How Do Fire-Rated Paving Supports Protect Against Fire Risks?

In the wake of increasingly stringent fire safety regulations across the UK construction industry, specifying the correct building materials has never been more crucial. From high-rise residential developments to public-access rooftop spaces, there is now a growing demand for construction components that can contribute to the prevention and mitigation of fire hazards — particularly on rooftop terraces and podium decks.

One often-overlooked element of rooftop design is the role of paving support systems, especially when it comes to fire safety. While it might seem that pavers or decking are the main concern, the underlying support pedestals play a pivotal role in the overall fire performance of the installation. This is where fire-rated paving supports come into their own.

Wallbarn offers a comprehensive selection of advanced fire-rated paving supports engineered to meet the highest safety standards without compromising on ease of installation, aesthetics, or structural integrity. In this article, we’ll delve into how these systems help protect against fire risks and why they should be a key consideration in your next rooftop or raised flooring project.

Understanding the Fire Risk on Roof Terraces

Before exploring the benefits of fire-rated pedestals, it’s important to understand the specific fire safety concerns associated with roof terraces, podium decks, and other elevated outdoor spaces.

These areas are typically installed above living or working spaces, meaning that any fire originating at roof level could have catastrophic consequences for the building’s structure and its occupants. Moreover, fire can spread quickly via air gaps, flammable materials, and wind-drawn flames – especially in the case of rooftop systems constructed with timber decking or plastic pedestals.

The introduction of Class A-rated paving support systems provides a vital step forward in minimising the risk of fire spread, particularly in multi-storey environments where combustible materials are no longer acceptable under current regulations.

What Are Fire-Rated Paving Supports?

Fire-rated paving supports are specialist pedestal systems made from non-combustible materials, typically engineered from metal such as aluminium or steel. These supports are designed to meet the strictest fire classifications – including Euroclass A1 or A2 standards – which indicates they will not contribute to fire growth or produce harmful smoke when exposed to high temperatures.

Unlike traditional plastic pedestal systems, which can melt or deform under fire conditions, fire-rated supports retain their structure and load-bearing capabilities, providing greater safety and stability in the event of a fire.

Wallbarn’s fire-rated pedestal range has been developed to provide peace of mind on even the most demanding projects, without sacrificing the modular benefits associated with modern paving support systems.

Key Benefits of Fire-Rated Paving Supports

1. Compliance with Building Regulations

Following changes to Approved Document B in the Building Regulations (particularly after the Grenfell Tower tragedy), non-combustible materials are now required in external wall systems and attachments above 18 metres. Many developers are also voluntarily specifying non-combustible materials on all levels to ensure maximum safety and regulatory compliance.

Fire-rated paving supports are an essential component of compliant, high-performance rooftop build-ups.

2. Non-Combustible Materials

Wallbarn’s Class A-rated supports are made from metal components, meaning they will not ignite, melt or propagate flames. In the event of a fire, these materials maintain their shape and strength, offering superior protection compared to combustible alternatives.

3. Resistance to High Temperatures

Unlike plastic or rubber systems, fire-rated supports will not fail under heat. This characteristic is crucial in high-risk areas where heat resistance is not just preferred — it is essential.

4. Structural Integrity Under Load

Despite their fire-resistant nature, Wallbarn’s fire-rated paving supports retain the adjustability, strength, and load-bearing capacity required for rooftop paving systems. They are capable of accommodating the weight of stone slabs, porcelain tiles, and other finishes while providing level support on uneven roof surfaces.

5. Compatibility with Green Roof Systems

Fire-rated pedestals are often used in conjunction with other systems found on extensive and intensive green roofs, including drainage layers, insulation, and protection fleece. They support hard landscaping zones within green roof designs, such as access paths, seating areas, or service routes – all of which benefit from additional fire resilience.

By integrating fire-rated components into green roofing infrastructure, designers can ensure a holistic approach to both environmental performance and fire safety.

Applications for Fire-Rated Pedestals

Fire-rated paving supports are ideal for use in:

• Rooftop terraces

• Balconies and podium decks

• Green roof pathways and access zones

• Public realm landscaping over underground structures

• High-rise residential or commercial buildings

With an increasing emphasis on mixed-use and communal outdoor spaces, specifying non-combustible supports is a simple but effective way to enhance occupant safety and futureproof developments.

How Fire-Rated Pedestals Contribute to Green Roof Safety

As green roofing becomes more popular for its ecological, aesthetic, and thermal benefits, attention must also be paid to fire performance. While vegetation layers and substrate are typically low in combustibility when properly maintained, fire can still pose a risk – especially if dry organic matter accumulates.

By supporting hard landscaped zones with fire-resistant pedestal systems, green roof designs can incorporate usable space without increasing vulnerability to fire spread. Whether it’s a paved walkway through an extensive green roof or a terrace set within an intensive green roof layout, fire-rated supports offer peace of mind.

Wallbarn’s fire-rated range is specifically designed to complement its full suite of green roof systems, enabling clients to achieve both functionality and compliance in one integrated solution.

Going Beyond Minimum Compliance

While regulations specify non-combustible materials for certain applications, it’s good practice to exceed the minimum where possible — especially in high-density areas or buildings accommodating vulnerable occupants.

Specifying fire-rated paving pedestals demonstrates a commitment to safety, quality, and long-term durability. When chosen alongside fire-retardant membranes, low-flame-spread vegetation, and Class A-rated paving slabs, these supports become a key part of a comprehensive fire strategy for rooftop construction.

Why Choose Wallbarn Fire-Rated Paving Supports?

Wallbarn’s fire-rated systems are the result of years of development and rigorous testing. With a range that includes fixed and adjustable options, our products cater for varied site conditions, build-ups, and design preferences.

What sets Wallbarn apart is the blend of safety and simplicity: our fire-rated pedestals retain the convenience and flexibility of standard paving supports while delivering full compliance with modern fire standards.

From early-stage planning through to on-site installation, Wallbarn provides expert advice and product support, helping specifiers, contractors, and developers meet the challenges of fire safety head-on.

Conclusion: Safety from the Ground (or Roof) Up

In today’s building landscape, fire safety is not a secondary concern — it’s a foundational requirement. By incorporating fire-rated paving supports into your rooftop terrace or green roof build-up, you can significantly reduce fire risk while maintaining design flexibility and structural performance.

Whether you’re working on a commercial high-rise, a residential podium, or a multifunctional green roof, Wallbarn’s non-combustible pedestal systems provide essential protection beneath your feet.

Explore the full range of fire-rated paving supports today and ensure your next project delivers on safety, compliance, and quality from the ground up.