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steel windows to a modern living space

The Modern Steel Window

Mondrian® Slim Windows merge the beautiful designs of traditional steel windows with modern performance requirements. Mondrian® Slim framed windows are made from steel or architectural metal and are all fully thermally broken to provide you with unparalleled insulation from a steel frame.

The Mondrian® Slim Window range has a steel frame from 47mm wide for an extremely slim and clean window design. These slim framed steel windows can be engineered into inward or outward opening windows including fixed and multi-light window solutions. Our steel fabrication factory can engineer these steel windows to large sizes in order to offer projects large elevations of steel framed glazing.

Artisan Industrial Design

IQ fabricate our steel windows in house at our specialist steel and bronze fabrication factory in order to achieve the highest levels of design and performance. These art deco window designs are an integral element of modern architectural design and deserve the highest level of attention and precision.

As such our highly specialised industrial window system designs can not only be manufactured from the traditional galvanised steel but also Corten Steel, Architectural Bronze or Stainless Steel for a truly unique appearance to your steel windows. From these materials, our in-house finishing workshop can create a range of different finishes from brushed to highly polished or patinated.

Our matching door system, Mondrian® Slim Doors, is also available for a cohesive steel window and door design. Why not combine these art deco glazing products together with a Mondrian® glass roof to create a Mondrian® style glass extension?

floor to ceiling steel framed windows to house design

Mondrian® Windows @ The Showroom

Come to the IQ Glass showroom in Amersham to see our Mondrian® Window range for yourself.

We have a range of steel windows available to view in a variety of finishes and designs. Our Mondrian® Product selector will help you select the right materials and sections for your project and our consultants are available for specification advice.

At the showroom, we showcase a range of specialist materials including Corten Steel windows to match the Mondrian® External Belgian doors and architectural bronze framed windows that are patinated. 

Book a showroom visit to view our Mondrian® windows in person.


architectural bronze arched window pivoting

The Mondrian® Glazing Website

Visit our dedicated Mondrian® Glazing website for all the detailed information about the Mondrian® Range. There are a variety of Mondrian® Windows available for you to choose from depending on your budget, performance requirements and design preference.

Here we detail all steel window systems available with maximum sizes, profile sizes and performance characteristics.


If you have any questions please do contact the team at IQ Glass on 01494 722 880 for further information.

ASK US ABOUT OUR Mondrian® Slim Windows



Mondrian® CWS-65 Slim Technical Specification Sheet


Mondrian® Glazing Dedicated Website

Thermal Breaks in Metal Windows and Doors