Why Metal Door Frames Matter in Fire Safety

When it comes to fire safety in modern buildings, the focus often falls on alarms, sprinklers, and emergency exits. But one of the most crucial – and often overlooked – elements is the humble metal door frame. These are not just about form and function; they are integral to maintaining fire barriers and ensuring compliance with the Australian Standard AS1905.1.

Metal door frames provide the essential support and structure for fire-rated door assemblies. Unlike timber or plastic alternatives, metal frames offer superior fire resistance, strength, and stability. In a fire event, these qualities can mean the difference between effective compartmentalisation and a failure in passive fire protection.

How Frames Support Fire-Rated Doors

Fire doors are only as effective as the frames that hold them. If a frame warps, burns, or breaks under heat, the door assembly fails – regardless of its rating. That’s why all fire doors certified to AS1905.1 must be installed in equally compliant metal door frames that have been tested and rated as part of a full doorset.

At AAFD, our metal door frames are manufactured with precise tolerances, robust materials, and tested integration methods that ensure each component contributes to the overall fire resistance level (FRL). This includes frame-to-wall fixing methods, reinforcement plates, and provisions for fire seals and tags.

Key Advantages of Metal Frames in Fire Safety:

• Non-combustible materials that withstand high temperatures
• Structural integrity under fire and pressure
• Seamless compatibility with fire-rated door leaves
• Backfilling options with tested materials for added resistance

By choosing metal door frames that meet the AS1905 standard, you’re investing in more than compliance – you’re improving life safety and structural resilience.

Understanding AS1905.1 and Passive Fire Compliance

The AS1905.1 standard, formally titled “Components for the protection of openings in fire-resistant walls – Part 1: Fire-resistant doorsets,” sets the benchmark for the performance, design, and installation of both fire doors and their frames. Under this standard, a fire door set is defined as a complete assembly, including the leaf, frame, hardware, seals, and labelling – all tested together for compliance.

At AAFD, our manufacturing process is specifically designed to meet and exceed these requirements. Every frame we produce is built to support AS1905-certified fire doors and is constructed using materials and methods validated through rigorous testing.

How Compliance Is Achieved:

• Frames are fabricated from galvanised steel or stainless steel, ensuring fire resistance.
• Joints and welding techniques are selected to maintain integrity under fire load.
• Reinforcement plates are installed to accommodate hardware without weakening the frame.
• Each frame is backfilled using fire-rated materials for added insulation and compliance.

We also incorporate additional passive fire protection elements, such as intumescent seals, which expand in the event of heat exposure, helping to seal gaps and prevent smoke or flame from passing through.

Passive fire protection is not just a box-ticking exercise; it plays a fundamental role in building safety by slowing down the spread of fire and giving occupants more time to evacuate. Properly installed, AS1905-compliant metal door frames are a cornerstone of that system.

Learn more about our commitment to compliance and frame quality by visiting our Metal Frames Brisbane page.

Have questions about compliance or custom frame needs? Contact Us to speak with our expert team.

Metal Door Frames and Structural Integrity in Commercial Builds

In commercial construction, the structural performance of every building element is under scrutiny — and metal door frames are no exception. In environments where traffic volumes are high and doors are in near-constant use, durability is just as important as fire safety.

AAFD’s metal door frames are fabricated from high-grade steel to meet both structural load demands and daily wear. Whether it’s for healthcare, government, retail, or industrial use, these frames provide the rigid support needed for consistent operation across thousands of open-close cycles.

Built for High-Traffic Environments

• Precision-welded joins for superior strength
• Reinforced to accommodate heavy-duty door closers, locks, and hinges
• Surface treatments that resist corrosion in harsh settings

These frames are not only made to last — they’re made to maintain alignment, resist bowing, and support sealing under pressure. In fire-rated builds, they retain their function even in extreme heat, ensuring doors remain operable as escape or containment points.

The use of steel also allows for more consistent manufacture and tighter tolerances, reducing fit issues during installation. And when combined with AAFD’s in-house detailing and compliance expertise, our customers benefit from frames that are not only compliant but installation-ready from the moment they arrive on site.

Looking to specify frames for your commercial project? Reach out via our Contact Us page to speak with an AAFD technical advisor.

Surface Finishing and Corrosion Protection

While structural strength and fire compliance are critical, the surface treatment of metal door frames plays a vital role in durability and visual appeal. At AAFD, we apply proven surface treatments to enhance the longevity and performance of our frames.

Our frames are thoroughly cleaned and prepped before applying a rust-inhibitive primer, protecting the steel from moisture and oxidation. This is particularly important in high-humidity environments or projects in coastal regions.

Surface Finishing Options:

• Primed Finish – A base-level rust-preventative coating suitable for painting on site.
• Powder Coating – A durable, baked-on finish available in a wide range of colours to match architectural schemes.
• Galvanisation – Where required, frames can be hot-dip galvanised for superior resistance to corrosion, ideal for exposed or harsh environments.

These surface treatments are selected based on the project’s functional and aesthetic requirements. Powder coating, for example, provides not only protection but also a smooth, consistent finish that supports modern design standards.

Regular inspection of coatings and ongoing maintenance further extends the lifespan of metal frames in demanding environments. At AAFD, our production team ensures all finishes meet the specifications outlined by the project and relevant building codes.

Combined with fire safety compliance, the right surface treatment completes the metal door frame’s performance and presentation.

The Value of Choosing AAFD for Metal Door Frames

AAFD’s metal door frames represent more than just a structural necessity — they’re a strategic component in building safety, performance, and long-term value. Whether you’re managing compliance requirements, focusing on occupant safety, or seeking durable performance in high-traffic spaces, metal frames offer a dependable and compliant solution.

Whether you’re an architect, builder, or facility manager, our team is here to support you from specification through to installation. We take pride in delivering compliant, high-performing metal door frames that meet both aesthetic and functional requirements. With expertise in AS1905 compliance, commercial durability, and tailored finishing, AAFD ensures that every project is backed by reliability and craftsmanship.

If you’re planning a project or need guidance around fire door compliance and specifications, we’re here to help. Our team can provide tailored advice, answer your questions, and offer a detailed quote to suit your requirements.

You can review our Fire Doors and Metal Door Frames to explore the full range of products available. Contact us to discuss your requirements or request a detailed quote.