September 5, 2017
How to Connect Two Spaces Using Glass Links
Written by Rebecca Clayton
September 5, 2017
Written by Rebecca Clayton
Single pane or insulated glass units can be used to construct a glass link. By using double or triple glazing, a thermally efficient installation can be made. Your chosen glazing company should be able to design and engineer the building connections, the glass to glass joints and all fixings for a sleek glass installation.
Glass links are often the preferred method of connection between a new element of a building and a listed building. The Cotswolds contemporary glazing renovation project is a good showcase of this. The building was actually an extension to a listed hunting cottage. The connection between the new extension and the original cottage was required to be frameless to satisfy the planners. IQ designed this using frameless structural glass with glass to glass joints.
Glass links are often used to create a connection between the old and the new, especially on home renovation and extension projects.
Frameless glass links can be used to connect a new extension to the existing property. By using glass to form this connection you can create a transparent interface between what is new and what is old. This is often a solution that is preferred by planning officials, especially on sensitive building projects.
Another advantage of using a glass link here is that the character of the existing building is maintained, and the original property can still be viewed through the glazing without interruption.
Shenfield Mill is a good example of this. A structural glass link was included in the extension design to minimally connect the very large and contemporary new extension to the existing mill building.
Dry House is another example of using frameless architectural glazing to join a new and existing building. The regional Midlands team created an extremely minimal glass link for the Grade II manor house, joining the original building to the new pool house. The glass link allows natural light to flow through the space without altering the fabric of the original building.
You can also use a glass link to connect two separate buildings. This method can be useful to create a sheltered walkway between two separate buildings. By using double or triple glazing you can also make this space insulated as well.
This standalone structure may require additional supports (such as glass beams and fins) to hold the freestanding structure upright. This will be designed for each project depending on the span as it is not always required.
The Dress Box project featured a short glass walkway between the existing building and the new glass dressing room built into a central courtyard. The walkway had a glass roof with slim aluminium framed pivot doors on either side which granted access to the small area around the dress box.
These types of glass links are often used when the glass link also has a solid rear structure.
Glass Link at Ansty Manor - a listed property
A good example of this is the glass link at Ansty Manor. This was a Grade II* listed 16th-century manor house that had a modern extension added by our South West regional division. A glass ‘up and over’ link was included in the design to create a new walkway from the original stone cottage to the new extension. It connected the two spaces and was partially supported by a solid stone wall of the cottage.
Opening elements such as windows and doors can be integrated into the structural glass construction of the glass link. If you are considering a single glazed installation, then frameless opening doors can be integrated for a completely frameless finish.
The structural glass link at Edge House is a good example of a single glazed link with frameless doors integrated into it. The frameless glass doors required no surrounding frame or structure and sat seamlessly within the single glazed link structure.
If you are using framed and weather-sealed doors, then additional steelwork may be required within the glass link in order to form the openings that the framed doors can be installed into.
Effingham is a good example project for this. The glass link was created using structural glazing and a Vitra Pivot on both sides of the link. As the Vitra Pivot has a frame it required something to fix the frame to at the head. Here we used a slim steel support to fix the door to and to support the structural glass that was above.
If the roof of a glazed link is made of multiple panes you may require internal supports below the structural silicone joints (between each glass unit). As a rule of thumb, you will need internal supports if the joints are over 1.3m.
These internal structural supports of the roof can be made using a range of materials, depending on the design of the structure.
The Green Barn project is a good example of a glass link with a large glass roof supported by steel sections. The frameless glass link was installed to merge the old traditional cottage with the new conservatory.
A solid roof to the glass link might be useful to reduce solar radiation entering the glass link or if there are overlooking properties and you wish to maintain privacy in the link space.
Glazed link to Fairstead uses frameless glass panels for maximum transparency
A good project example of this is the glass link at Fairstead. The new garden room was connected to the existing building via a glass link. The link had a solid roof structure with frameless glass walls and frameless glass doors installed beneath it to form the walls of the glass link.
Effingham – double height glass link with structural glazing and opening Vitra Pivots at the base
Green Barn – structural glass link with steel sections support
The Dress Box – a short glass walkway between new glass box and existing building
Ansty Manor – an ‘up and over’ glass link between listed house and new extension
Fairstead – a single glazed link between garden room and house
Edge House – a single glazed walkway between two buildings
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