Steel Frames
A detailed guide for homeowners and custom home builders considering steel framing across metropolitan and regional Victoria.
Steel framing has moved from a niche option to a mainstream choice for new homes across Victoria because it is termite proof, non combustible, dimensionally stable and fast to erect. With most of Australia rated moderate to high risk for termites and much of regional Victoria subject to bushfire attack levels, those qualities translate into real protection and simpler compliance. This guide covers the benefits, the termite and bushfire facts behind them, the standards your home must meet, and the residential projects we have delivered across the state.
Victoria is building. The state has committed to 800,000 new homes over ten years, coordinated through Homes Victoria, with strong population growth and tight supply keeping pressure on the market. For owners building a new home, the goal is not just to build, but to build something durable, low maintenance and safe that holds its value for decades. The structural frame sits underneath all of that, and it is where many owners are now choosing steel.
Termites are a real and costly risk across most of Australia. CSIRO research has found that roughly one in three Australian homes is affected by termites at some point, with industry estimates of between about 130,000 and 180,000 homes damaged each year and an average repair bill in the thousands. The only part of mainland Australia rated low to very low risk by the CSIRO is a narrow strip along the Great Ocean Road west of Melbourne, which leaves most of Victoria in the moderate to high range. Crucially, most home insurance policies do not cover termite damage, so the cost falls on the owner.
A steel frame is not a food source for termites or borers and does not rot, which removes the structural frame from the termite equation. Slab edge protection is still needed to protect other susceptible elements such as skirtings and architraves, but taking the frame out of harm’s way gives owners genuine long term peace of mind and removes the chemical soil treatments that timber framing relies on.
Steel is non combustible, so the frame itself does not ignite, fuel or spread fire. In bushfire prone parts of regional Victoria where a Bushfire Attack Level applies under AS 3959, a non combustible frame is a strong starting point for compliance and can make council approval smoother, since steel can be engineered to meet ratings from BAL-LOW through to the most severe BAL-FZ. The full design must still address the relevant BAL, including cladding, windows and decks, but the frame is one less combustible element to manage.
Steel does not shrink, warp, twist or absorb moisture, so walls stay straight and openings stay square long after the build. That dimensional stability shows up as fewer cracks in cornices and plaster, doors and windows that keep operating smoothly, and far fewer movement related defects over time, which is exactly what owners notice in the years after moving in.
Steel’s high strength to weight ratio supports larger clear spans and open plan living without crowding the home with columns and walls. It also handles sloping and difficult sites well, where its light weight and precision can simplify the structure. Paired with lightweight steel roof trusses and steel floor joists, it gives designers real freedom across single and double storey homes.
Frames are manufactured to precise dimensions and arrive ready to assemble, which speeds up the framing stage, reduces on site waste and gives a cleaner, more predictable build. For an owner, that often means a tighter timeline and fewer surprises through the framing phase, when delays are most expensive.
A common question about steel homes is heat transfer and condensation. Modern steel framed homes are designed with insulation and thermal breaks that manage these issues in line with the energy efficiency provisions of the National Construction Code, so a well detailed steel home is comfortable year round. The key is correct design and detailing, which a competent supplier and builder will handle as standard.
Risk | What the research shows | How steel helps |
Termites | Around one in three Australian homes affected at some point; roughly 130,000 to 180,000 homes damaged a year; insurance generally does not cover it | Steel is not a termite food source, removing the frame from the risk |
Bushfire | Much of regional Victoria is subject to a Bushfire Attack Level under AS 3959 | Steel is non combustible and can be engineered from BAL-LOW to BAL-FZ |
Movement and rot | Timber can shrink, warp and absorb moisture over time | Steel is dimensionally stable and does not rot, keeping walls straight |
Source: CSIRO termite research as reported by termite damage statistics, and AS 3959 bushfire construction provisions. Figures vary between studies and are indicative.
