Comparing Fire-Safe Decking Options: Porcelain vs Cement-Fibre vs Aluminium

When it comes to creating beautiful, compliant and long-lasting outdoor spaces, safety is non-negotiable. Since updates to the UK Building Regulations (Approved Document B), the use of combustible materials on balconies, terraces and rooftop spaces is no longer permitted.

For architects, developers and contractors, this has led to a new era of non-combustible decking solutions. Among the best options available today are porcelain, cement-fibre, and aluminium decking — three systems that combine fire safety with exceptional performance and design flexibility.

At Wallbarn, we offer all three materials, each carefully engineered to deliver safety, durability and aesthetic appeal for a range of project types.

Understanding Fire Ratings

Before exploring the differences between these materials, it’s important to understand how fire ratings work.

Decking materials are classified under EN 13501-1, which measures combustibility and contribution to fire. Ratings range from:

• A1 and A2 – Non-combustible

• B to E – Limited or moderate combustibility

• F – Easily flammable

For compliance in high-rise and multi-occupancy buildings, decking must achieve at least Class A2-s1,d0, with A1 being the highest possible standard.

Wallbarn’s porcelain, cement-fibre and aluminium decking all meet these fire-safety benchmarks, ensuring total peace of mind for specifiers and building control officers.

Porcelain Decking: Refined and Resilient

Porcelain Decking offers a sophisticated surface finish that blends architectural style with Class A1 fire performance — meaning it is completely non-combustible.

Key Benefits:

• Class A1 fire rating for maximum compliance

• Resistant to moisture, frost and UV exposure

• Scratch-proof and stain-resistant surface

• Available in a wide range of colours and finishes

• Minimal maintenance — no sealing or staining required

Porcelain tiles are ideal for rooftop terraces, podium decks, and balconies where design impact and longevity are key. Their surface remains consistent and colour-true even after years of exposure, and they integrate perfectly with Wallbarn’s adjustable pedestal systems for fast and accurate installation.

Porcelain is particularly suited to premium projects seeking a sleek, natural-stone aesthetic with a luxury feel.

Cement-Fibre Decking: Timber Look, Fire Safety Built-In

For those who prefer a traditional timber appearance without the associated fire risks, C-Deck Cement-Fibre Decking provides the perfect compromise.

Key Benefits:

• Class A2-s1,d0 fire rating — non-combustible and compliant

• Authentic wood-grain texture and natural tones

• Resistant to rot, warping and insect damage

• Low maintenance — no oiling or varnishing needed

• Fully recyclable and environmentally friendly

C-Deck combines the look of real wood with the performance of modern cement-fibre composites. It’s ideal for both residential and commercial projects, offering a natural aesthetic that’s safe, stable and sustainable.

This system excels where designers want warmth and texture but must meet strict fire-performance requirements — for example, high-rise balconies or communal roof gardens.

Aluminium Decking: Strength, Safety and Style

Aluminium Decking has become the go-to choice for many developers looking for a durable, contemporary alternative to wood or composite materials.

Key Benefits:

• Class A1 non-combustible

• Lightweight yet extremely strong

• Corrosion and UV-resistant

• Slip-resistant surface finish

• 100% recyclable and sustainable

Aluminium decking offers excellent dimensional stability, even under temperature extremes. It doesn’t warp, swell or fade, and requires virtually no maintenance — making it a cost-effective long-term solution.

The clean, linear appearance of aluminium boards complements modern architecture perfectly. When paired with Wallbarn’s MetalPad EX or A-Pad pedestals, it creates a fully compliant and elegant system from the ground up.

Comparing Aesthetics, Maintenance and Cost

Each system offers distinct advantages, allowing specifiers to choose based on visual preference, budget, and environmental goals.

Installation and Integration

All three systems are fully compatible with Wallbarn’s Class A pedestal and support structures, ensuring a complete, compliant build-up.

• Porcelain decking is typically laid using our adjustable pedestals, providing perfect levelling and easy access beneath the surface.

• C-Deck cement-fibre decking integrates seamlessly with our non-combustible pedestals, delivering stability and drainage efficiency.

• Aluminium decking works flawlessly with MetalPad EX systems, forming a lightweight and resilient structure.

This modular approach simplifies installation, reduces on-site time and ensures long-term performance — essential for both large-scale developments and bespoke projects.

Which Fire-Safe Decking Option Is Right for You?

Choosing the ideal material depends on project priorities:

• For premium aesthetics — Porcelain decking delivers a sophisticated architectural finish.

• For timber appeal — C-Deck offers the warmth and texture of wood without the fire risk.

• For strength and longevity — Aluminium decking leads the way with unmatched durability and minimal maintenance.

Whatever your preference, all Wallbarn systems guarantee compliance, quality and performance, backed by over 25 years of industry experience.

Final Thoughts

The shift towards non-combustible decking has transformed the way outdoor spaces are designed and built. With solutions like porcelain, cement-fibre and aluminium decking, Wallbarn empowers architects and contractors to create safe, stunning, and sustainable terraces that stand the test of time.

Every system is backed by expert technical support, rigorous testing, and dependable UK stock — ensuring you get the right product, delivered on time, and installed with confidence.

To learn more about which fire-safe decking option is best for your next project, explore the full Wallbarn Non-Combustible Decking Range or contact our specialist team today.