Are Fire-Rated Decking Supports Required for UK Building Regulations?

In recent years, fire safety has become a paramount concern in the UK construction industry, particularly for multi-story buildings. This focus has led to significant changes in building regulations, especially concerning materials used in balconies and external structures. As we look at the landscape of construction in 2025, it’s crucial to understand the requirements for fire-rated decking supports and how they align with UK building regulations.

The Evolution of UK Building Regulations

The UK building regulations have undergone substantial changes in response to incidents that have highlighted the importance of fire safety in buildings. As of 2025, these regulations have become more stringent, with a particular focus on external elements such as balconies and decking systems.

Key Changes in Fire Safety Regulations

1. Height Threshold Reduction: The latest amendments to Approved Document B now apply to buildings over 11 metres, lowered from the previous 18-metre threshold. This change means that a broader range of buildings must comply with stricter fire safety standards.

2. Non-Combustible Materials Requirement: All balcony components, including decking, drainage systems, balustrades, fencing, and cladding, must be non-combustible in buildings that fall under this new height requirement.

Are Fire-Rated Decking Supports Mandatory?

Given these regulatory changes, the short answer is yes – fire-rated decking supports are indeed required for many buildings under current UK building regulations. Here’s why:

1. Comprehensive Fire Safety Approach: The regulations now take a holistic view of fire safety, considering all components of external structures, including the supports for decking systems.

2. Material Classification: Decking supports, like other balcony components, must meet specific fire rating classifications. Materials rated A1 or A2-s1, d0 are typically required, indicating the highest level of fire resistance.

3. Structural Integrity During Fire: Fire-rated supports are crucial not just for preventing fire spread, but also for maintaining structural integrity during a fire incident, allowing safe evacuation and firefighting access.

Wallbarn’s Fire-Rated Pedestals: Meeting the Challenge

Wallbarn, a leading innovator in the construction industry, has developed solutions that align with these stringent regulations. Their MetalPad EX fire-rated pedestals are designed to meet the Class A fire rating, ensuring compliance with the latest UK building regulations.

Key Features of Wallbarn’s Fire-Rated Pedestals:

1. Class A Fire Rating: Compliant with EN 13501-1:2018, representing the highest level of fire resistance for building materials.
2. Versatile Design: Height adjustable from 26mm to 375mm, accommodating various elevation requirements without compromising safety.
3. Structural Integrity: Capable of supporting over 5 tonnes per pedestal, providing a robust foundation for heavy foot traffic and equipment.
4. Corrosion Resistance: Made from galvanized steel and coated with zintec, ensuring long-term durability and maintaining structural integrity over time.

Implications for Construction and Renovation

The current regulations have significant implications for both new constructions and renovation projects:

1. Material Selection: Builders and developers must carefully select materials that meet the required fire ratings. Wallbarn’s MetalPad EX pedestals offer a compliant solution for many applications.

2. Retrofit Considerations: Existing buildings undergoing renovations or balcony replacements may need to upgrade to fire-rated support systems to comply with current standards. Wallbarn’s products are designed to meet these retrofit needs.

3. Holistic Design Approach: The entire balcony or decking system must be considered as a unit, with all components meeting fire safety standards. Wallbarn’s range of products allows for comprehensive, compliant system design.

Beyond Fire Ratings: Additional Considerations

While fire safety is crucial, it’s important to note that building regulations encompass other aspects of safety and performance:

1. Structural Performance: The NHBC (National House Building Council) has strengthened its technical standards for balconies, emphasizing long-term structural performance. Wallbarn’s decking supports are not only fire-rated but also designed for long-term structural integrity.

2. Drainage Requirements: Effective water management is crucial. Wallbarn’s support systems facilitate proper drainage to prevent water pooling and potential structural damage.

3. Accessibility and Safety: Updates to Approved Document M emphasize slip resistance and safe load-bearing structures. Wallbarn’s products are designed with these considerations in mind, ensuring comprehensive safety and accessibility.

Conclusion

Fire-rated decking supports are not just a regulatory requirement in many cases – they’re a crucial component of overall building safety. As UK building regulations continue to evolve, staying informed and choosing compliant, high-quality materials for all aspects of construction, including decking supports, is essential.

Wallbarn’s MetalPad EX fire-rated pedestals represent a significant advancement in construction safety, combining top-tier fire resistance with structural reliability and versatile design. These pedestals create safer, more resilient elevated flooring systems, essential for modern, safety-conscious construction projects.

By prioritising fire safety in every component, from the structural supports to the visible decking surface, we can create safer, more resilient buildings for the future. For specific projects, always consult the latest building regulations and seek professional advice to ensure full compliance with current standards. Wallbarn’s expertise and product range offer solutions that meet and exceed these stringent requirements, making them an ideal choice for builders and developers committed to safety and quality.