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Spanline Steel Floor Systems: The ultimate cost-effective flooring solution for strength and durability


  • Any space requiring a floor and deck
  • Commercial mezzanine or raised platform
  • Granny flats and tiny houses
  • Sloping sites, bushfire areas, flood zones


Durable: Non-combustible, resistant to rot, twisting, and shrinking, with a termite-proof Aluzinc coating inside and out. The strength of the rolled steel allows for greater spans and reduces the impact on site works and sediment control issues.

Cost-effective: Lightweight; easy to carry and simple to install; off-the-shelf standard brackets and componentry.

Efficient Construction: Longer joist spans and bearer spans result in fewer footings and posts, less concrete, quicker construction, and overall cost savings.

Transform your residential or commercial space with our versatile, termite-resistant, fire-tested flooring system.

Experience the perfect blend of strength, durability, and simplicity with Spanline’s steel subframe flooring system.

Designed for both residential and commercial applications, our system is versatile and customisable, meeting the unique needs of your project with ease. Whether you’re building a residential or commercial property, our solution is ideal for mezzanine levels, raised platforms, decks and flooring.

Crafted with robust steel, Spanline’s subframe flooring system is immune to termite damage, ensuring long-lasting durability. Spanline steel has been fully tested and meets national accreditation standards for fire resistance under AS1530.

Looking for a deck builder? Click here to view our decks built for the Australian lifestyle.

Builder’s best bet

No need to wait for your product to arrive on-site before you can start measuring, marking, and cutting bearers and joists. With Spanline Flooring Systems, your subfloor comes with joist and bracket details, all ready for assembly. This eliminates the risk of measurement errors and misalignments that could compromise the integrity of your flooring system.

It’s all about making your construction process faster and more cost-efficient. Thanks to our state-of-the-art CAD technology and automated manufacturing processes, your floor is designed to your exact specifications and delivered as a complete kit.

With Spanline Flooring Systems, you’re not just getting a product, you’re investing in a solution that’s designed to meet your needs, save you time, and provide you with a reliable, durable, and elegant flooring system.

From the design process with Jason to the build with Steve and Isaiah everything has been fantastic. Quality is fabulous, so pleased we have enclosed our patio, making a glass room. 100% recommend Spanline.
Jenny Anikin
Jenny Anikin
I have referred Spanline Australia for many of my Clients in Sydney, who are in need of a quality crafted carport, patio or alfresco area, and we have received overwhelmingly positive feedback. From start to finish, their team was professional, efficient, and highly skilled. The quality of their workmanship exceeded my expectations, and the final result truly enhances the appearance and functionality of my client’s homes. I highly recommend Spanline to anyone in need of outdoor living or improved home utility. They deliver top-notch service and outstanding results.
Nikki Quittner
Nikki Quittner
Extremely happy with completed roof we had Spanline Port Stephens erect over our external deck area. Their professionalism and attention to detail throughout our product selection / build process was amazing and we have received a great deal of positive feedback from our family and friends about the quality of the product and workmanship. Many thanks to Steve and Simone.
We have used Spanline for two renovations recently and couldn't be happier with the process, from Seb Godfrey coming out to measure and quote, to material selection and the build process.Where possible they sought to re-use existing materials and structures, offering different materials and options to really try and meet our budget and still get an amazing result.The workmanship is amazing and especially in the instance of our back deck it just linked the house and our yard together in a way our previous mod-wood deck (which was only two years old and had collapsed) simply could not.I cannot recommend Spanline highly enough. The initial quote may seem expensive but I can't reiterate the work quality, the dedication of the staff and the end product is absolutely worth it and I wish I had done it in the first place. I'm looking forward to working with them again in future for other renovations I'm planning.
Robert Barr
Robert Barr
I am extremely happy with my recent patio. The whole process was professional and a pleasure dealing with the whole spanline teamVery happy
Spanline recently installed an enclosed glass room on our back deck. They done an awesome job. From start to finish we found this company very professional to deal with. We are very happy with our new space. Great people. Will definitely use again.
mark gould
mark gould
Spanline PMQ ,recently installed a patio for me , everything was well planned , documented and executed . Jamie was good , and very helpful along with Jack ,( installer ) much thanks and appreciation , this has really improved my home 👍Brian
brian pearson
brian pearson
I had a patio installed recently, very happy with the result, very happy with the installer Shane who was professional and friendly. Jamiecame out and did the quote, he was very knowledgeable about the products available, very professional as well.Overall I have no complaints at all, cant wait to make more use of the extended outdoor area I now have.Thankyou Spanline.
Michelle Martin
Michelle Martin
Good team to deal with & attended to any issues along the way! Beginning with Seb doing the upfront design & quote to all the different trade staff completing new patio, guttering, fascia, retaining wall, lighting & concreting! Very happy with the final result! Thanks to all involved.
Heather Drew
Heather Drew
Amazing job by Spanline!! Constant consultation during the build of our deck roof, and with the organising of electrical work to light switches and installation of ceiling fan. We now enjoy entertaining on the covered deck enjoying the sunset and the view to the escarpment
Thanks to everyone involved in our project,a great job.Special mention to Rob who constructed our patio on is own with attention to detail.Loving the new door & screen,I would have no hesitation recommending Spanline Home Additions Southside
David Wilson
David Wilson
A verandah was recently added to my home by spanline wagga. Great service by all in particular Adam who was especially precise with the building worksVery pleased with the result and workmanshipMany thanks Adam, Terrell and Craig
Judith Langton
Judith Langton

