What Is a Balustrade? Understanding Its Purpose, Placement and Materials
If you’re planning a staircase, raised deck or balcony, chances are you’ve come across the term balustrade. But what exactly is it – and when do you need one?
A balustrade is more than just a safety feature. It’s a key structural element that helps define levels, prevent falls, and shape how your space feels. Whether made of glass, steel, or timber, it plays a crucial role in both form and function.
What Is a Balustrade and What Is It Used For?
A balustrade is a protective barrier fitted along exposed edges, such as staircases, landings, balconies, terraces and raised patios. Its primary role is to stop people from falling, but it also guides movement and frames transitions between levels.
Most balustrades are made up of three parts:
- Posts or uprights for structural support
- Infill sections, such as glass panels, rods or wires
- A handrail or top rail for grip and stability
Some systems are fully framed, others are frameless – but all serve the same essential purpose.
Where Do You Need a Railing?
UK building regulations require a balustrade if a platform is more than 600 mm above ground level. Common places include:
- Indoor stairs and landings
- Outdoor balconies and roof terraces
- Raised decking or split-level gardens
In these locations, a balustrade helps create a clear boundary and offers peace of mind – especially in homes with children or elderly residents.
Even in lower-risk areas, a balustrade can help define a space and bring a sense of structure to open layouts.
Balustrade Materials and What to Consider
Different environments call for different materials. Your choice will affect not just how the balustrade looks, but also how it performs over time.
- Glass panels: Great for maximising light and preserving views. Often used on balconies and open-plan stairs.
- Metal (aluminium or stainless steel): Durable, low-maintenance and modern. Common on decks, balconies and commercial settings.
- Timber or composite: Warm, tactile and versatile. Suitable for traditional homes or garden terraces.
There are also wire balustrade systems, which offer a discreet and open feel – ideal for garden decks or coastal properties.
What Do the UK Regulations Say?
In the UK, balustrades must comply with Approved Document K and BS 6180. Key requirements include:
- Minimum height of 900 mm indoors, and 1100 mm outdoors
- Gaps between infill sections must be no wider than 100 mm
- Glass must be toughened or laminated safety glass
These rules apply whether the balustrade is on private property or in public spaces, and they ensure consistent safety standards across different settings.
A Balustrade That Fits Your Space
Balustrades are available in a range of styles – from classic post-and-rail systems to sleek frameless glass. The best choice depends on:
- Where it will be installed
- The amount of visibility or privacy you want
- Your preferred level of maintenance
- The overall style of your home or outdoor area
At Balustradedesign, we offer balustrade systems tailored to suit staircases, balconies, terraces and decking – always built to meet UK standards and support the look you want to achieve.