Glass balustrades

Types of glass balustrades

Specified in two options – frameless glass designs and post systems, these structural glazing elements are used primarily to provide an aesthetically pleasing glass barrier to protect against a change in floor level or a drop.

Frameless glass balustrades

Frameless glass balustrading relies on a channel, base shoe or profile, all three are essentially the same but named differently depending on the manufacturer/supplier. The channel manufactured from aluminium and often clad in a finish of choice acts as the fixing point for the glass.

The channel is available in various configurations to enable a range of applications, such as surface mounted, side mounted or top fixed with a flange to name a few. The channel is also available in a range of sizes to accommodate a range of toughened and toughened laminated glass.

There are several ways to fix glass into the frameless glass balustrade channel, either with a wet cement, tapped in wedges or a fixing device which in essence uses a tool or device to secure a specific ‘grip’ or torque upon the glass.

Post systems

Post based systems feature a number of baluster posts in combination with glass clamps to secure the glass.

Glass clamps are available in a range of sizes to accommodate various glass thicknesses, the clamps are available in ‘D’ or square shape and either radius or flat back depending on whether the post they are being fixed to is flat or round.

View more details on our range of bespoke glass balustrade options

Specification criteria for glass balustrades

Standards set out in relevant UK Building Regulations – Approved Document K for the Protection from Falling, Collision and Impact, and BS 6180:2011 Barriers in and about buildings, ensure that glass balustrades are specified to the required conditions.

The aim of a glass balustrade is to provide a protective barrier against a change in floor level or a drop. For both residential and most non-residential buildings, a glass balustrade (or other suitable barrier) is required where there is a change in floor level exceeding 600mm.

Regulations also stipulate that the glass balustrades need to be a certain height in order to provide adequate protection. Balustrades in internal areas (e.g. staircases, mezzanine floors, ramps) require a height of 900mm, whereas glass balustrades in external areas (e.g. balconies, external staircases) require a height of 1100mm.

The final consideration we will look at for specifying glass balustrades relates to the load bearings and requirements, which dictate forces applied to the barrier without being compromised or penetrated. There are three main load types to consider – line load, uniformly distributed load (UDL) and concentrated load.

There are various load factors that affect above load requirements, but a major consideration is the use of a particular building and the traffic levels. It is important to seek specialist advice when determining the correct load factors for your glass balustrade installation.

Considerations for designing glass balustrade systems

Several factors need to be considered when planning your perfect glass balustrade installation.

Firstly, safety, is the balustrading in a potentially crowded area? Is there a risk of fall? For example, a stadium application.

Glass balustrading can provide a safe and secure barrier for a range of applications, the type of glass and height of the glass balustrade need to be considered along with relevant British Standards, i.e. BS 6180:2011

Secondly, aesthetics, what look are you trying to create? Do you prefer the more substantial, regimented look of a glass post balustrade system and the extra sense of security and balance? Or perhaps you are looking to achieve the ‘all glass’ look with the bare minimum of interruption to the views beyond the balustrading? The great thing about all solutions is the light, fresh feeling they provide by unrestricting sunlight into any given interior or exterior.

Consideration needs to be given to the type of handrail required; does it need to be fixed to the side of the glass? If so, the glass will need drilling. Handrails or ‘cap rails’ can be fixed to the top of the glass; this use of handrail also provides an important safety benefit by protecting the top of the exposed glass.

Consult British Standards and local building regulations for specific details on the use of handrails.

Why glass balustrades remain the preferred choice for specifiers

In recent years, rising glass costs have led to a trend of substituting glass balustrades with metal railings at the tender stage, especially on high-rise and residential tower projects. While this may offer short-term savings, it often compromises the architectural intent and the long-term value of the development.

Glass balustrades remain the preferred choice for developers and residents due to their modern appearance, ability to maximise natural light, and unobstructed views. They also help achieve a higher-quality finish and increased market appeal, which can translate into stronger sales or rental values.

In addition, glass balustrades can be specified to meet all relevant UK Building Regulations and fire safety requirements, including A2-s1,d0 fire-rated systems for high-rise applications.

The Building Safety Act 2022 further strengthens these obligations, requiring robust safety performance, full documentation, and a whole-building approach to fire and structural safety, particularly for higher-risk and high-rise residential buildings. They provide robust safety performance, are durable, and can be engineered to suit a wide range of structural and aesthetic requirements.

While initial material costs may be higher, the benefits of glass balustrades – enhanced aesthetics, compliance, and long-term value – often outweigh the short-term savings of switching to metal railings.

Here at Glasstec Systems, we recommend retaining glass balustrades as a core design element, rather than value engineering them out, to preserve the quality and intent of the project.

Golden Square glass balustrade and juliet balcony project

Project: 25 Golden Square, London
Scope: Design, supply, and installation of A2 fire-compliant glass balustrades and Juliet balconies
Application: Residential property, 5th and 6th-floor balconies

Key details

• Compliance: All glazing specified to BS EN 13501 A2-s1,d0 fire rating.
• Performance: Balustrades designed to achieve 0.74 kN/m line loads.
• System: Structural aluminium U-Channels with gaskets provide support and durability.
• Handrails: Continuous welded square handrails, colour-matched to the building exterior.
• Integration: Weatherproofing and integration with Dorma roof carefully detailed.
• Access: Small maintenance gate incorporated as part of the design.

Project challenges

• Restricted Access: Limited space on-site required careful planning and installation sequencing.
• Solution: Strategic installation approach enabled safe and efficient handling of glass panels within the confined working area.

Outcome

• Delivered a compliant, robust, and visually appealing balustrade solution.
• Enhanced resident safety while maintaining clear views and architectural intent.
• Demonstrated effective integration of fire safety, structural performance, and aesthetics in a high-density urban setting.

Click here to read the full case study

Why work with Glasstec Systems for your glass balustrade project?

We work closely with architects and contractors where we help design sophisticated balustrades using expert CAD systems and designs; calculate, apply and test load bearings on the glass structure to ensure they are fit for the purpose intended.

We give importance to ensuring the quality of our fire-rated glass balustrades. This is an important feature during the manufacturing stage of the glass. We assess how the glass reacts under impact and then approve it for commercial use.

The team at Glasstec Systems can work with your project requirements and design, supply and install beautiful glass balustrades.

Click here to contact us. Alternatively telephone us on 020 8500 2818 or email us info@glasstecsystems.com