IQ Glass are the leading architectural glass technology and minimal framed glazing company in the UK. Utilising years of experience with glass, IQ Glass are able to mix minimal aesthetics with innovative glass technology for a beautiful yet function glass structure. We strive to understand and fulfill the highest customer's quality expectations, of performance, durability and design.


minimal windows

The slender vertical profile of minimal windows by IQ offers an almost frameless sliding glass door system able to create full floor-to-ceiling sliding glass doors at large sizes.

Modern Glass Technology by IQ Glass

Slim Framed Sliding Glass Doors

The minimal windows system from IQ Glass is a high end sliding glass door system, suitable for projects where the slimmest framing finish is required in floor-to-ceiling sliding glass doors. These aluminium sliding glass doors sit harmoniously side by side with an extremely slender vertical frame of only 21mm between glass panels.

All the surrounding frameworks of the minimal windows can be hidden in the building surround with the floor track finished flush with the floor both internally and externally.

Available in both a double glazed (minimal windows) or triple glazed sliding door system (minimal windows 4+) these large format sliding glass doors can hold units of glass up to 12m2 in a moving panel.

But the external beauty and striking aesthetics of these slim framed sliding glass doors are only a small part of their genius.

The advanced engineering that has gone into designing this exclusive aluminium framing system means that not only do the frames conform to the highest specifications of architectural glazing but also far surpass the practical and efficiency targets that modern design and building needs.

minimal windows
minimal windows

Floor-to-Ceiling Sliding Glass Doors

The thermally broken aluminium frame can achieve Uw values of 1.4 W/m2K in the double glazed minimal window system, the minimal windows 4+ tripled glazed sliding glass doors can achieve a Uw value of as little as 0.8 W/m2K!

The minimalistic framing solution has been fully tested at the prestigious Rosenheim Institute in Germany for Security, Air Permeability, Water Resistance and Resistance to Wind Load achieving fantastic results for such a slim framed system.

Below each sliding glass door system a solid neoprene base supports the aluminium sliding frames, creating a solid continuous base to fix to and acting as a drainage base to the framing. IQ Glass can detail our flush threshold drainage channel to be used in conjunction with the minimal windows.

These slim framed sliding glass doors are also extremely flexible and are able to be used in multiple configurations with almost no restriction on the number of panes with opening corners, pocket doors and integrated Juliet Balconies, always with the option for automation if necessary.

Grand Designs Sliding Doors

The minimal windows system is an award winning architectural glazing solution.

It has been used widely on some of the most prestigious and exciting architectural projects throughout the UK and abroad, contributing towards award-winning architectural designs.

White Lodge in Oxted featured these floor-to-ceiling sliding glass doors throughout the new build home and won the coveted Home of the Year from the Sunday Times. Other projects, including Dalston House and Sweethaws, have both been recognised for their use of our slim framed sliding glass doors. You can see more of our award winning projects here

IQ Glass glazing and these slim framed sliding glass doors are frequently seen in the glossy pages of design magazines and on high design TV programs such as Grand Designs. Both Russell Garden Mews and the Rusty House project have both being featured on this program and use minimal windows.

You can view our Media Mentions here at IQ in the Media.


minimal windows

minimal windows at the Showroom

Come and visit the IQ Glass showroom in Amersham to see the minimal windows sliding doors in person.

Our large minimal windows box showcases three sets of minimal windows acting as the external envelope of this standalone space.

A two track and three track minimal window sliding effortlessly away from a 90 degree corner connection, allowing you to see all of these elements in real life.

To the rear of the standalone glass box is a single sliding pocket door with an external key lock, again showcasing even more design possibilities of the system.

Investigate the threshold details, base tracks, locking and ultra slim framing in person.

Residential Projects