Glass Options

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Commercial use

Residential projects

Commercial projects


glass box extension

Bespoke Glass Boxes

Glass Box extensions or Frameless Conservatories made from structural glass units and supported with glass beams and fins.

Glass Box extensions or conservatories can create a completely clear, frameless extension space with no metal supports visible. By using frameless pieces of strong structural glass with laminated glass beams and fins the entire construction can be completely glass.

The full range of IQ’s technical glass solutions can be used within these frameless glass boxes for highly performing space. Heated glass can provide the sole heat source for the extension space, solar control coatings can provide effective solar protection and low maintenance coatings help lower maintenance and cleaning on these large frameless glass structures.

Frameless Glass Boxes

These types of frameless glass boxes can be used as both a conservatory and a glass extension depending on requirements. Using highly efficient double glazed, or triple glazed units these fully glazes structures can still be a comfortable warm environment with a thermal performance to adhere to Building Regulations for extension spaces. To learn more about the difference between a conservatory and an extension read our learning portal.

Glass Box Extensions can integrate any number of access openings from our slim framed sliding door system, bi fold door sets, to bespoke flush glazed hinged doors and more.

The classic 'glass box' has undergone many developments over recent times including the move from single glazing to super-efficient double glazing, less metalwork and the introduction of oversize sliding doors with smooth operation.

A structural glass conservatory is one of the most popular glazed editions to homes across the UK. It’s easy to see why. With full integration of our heated glass, solar control coatings and contemporary sliding doors, we can create a modern space which you can inhabit all year round, whilst adding great value to your property.

Frameless Glass Box Extensions and Conservatories allow you to extend your house with an ultra-modern conservatory capable of bringing more light and space into your home whilst enabling you to enjoy your garden throughout each season.

glass box extension

ASK US ABOUT OUR Glass Box Extension



steel framed glass box extension

Bespoke Extension Designs

Glass box extensions are made completely bespoke and most sizes for glazing panels integrated into these extensions can be accommodated.

These bespoke glass boxes can include a whole range of supporting methods, including glass beans + fins or steel section supports. They can also incorporate a wide range of decorative glass solutions, technical glass solutions and shapes depending on your project requirements.

Integrated Doors

Most glass or glazed extensions will want to incorporate some type of opening door within the structural glass box. These integrated glass doors can be chosen from any of our door systems including steel, timber and aluminium framing.

A minimal framed door design is often desired. This type of door maintains the minimal glass design that is created from the structural glass used as the fixed walls and glass roof.

Below are some of the most popular options for doors integrated into a glass box extension design:

minimal windows sliding doors – for a minimal aluminium frame.
Carminati Skyline Sliding Doors – for a minimal timber frame.
Mondrian External Doors – for a minimal steel frame.

But remember that you can specify any door to be integrated into the structural glass installation.

glass extension with bi fold doors

Commercial use

glass extension to office building

Glass Extensions for Commercial Architecture

Building a small glass box extension onto a smaller commercial property is ideal as it allows you to expand the building and create more internal spaces. However, these glass box extensions can also be designed in much larger sizes to provide great amounts of additional space.

The design possibilities for glass box extensions are endless on commercial properties as you are able to integrate almost all glazing elements to create the perfect extension to suit any building.

Glass roofs, frameless rooflights, sliding glass doors and bifolding doors can be used to maximise the natural light into the new space. Using IQ’s slim framing or frameless glazed elements can also provide impressive views of the surroundings whether that be of the city or general external areas.

Featured Project

IQ worked on a coffee shop renovation in Tonbridge where a glass box extension was built using a frameless structural glass roof with supporting glass beams with two sets of aluminium bifolding doors which were installed to open up the extension in the summer months.

The aluminium bifolding doors installed onto this glass box extension were designed to create an open corner, enabling the space to be opened up on both sides. By configuring one set of these doors so that they open towards the wall outside the buildings maintains the amount of space within the extension.

Slim aluminium framing was crucial for this project as the maximum amount of glazing was necessary to maximise views and natural light intake. Incorporating a structural glass roof into this extension allows natural light to pass through which is enhanced by the use of glass beams to provide support to the roof and to maintain the frameless appearance.

You can view more information about this unique commercial glazing project here


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