Steel Frames and Trusses

Welded Steel Frames and Trusses

At TransbuildNQ we provide a range of steel framing services including:

  • Locally produced quality Bluescope Truecore steel
  • Design and engineering reviewed for suitability for all client supplied plans
  • Truss and wall frame for residential housing
  • Commercial construction
  • Load bearing wall frames
  • 75mm x  1.0mm BMT Steel Framing

Supply Only, includes engineering and Form 15

  • External and internal wall and roof framing
  • Load bearing wall framing
  • Flat packed for freight to remote areas
  • All frames are designed to C2 wind classification, as standard
  • Blue scope Truecore steel
  • Steel frame Design Drawings
  • Manufactured locally in our Townsville Factory
  • Quality Australian products
  • Fast turn around

WHy Build With Steel?

Termite Proof

Termite proof Steel is not damaged by termites or borers. The National Construction Code of Australia (NCC) says that steel used as a “primary building element” (i.e. as a structural component) is a “termite resistant material” and there are no mandatory termite treatments or inspections required by the NCC for the building.

Rot and Mould Proof

Steel framing is also not subject to rot and mould, which can present an increasing risk as building envelopes are more effectively sealed to increase comfort and energy efficiency. Lightweight, strong and delivered pre-cut or prefabricated to building sites, steel has the potential to deliver numerous sustainability benefits which can contribute to reduced site disturbance, reduced onsite waste, re-use of existing structures and more cost-effective buildings.

Energy Efficient

BlueScope’s steel products can be used in greener building designs to improve energy efficiency and thermal comfort, and reduce energy and water demand. This makes it easier for homeowners and developers to meet mandatory sustainability requirements or accrue credits under voluntary green building ratings systems. Any reduction in energy usage delivers economic and environmental benefits such as reduced energy bills, less pressure on energy infrastructure and lower greenhouse gas emissions.

Pest Proof

Using steel framing provides the confidence that the building will stand for many years to come without the need for additional chemical treatments to protect the steel frame from pest attack. Ongoing pest treatments are not required to safeguard steel framing nor are any such treatments required during construction on site for each exposed cut and drilled surface.

Fire Proof

Steel frames made from BlueScope’s TRUECORE® steel offers the following features and sustainability benefits Non-combustible Steel does not burn; therefore steel framing will neither sustain nor contribute to the spread of a fire.House frames made from TRUECORE® steel are non-combustible and therefore ideal for bushfire prone areas –suitable for construction in all of the Bushfire Attack Levels as identified in the National Construction Code.


If you’re new to light gauge steel frames you might be surprised just how easy frames made from TRUECORE® steel are to work with. We’ve put together a range of how-to videos to help you get up to speed fast, you can view them on the Installers page of this website. Also, The National Association of Steel-Framed Housing (NASH) provides instructional literature and videos and your frame supplier is also likely to provide installation manuals and support.

Yes, steel framing has been successfully used in the housing industry since the 1950s. Specific advice is available from window and cladding manufacturers.

BlueScope Steel manufactures TRUECORE® steel to all the relevant Australian Standards (AS1397:2011 and AS/NZS 1365:1996) for thickness, width, mechanical properties and coating mass.  TRUECORE® steel is easily identifiable through product branding and the distinctive blue coating.

Because it’s termite and borer proof, TRUECORE® steel doesn’t need to be treated with insecticides to keep these harmful pests from eating your frame. So, if minimising insecticides around your home is a priority for you and your family, building your home with TRUECORE®steel is a great way to start.

The National Construction Code specifies chemical and physical termite barriers only where structural members are subject to termite attack. A steel frame is termite proof, but it is still recommended to use non-structural fixtures of termite-resistant materials, or a steel frame plus a termite barrier, combined with regular pest inspections. For further information visit the National Association for Steel-Frame Housing’s (NASH) information page:

There will be no initial shrinkage or swelling of a frame made from TRUECORE® steel as there is no absorption or drying of moisture in steel frames.  Steel framing in a properly constructed and insulated home expands and contracts in response to temperature changes at rates reasonably similar to those of other building materials.  And steel frames won’t shrink, twist or warp over time so there’s less chance of sticking doors and window jambs, nail pops and wavy roof lines due to frame movement.

A frame made from TRUECORE® steel can be lined, insulated and clad in a variety of ways which can deliver the desired thermal and acoustic properties.

