Why Work with IQ?

The UK's premier architectural glazing provider

The UK’s largest specialist residential glazing company

IQ Glass has grown from a small commercial glazing company in the 1990s, cutting its teeth on highly technical facade and structural glazing projects maturing into its current day status as the UK’s largest specialist residential glazing subcontractor.

Our expertise and knowledge lie in highly technical architectural glazing constructions, including structural glazing and minimalistic glazing systems. Quality and technical expertise are woven into every element of our specification, design, and installation process, ensuring that we offer the UK’s premier service to architects and specifiers.

Ease of buildability with our trusted inhouse team of Project Managers

Our project management team become involved at the early design stage to offer their expertise in resolving common encountered construction issues. Working with our trusted project managers ensures that the glazing project is delivered within schedule and budget. They are also the last to leave overseeing each phase beyond to aftercare, a turnkey solution.  

At IQ Glass, we are passionate about working alongside architects and design professionals to help realise their clients' vision.

Structural Glazing

Our years of experience allow us to create bespoke glass constructions with minimal detailing and expert quality. Our award-winning structural glazing assemblies can be found throughout the globe including on prominent UK locations. 


Minimally Framed Systems

Our innovative ultra slim framed glazing systems offer unrivalled performance and uninterrupted views. We only work with the best suppliers who showcase their quality and reliability.  

Strong Infrastructure

IQ is a group of architectural glazing subscontractor companies with locations throughout the UK. Our infrastructure and logistical departments support projects from the depths of Cornwall to the peaks of Scotland and beyond. This is only possible thanks to our excellent teams who are committed to excellence at all stages of a project.   

Regional Locations

In order to provide the best service to all our clients and projects, our regional offices have been created to provide a dedicated and more local support. The teams in our regional offices oversee all our projects in that location, ensuring that the installation and after care is exceptional.    

Proven Experience

All you have to do is look at our large portfolio of amazing architectural projects to see the value in what IQ does. Glazing installed many years ago can still be seen today, a testament to the quality and expertise of our work.     

Award winning glazing subcontractor

IQ Glass has gained recognition within the construction industry having won an array of prestigious awards consolidating its reputation as the UK's leader in architectural glazing.

Having achieved some industry firsts, including the UK's first thermally broken Invisio structural glazing systems. This example of trailblazing innovation delivered by IQ's team of technical engineers highlights the company's mission to continuosly evolve and improve, underpinning its core values with best in product and service.

Best in Glass / Product excellence: Our unrivalled commitment to delivering high performance products for longevity.

Service: We constantly strive to be responsive offering an exceptional customer and user experience. 


Loyal and satisfied clients

One of the most telling statistics of IQ’s service and product quality is the high level of repeat work we’ve undertaken for extremely satisfied contractors and architects. These clients return to IQ time and again as they know we are the best in our field.


"The staff were exemplary in terms of their professionalism and "can do" attitude. "They cared about what they were doing, our property and kept us informed on progress. The site was in a difficult location along with added complications (outside of IQ control). "The company was always very responsive and despite the hurdles/challenges referred to earlier you always felt that the company were determined and committed to delivering a first class installation of their high quality products. Thank you!"

“The people at IQ Glass are highly professional and their products are visually exciting and well manufactured. There is great attention to detail in all they do and I wouldn’t hesitate to recommend them.”

“Fantastically knowledgeable company with customer service at the heart of everything that they do. Look no further for your architectural glazing and glass room requirements.” “Fantastic company! Excellent to work with, great service and great quality products! Very impressed and highly recommended!”

“The perfect addition to any home! IQ Glass are professional, innovative and lovely people to boot! Would thoroughly recommend.” “Superb architectural glazing company based in Bucks. Imaginative solutions combined with a practical approach to matters like install and budgets! Would highly recommend.”

Work with us on your next project

Contact the team


Working with IQ Glass on a high-end resi development in Highgate, we found them to be top quality designers and installers of complex glass products including skylights, sliding door systems and Schüco doors and windows. Excellent co-ordination from the management team (Monika) ensured all details worked as planned. Would certainly use again.

Greg Bell


We’ve had nothing other than exceptional service with everyone at IQ we’ve interacted with.

We’ve been continually impressed with the products and the service that IQ have provided and wouldn’t hesitate to recommend IQ in the strongest terms to anyone looking for glazing.

Tim Astles

Home Owner

My Client in SW London recently ordered a large horizontal sliding window from IQ glass. Mark's team answered my Client's queries and specification with patience and perseverance as we had quite specific requirements. They attended site on the days agreed for the survey and the one day installation and with Razvan available to sweep up some final bits and pieces/ snagging the installation was satisfactorily completed. Of special note is that the window frame fitted with a very accurate 5 mm tolerance to each jamb which gave a very neat and tidy silicon joint.
Michael Crook Architecture Limited

Michael Crook


First impressions are excellent, and it feels very professional - you certainly get the ‘wow’ factor as you arrive in the car park. It is great to see all your products on show, and ‘active’ – being able to see those large entrance windows open and move, to stand in the glass box, and to get up close to the roof lights and other displays is really good. You can see and feel the quality of the product. Your innovation comes through too.

I loved the suspended glass box, and how you have presented the roof lights – being able to lower the unit to see it from all angles is brilliant.

