan Mondrian® steel systems are all fabricated by hand to the bespoke measurements of each individual project. The Mondrian systems are fabricated at our specialist steel fabrication facility in order to provide the highest level of performance and design.

For a truly unique design, our in-house fabrication facility offers the whole array of metals and finishes to choose from including galvanised steel, architectural bronze, Corten steel, stainless steel and chemically blackened steel. From these materials, the fabricators provide a whole range of bespoke finishes to create the desired look for the project.

The team of IQ fabricators ensure that each product they create is manufactured to the highest standards to result in an exceptional finish each and every product.

Mondrian systems available to view at the Showroom

At the IQ Glass showroom, there is a whole selection of Mondrian® Glazing systems to see in the flesh, from full-size doors, windows, internal sliding doors and fixed walls.

In the Courtyard there is a large Mondrian® glass box manufactured from thermally broken Corten steel profiles, achieving a super contemporary Art Deco-inspired finish.

The Mondrian® systems come in a range of configurations and finishing option, in the showroom there are a huge selection of full-size systems and a display of all the finishes that are available to help you decided which system and finish you would like for your project.

Simply book an appointment to visit the Amersham showroom where you can see the Mondrian® glazing systems in person, give us a call on 01494 722880 or email



ASK US ABOUT OUR Mondrian® Glass Extensions



Invisio Structural Glazing Brochure


Mondrian® CWS-50 Slim Product Information Sheet

Mondrian® CWS-65 Slim Technical Specification Sheet