Spanline Flooring Systems features

  • Made from high-strength Aluzinc steel: Ensures durability and longevity.
  • Adjustable design: Allows for customisation based on specific project requirements.
  • Lightweight construction: Facilitates easy handling and installation.
  • Resistant to termites: Eliminates the risk of termite damage.
  • Fire-resistant: Enhances safety in case of fire incidents.
  • Corrosion-resistant: Increases the lifespan of the flooring system.
  • Compatible with various flooring materials: Offers versatility in design and aesthetics.
  • Engineered in Australia for Australian conditions and for load-bearing capacity up to 500kgs/m2: Ensures structural integrity and safety.
  • Available in various sizes:  Cut to length so there is no wastage. Can accommodate different project scales.

Spanline Flooring Systems benefits

  • Long-lasting: The high-strength steel ensures the flooring system will last for many years.
  • Customisable: The adjustable design allows for a perfect fit, regardless of the project’s specifics.
  • Easy to install: The lightweight construction means less manpower is needed for installation.
  • Lower maintenance costs: The resistance to termites, fire, and corrosion reduces the need for repairs and replacements.
  • Versatile: The compatibility with various flooring materials allows for a wide range of design options.
  • Safe: The engineered load-bearing capacity ensures the flooring system can safely support the intended loads.
  • Suitable for various project scales: The availability in various sizes means it can be used for small to large projects.

The science of Roll Form Beams

Local Spanline Franchises produce Roll Form Beams at their manufacturing facilities. The beams are manufactured in a range of sizes and rolled to length to accommodate different size spans and floor construction weights.


What makes roll form beams the perfect solution for durable flooring:

  1. Production Process: Roll form beams are produced by gradually bending a flat sheet of metal into the desired shape. The beams are typically very consistent in shape and size – important for applications that require precision. Roll forming is a highly efficient process that produces beams at a high speed, making it a cost-effective solution.
  2. High Strength: Roll forming can produce beams with high strength-to-weight ratios, making them ideal for supporting heavy loads in flooring systems. The Spanline Flooring System subfloor will take up to 500kgs/m2.
  3. Durability: Roll formed beams, especially those made from steel, are highly durable and resistant to various environmental factors such as moisture, termites, and fire. Your subfloor will withstand even the most extreme weather conditions without warping or cracking.
  4. Versatility: Roll forming can be used to produce a wide variety of beam shapes and sizes making it ideal for both residential and commercial purposes. This includes standard shapes like I-beams and C-channels, as well as custom profiles.

Let Spanline help

For over 38 years, we have been at the forefront of the home improvement industry, leading the way in providing innovative and top-notch solutions to Australian homeowners. Our unwavering commitment to delivering high-quality results is something we take great pride in.

Our licensed builders will organise everything from onsite inspections, custom designs and council plans, 3D rendering of your project, through to council approvals^.

Our warranty

Spanline Australia and all Spanline Home Additions franchise owners are completely committed to our national Customer Service Code of Excellence and we are as confident in our product as we are in our service.

That’s why, for your peace of mind, we back our product with a nationally registered 15-year structural warranty.*

Spanline has been changing the way Australians play for over 30 years, with an unwavering commitment to quality, integrity and service so you can rest assured you will get the best possible result.

Our qualifications

At Spanline, we hold valid builder’s licences and ensure that every person working on your project has their trade certificates.

Our Design Advisors undergo continuous professional development in technical and design education, as well as customer support training, to provide you with the best possible service.

We take pride in our commitment to quality and expertise in the industry.

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