Ultra Slim Doors - IQ Glass International

Our ultra slim doors have high-quality, thermally broken framing profiles and flexible designs to enhance any building design

Slim Framed Sliding Doors

Slim framed sliding doors can reach impressive sizes of up to 29m2 for an oversized finish, with only subtle differences between a sliding glass door and structural glass walls.  

Sliding glass doors can be specified with sightlines from as little as 20mm, complete with a flush threshold to create a seamless transition between indoor and outdoor environments. 

These oversized sliding systems are perfect for achieving an indoor-outdoor style of living, as well as maximising natural light whilst delivering almost uninterrupted views from inside the property.  

Triple Glazed Doors

There are many advantages to specifying triple glazing within your glazing package. Triple glazed doors can reach greater heights, are more thermally efficient, more secure and have higher weather performance levels. 

Our minimal windows 4+ triple glazed sliding door has undergone full hurricane testing with cyclic wind pressure loading tested to 3510Pa in accordance with TAS 203.

Ultra slim pivot and casement doors can also use triple glazing to achieve unparalleled performance levels whilst still maintaining slim profile and sightlines. 

Other Ultra Slim Door Options

IQ also offer ultra slim doors including both steel and aluminium framed solutions. 

Our slim pivot doors are the first on the UK market to have been fully tested for air permeability, resistance to wind load, water tightness and security. The system also has a magnetic sealing strip in the base for increased security and weatherproofing.

A range of casement doors can also be incorporated into a bespoke glazing package with a variety of glazing options available such as ultra slim fire-rated doors.

Why Work With Us

We are able to work with designers and specifiers from an early stage of a project to ensure that no compromises have to be made on design. Our expert glazing technicians are here to help your design become a reality, lending their years of experience to your project team for design advice, performance guidance and cost implications. To find out more or arrange a meeting with one of our expert glazing consultants or just contact the team on 01494 722 880.


Our years of experience allow us to create bespoke glass constructions with minimal detailing and expert quality.


Our specialist in house contract management team oversees your glazing project from beginning to end.


Our technical skillset and high levels of customer service mean that architects and contractors return to us time and again for their commercial glazing projects.


Our in house team of CAD designers and engineers contains twelve expert designers and is fully supported by a structural engineer for specialist structural glass calculations.


Our expert glazing specification advisors are available to help you finalise your architectural glazing designs before the tender stage.


We offer a full NBS style specification service for architects who wish to ensure the correct aesthetic and performance is achieved from their documentation.

International Glazing Blog

IQ International specialises in providing structural and architectural glazing solutions for some of the most prestigious construction projects around the world. Our blogs provide technical glazing advice about a range of specialist glazing topics. From solar control glazing to beachfront glazing specification, IQ are on hand to provide helpful information.

Dublin Bay On Site 3

IQ Glass on Site in Ireland 

Our associate director Emma Greene received a warm welcome from over 20 guests and industry experts in Guernsey, where they exchanged invaluable insights into architectural glazing recommendations tailored for marine environments…

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Where there’s a will, there’s a way. IQ have installed glazing in some extremely tricky locations such as a rocky hillside in Africa, which sat on the edge of a cliff and only had steep dirt road leading to it. Our skilled installation teams experience allows them to think of innovative ways to safely transport the glazing for installation. Read More

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Not only does IQ have world renowned British project management skills, but we also offer a wide variety of award-winning glazing systems that use high-quality glass manufactured in Europe. Our year of experience installation bespoke glazing packages around the world allows us the know how to advise on glazing for all types of climates. Read More

Address: IQ Glass Global Headquarters, Sky House, Raans Road, Amersham, UK, HP6 6FT