Louise Leahy


Our Architect shortlisted IQ glass from a list of 5 suppliers. This decision was primarily based on cost but after we started getting into detail, IQ soon became not only the best value but also provided the best product and finish (sightlines, frames etc are practically minimal). They actually installed our windows and doors (on a large ish project totalling 55k), 2 weeks in advance of the date they had provided when we signed off on the drawings 4 months prior. This was to our surprise as lots of suppliers who were involved in the build had long delays. IQ essentially allowed us to get watertight on time and keep the project to the program. We were sceptical using them as the project is based on the Isle of Skye in Scotland and IQ’s main operations appeared to be south of the boarder, but this did not represent an issue and communication was very good. The install team were a little temperamental but mostly professional and very accommodating. They could also meet all the SER requirements needed for Scottish building regs which is a difficult box to tick. There were also some teething issues post install which IQ rectified quickly. All in all, there are some negative reviews on here which does make you think twice, but IQ fully delivered on their quote, final product, and dates. We dealt mostly with a chap called Jake and he was excellent throughout. I genuinely wouldn’t hesitate using them again for any complex project that requires some expertise. Thanks again

Edward Wickman

Home Owner

IQ has proven to be a very competent, professional and helpful provider from the point of contract through to completion. Our order was handed-over diligently from one step of the process to another, keeping us informed at all times. It was re-assuring that our calls were answered promptly by all individuals involved at each stage. The work was well planned yet flexible to fit with our builders timeline. The teams who came on-site were punctual, professional and pleasant to deal with. Reliable and trustworthy service altogether.

Fabienne Luisetti

Home Owner

Spent the day yesterday at the amazing IQ Glass showroom. We will hopefully be working with them on a new project in North London where the project will require a lot of bespoke and specialist glazing. While I was there I had the chance to walk inside their floating boardroom, a totally surreal experience. It has a glass floor and glass walls and is suspended high above the ground floor.

Rene Dekker

Rene Dekker Interior Design

I was amazed by the Sky House and showroom. Having worked in the Luxury property market for 9 years – I was blown away by the quality, innovation and creative design of the Sky House, reception and range of tailored glazing solutions that they can offer. I can see why they are leaders in their field.

Russell Rhys-Davies


A Broad Product Range

With a background in highly technical structural glass assemblies, the team at IQ are not shy in working on complex and highly technical glass installations. We are at the forefront of new glass technologies and are always looking for innovative products to introduce to the UK architectural market.

To complement our structural glass installations, we have curated a full range of contemporary framing systems that match both the high performance and minimal design we look to achieve with our glass installations.

Our exclusive range of systems includes Sieger Aluminium windows and doors, Mondrian steel systems and the minimal windows sliding doors.

“IQ Glass meets the rigorous criteria required to become an accredited Keller AG manufacturer. The team at IQ Glass are highly experienced in offering a complete bespoke glazing service, from design stages to completed projects.”

Technical Expertise

The experienced professional team at IQ Glass offer an extensive service to architects, project managers and other building professionals, supporting them every step of the way. IQ’s experience and knowledge provide the very best service and high-quality products.

Our technical team can offer advice regarding cost engineering, fixing details, specification options and design appearance. With many years experience in glazing design, we can offer insights into what solutions to common problems work best, as well as provide technical drawings assistance thanks to a full catalogue of past projects to draw from.

When embarking on a project with IQ Glass your first port of call will be with our sales department. Our knowledgeable sales team will be able to assist and advise on all matters of glass specification, NBS specifications, example images as well as general advice and guidance on what is possible and suitable for your project.

Your quotation will be completed by our expert technical estimators, who can assist with cost-effectiveness and efficiency exercises. A visit to your architectural glass showroom in Amersham is a must. IQ Glass are the leaders in architectural glazing within the UK and our extensive showroom is there to give architects, designers and clients information and direction about what glazing is suitable for your project.

In-House Design and Contract Management

See our in-depth article here for how we manage an architectural glazing installation: Our Contracts Process

Once your quotation is approved and an order has been placed your project will progress to IQ’s in-house design department. Here all the fixings, glass compositions and construction will be designed in detail by IQ’s expert designers. If CAD blocks have been provided, IQ can supersede these glass designs onto the construction DWG files. A dedicated contract manager will be appointed and will be your one point of call throughout your project. Any questions or issues, your contracts manager will be available to assist.

When materials have been ordered installation dates can be agreed. IQ’s in-house installation team will arrive on time and in full IQ uniform ready to install your architectural glazing. All installation teams have a clear hierarchy with a team leader in direct contact with your contract manager throughout the installation

Part of a Larger Infrastructure

Time, money and dedication has been invested in IQ's company infrastructure to ensure a smooth movement of goods, materials and systems to sites all over the UK.

Our commercial fleet includes over 60 liveried vans which deliver glazing systems and installation teams to building sites all over the UK. Each of our vehicles are custom fitted with all the equipment and accessories we need to conduct a successful architectural glazing installation.

With three factories and fabrication locations around the north and west sides of the M25 the IQ Glass Group is well placed to provide glazing nationwide. Our strategically placed manufacturing facilities serve IQ Glass with a steady supply of aluminium and steel systems which we install on our projects.

Post Installation Support

Once the installation has been completed your project will now be a proud home for a high specification top engineered architectural glass installation and is guaranteed to be a focal point of your design.

As public awareness of the IQ brand grows our completed glazing projects are continuously being featured in media publications such as Real Homes, Living Etc, Homebuild and Renovating as well as popular TV programs like George Clarkes Amazing Spaces, Sarah Beeny's Double Your House for Half the Money and of course Grand Designs.

IQ encourage architects and specifiers to share their architectural glazing images with us on any major social media channel which we can then share for further exposure.

Our reputation is important to us and we strive to solve any post-installation issues as swiftly as possible. There is a reason that architects specify us on their projects time and again, and our reactive response to any problems is just one of them.