Frequently Asked Questions

Steel frames are precision engineered, dimensionally accurate, straight and true (there is no need for frame straightening), and they arrive to site pre-fabricated and ready for installation. Builders and tradies have told us they appreciate the lightweight nature of steel. And arriving to site pre-fabricated can improve on-site efficiency and help to reduce on-site waste.

Because they arrive to site pre-fabricated, frames made from TRUECORE® steel are ready to be installed straight away. Some builders have suggested there are time savings compared to some other building materials.  We recommend you speak to your builder for an estimate of the build time for your specific project.

Steel is inherently strong and TRUECORE® steel meets the requirements of all relevant Australian Standards. Most modern systems use high tensile steel components and appropriate jointing methods, and are engineered to meet the relevant structural requirements of the National Construction Code.

TRUECORE® steel is made by BlueScope to strict tolerances and fully complies with all relevant Australian Standards.  Light gauge steel framing is a precision engineered product manufactured to accurate dimensions and this helps to ensure walls are straight and true.  Steel frames don’t shrink, twist or warp over time which may help reduce builder call-backs and ongoing maintenance issues.

TRUECORE® steel is backed by a reassuring 50-year warranty from BlueScope.  The warranty is offered to eligible applicants for residential applications and is subject to terms and conditions.  For full terms and conditions and to determine eligibility please visit or call BlueScope on 1800 800 789. In addition, consumers have rights under Australian Consumer Law which cannot be excluded, modified or restricted and the warranties offered by BlueScope do not affect those rights.

Steel framing has been successfully used in housing since the early 1950’s and in recent years has gained in popularity. There are well-known and reputable builders in Australia who recognise the benefits of TRUECORE® steel and building steel framed houses.

Frames made from TRUECORE® steel are 100% termite and borer proof.  As anyone who’s had to deal with termites would probably tell you, it’s worth doing everything you can to stop them, right from the start. Termites are a problem in Australia and damage to a house frame by termites and borers can be silent and invisible to the eye. Rectification may involve replacement of the damaged frame and other building components and the damage may not be covered in standard insurance policies.  Regular termite inspections are recommended to check the other building components in homes.

Yes. When used as part of the NASH bushfire standard, frames made from TRUECORE® steel provide simple design solutions to achieve compliance when building, even in a flame zone. For further information please refer to the National Association of Steel-Framed Housing’s Standard ‘Steel Frames Construction in Bushfire Areas’ or visit We also recommend you speak with your builder about the suitability of steel framing for your build.

Steel frame manufacturers and fabricators can produce almost any one or two storey home design seen in Australia today and recently steel frames have been used in some three and four storey designs. Because house frames made from TRUECORE® steel have a high strength-to-weight ratio and stay straight and true, they’re an ideal choice for modern home design. Long spans, open plan living spaces, architectural rooflines; they’re all possible with the inner strength of TRUECORE® steel. And frames made from TRUECORE® steel are suitable for both flat and sloping blocks.

Any trade can work with steel framing. Bricklayers can install the brick ties by simply clipping them into the stud and plasterers appreciate the straight lines of a frame made from TRUECORE® steel. Pre-punched electrical and plumbing service holes help make installation easier for plumbers and electricians. Most frames are installed by qualified framers who can work with both steel and timber. Trades are increasingly becoming experienced with working with steel as more builders adopt steel framing in their product offer.

Yes, steel framing can be fixed directly to a concrete slab, or to steel flooring systems on brick, concrete, or steel piers.

Yes, these materials should be isolated because in the presence of water these materials will develop galvanic cells which will result in rapid destruction of the protective metal coating of the steel frame. Copper pipes are easily isolated from the frame by using nylon grommets or face fixed to the studs using plastic clips. Both systems also resist water hammer noise.

Compared to double-brick construction, floorspace gains can be achieved when using frames made from TRUECORE® steel combined with external cladding construction. Over a typical home design (slab area = 221m2) this may equate to three square metres which could mean more living space or additional storage.

Yes, steel frames can accommodate a range of facades including brick, veneer, fibre cement and timber. Cladding solutions can be fixed directly to steel framing.

Yes, it is. TRUECORE® steel with Activate® technology incorporates a thoroughly tested protective aluminium/zinc/magnesium alloy coating. Our patented Activate® coating technology is an important component of BlueScope products installed across a range of environments and building applications. Where there are cut edges from drilling or cutting operations, the galvanic action of the coating protects the exposed steel edge against corrosion.