Glass Options

Associated products

Commercial use

Residential projects

Commercial projects




aluminium windows from sieger

Modern Aluminium Windows

Aluminium is the first choice of framing in modern and contemporary architectural applications. The smooth and square finishes that can be achieved from aluminium window framing perfectly suit the more minimal and detail orientated design that is prevalent throughout contemporary architecture.

At IQ Glass we employ the latest advances in aluminium fabrication, thermal break technology and design trends in order to provide architects and designers with an aluminium window solution to suit their requirements.

We can offer a large range of aluminium window designs from Sieger® Systems and Schuco to suit all project budgets and requirements for your aluminium casement windows. If you are unsure as to what aluminium window will suit your design best, please do contact us for technical advice.

Slim Aluminium Casement Window

The Sieger® Slim Casement Window provides designers with an opening aluminium window with slim framing sections of as little as 51mm framing over the vent. This opening window is best suited for smaller openings where minimal framing is paramount.

The contemporary window can be specified as top hung or side hung and can be designed in opening vents of up to 1.3m high for a side hung window and 1.2m wide for a top hung window.

Stainless steel handles operate a highly secure three-point locking system and the whole aluminium window system has been tested for burglar resistance up to PAS 24 with Secured by Design accreditation pending with the windows opening on stainless steel friction hinges.

Oversized Aluminium Windows

Oversized Aluminium Windows can be designed in sizes of up to 1m by 2m for large hinged opening windows with a framing profile of 105mm. This window also has a wider range of flexibility, available in side hung, top hung or bottom hung, inward or outward opening. A tilt ’n’ turn opening window could be designed in opening sizes of up to 2.3m high to suit your specific aperture.

Every oversized aluminium window is manufactured with the latest developments in thermal break technology creating a large opening window with Uw values of as little as 1.5 W/m2K with a standard double glazed unit. All Aluminium Windows available from IQ Glass have also been tested for burglar resistance and PAS 24 in accordance with the latest building regulations and has been fully tested for their ability to withstand even the harshest weather conditions.

Stainless steel heavy duty friction hinges are used to support these large opening windows and the aluminium frames can be powder coated any RAL colour to suit your building design. The standard handles are stainless steel with an additional range of handle designs available if required.

Aluminium floating casement window at the Showroom

View the new floating aluminium window at the IQ Glass showroom in Amersham. This unique solution allows you to incorporate an opening window within structural glazing (such as structural glass walls) providing ventilation for the internal living spaces. The aluminium casement window offers slim aluminium framing that can be coated in a range of powder coatings for a bespoke finish.

Visit the IQ showroom to see the floating window installed within a structural glass wall for your yourself. To arrange a one-to-one showroom visit, email hello@iqglassuk.com or call 01494 722 880.


Locking and Hinges

Both the Slim Framed and Oversized Aluminium Window from IQ Glass have integrated locking within the minimal aluminium framing. The integrated reverse action espagnolette with 3 point key locking is operated via a stainless steel locking handle with push-button lock and key.

Hinges on both aluminium window designs are friction hinges made from high-quality stainless steel. Within the Oversized Aluminium Window, heavy-duty stainless steel hinges are used in order to better hold the weight of the large opening windows.

Sieger Architektursystem

If you ever hear the name ‘Sieger® Systems’ mentioned, that is the name of our aluminium fabrication factory who manufacture our Sieger® Systems.

Our factory located adjacent to our showroom fabricates all of our aluminium casement windows and doors in the state of the art fabrication facility. You can view the Sieger® Systems website for more information about the range of aluminium products that we offer.


ASK US ABOUT OUR Sieger Aluminium Windows


Commercial use

Modern Aluminium Windows

Aluminium windows are a popular choice for modern or contemporary windows across all building sectors including Commercial, Multi-Unit Residential, Education and Healthcare.

Aluminium windows are often the first choice for modern window designs across all building sectors. Aluminium windows can offer minimal framing, excellent performance and little maintenance making them perfect windows for modern designs.

The efficient nature of aluminium window fabrication makes these modern window frames the most cost-effective framing choice for multiple window openings as sections and profiles can be manufactured and processed quickly and effectively.

As a material aluminium is extremely durable and is known for its low maintenance nature. When full powder coated aluminium window frames need little maintenance other than general cleaning.

All ironmongery for IQ’s aluminium windows is specifically chosen for its intended purpose with high traffic windows installed with heavy-duty friction hinges for longevity and ease of use.

IQ Projects is the specialist commercial division of the IQ Group - www.iqprojectsuk.com

Sustainable Design

When it comes to the environmental criteria for large-scale buildings aluminium is a sustainable material choice with all metal elements fully recyclable. 

IQ source our aluminium sections from reliable sources and our aluminium windows have a Green Guide Rating of A. The IQ Aluminium factory seeks to minimise waste arising, promote recycling, reduce energy consumption and, where possible, to work with suppliers who themselves have sound environmental policies.

With the modern evolution of thermal break technology, aluminium windows can achieve extremely high thermal performance levels for a fully insulated glass opening. The Oversized Aluminium Casement Window from IQ can be installed with a triple glazed unit if higher thermal performance levels are required for your project.

Featured Project

IQ recently completed a complete window replacement and renovation project at the Henley Rowing Museum located on the banks of the River Thames.

New aluminium casement windows were installed around the top floors of the museum buildings for the offices on the upper floors.

All aluminium windows here were designed as top hung to open outwards and provide ventilation to the upper floor offices with the thermally broken aluminium frames powder-coated in RAL 7016 Anthracite Grey.

Henley Rowing Museum holds 20,000 items covering the international sport of rowing, the history of Henley on Thames, the story of the River Thames and the children’s book Wind in the Willows, including objects, photographs, books, ephemera and archive material.

You can find out more about the commercial architectural glazing installed at Henley Rowing Museum at our Commercial Project Gallery.


Sieger® Slim Casement Window Technical Specification Sheet

Sieger® Standard Casement Window Technical Specification Sheet


What is an Anodised finish?

What to Consider when Buying Architectural Glazing