Standard | What it covers |
AS/NZS 4600:2018 | Cold formed steel structures, the core design standard for light gauge steel framing |
NASH Standard | Residential and Low-Rise Steel Framing, recognised by the NCC for design, bracing and tie down |
AS 1684 (comparison) | The equivalent residential framing standard for timber, useful when comparing systems |
AS 3959 | Construction in bushfire prone areas, setting the BAL requirements in regional Victoria |
AS 1170 series | Structural design actions, the loads engineers design the frame to resist |
AS 1397 | The coated steel sheet standard governing the base material, including TRUECORE steel |
Source: National Construction Code compliance pathways, AS/NZS 4600:2018 and the NASH Standard for Residential and Low-Rise Steel Framing.
We build using Australian made TRUECORE steel, a BlueScope product manufactured to AS 1397 and backed by a manufacturer warranty, giving owners long term confidence in the structure.
From the bayside Mornington Peninsula to the eastern suburbs and regional Victoria, CMC Steel Solutions has supplied and installed residential steel framing on a wide range of homes, each involving supply and installation of the structural and light gauge steel framework. Full galleries are on our projects page.
Project | Scope |
Steel framing for a home on the Mornington Peninsula | |
Steel framing for a regional Victorian home | |
Steel framing for a home in the south east growth corridor | |
Steel framing for a home in Melbourne’s east | |
Steel framing for a regional Victorian residence | |
Steel framing for a home in the Dandenong Ranges | |
Structural and light gauge steel framing for a home in Melbourne’s south east | |
Steel framing for a home in Melbourne’s south east |
Source: CMC Steel Solutions project records and project pages, linked above.
This spread of locations, from the Peninsula to the Dandenong Ranges and the growth corridors, shows the reach of our residential steel frame service across Victoria.
Framing is one line in a home build, but it influences several others. Steel’s speed and precision can shorten the program and reduce waste, while its termite immunity and durability lower long term maintenance and remove chemical treatment costs around the frame. Owners should weigh that against correct engineering and thermal detailing, which steel needs to perform well. The fair comparison is total cost and risk across the life of the home, not the framing line on day one, and the most reliable figure for your block and design comes from a project quote.
Steel offers termite resistance, dimensional stability, a non combustible structure and low maintenance, while timber has its own strengths. The best choice depends on the site, design and budget, but steel performs strongly on durability and long term stability. Both must meet the National Construction Code.
Steel is not a food source for termites, so the frame itself is not at risk. This matters in Victoria, where most of the state is rated moderate to high termite risk and home insurance generally does not cover termite damage. Slab edge protection is still used to protect other susceptible elements such as skirtings and architraves.
Yes. Steel is non combustible, so the frame does not fuel or spread fire, and it can be engineered to meet Bushfire Attack Levels from BAL-LOW to BAL-FZ under AS 3959. The full design must still address the relevant BAL across cladding, windows and other elements.
Modern steel framed homes are designed with insulation and thermal breaks that manage heat transfer and condensation in line with the energy provisions of the National Construction Code, so a well detailed steel home is comfortable year round.
Yes. Steel is light and precise, which can simplify the structure on sloping and difficult blocks, and its strength supports the larger spans often needed on these sites.
It is engineered to AS/NZS 4600:2018, the cold formed steel structures standard, and the NASH Standard for Residential and Low-Rise Steel Framing, both recognised by the National Construction Code, with bushfire areas designed to AS 3959. The base material is coated steel made to AS 1397, such as TRUECORE steel.
We supply and install residential steel framing across metropolitan Melbourne and regional Victoria, including completed homes in Mt Martha, Avenel, Clyde, Ferntree Gully, Langdons Hill, Monbulk, Mt Waverley and Pakenham.
If you are building a new home anywhere across Melbourne or Victoria, our team can frame it straight, strong and termite free. We supply and install residential steel framing built with Australian TRUECORE steel, engineered to AS/NZS 4600 and the NASH Standard and backed by homes delivered right across the state.
Call us on 1300 285 566, email info@cmcsteelsolutions.com.au, or request a free quote to discuss your project.
Are you looking for steel framing solutions? We at CMC Steel Solutions offer wide range of products for construction projects.
Connect with our team at 1300 285 566 or email us your doubts on info@cmcsteelsolutions.com.au for better response.
