Nextgen Steel Frames
Steel Floor Joists Built for Strong Mid-Floors
Need steel floor joists in Melbourne? We supply engineered joists that deliver strong floor support, accurate fit, and smoother installation for modern builds.
Get a Quote Today
Australian Standards Certified
Custom Engineered Frames
Faster Installation Systems
Who We Are
We Supply Floor Joists Made to Measure
Nextgen Steel Frames produces floor joists using high-quality light gauge steel for projects across Melbourne. Our joists are built to match your floor plan and span requirements, helping keep floors level, stable, and easier to install on site.
We manufacture steel flooring joists that are straight, consistent, and designed to reduce common issues seen with timber such as twisting, shrinkage, and movement. Builders choose our joists because they’re reliable, easy to work with, and delivered ready for faster floor framing.
Our Process
A Simple Process for Steel Floor Joists
Design & Consultation
We check your drawings and confirm floor layout, spans, loads, and support points before detailing begins.
Engineering & Detailing
Our team prepares certified details, layouts, and 3D plans so everything is accurate and ready for production.
Manufacturing Quality
Joists are manufactured in a controlled environment for consistent strength and clean fit-up across the floor structure.
Delivery & Installation Support
We deliver across Melbourne with clear labelling and documentation, with optional on site installation support if needed.
Let’s Get Your Project Moving
Get a complete steel floor joist solution from design to installation.
Projects We’re Proud Of
Frequently Asked Questions About Our Products
What do steel floor joists actually do?
Steel floor joists support the floor structure by carrying loads across spans and transferring weight to walls and beams. They help create a stronger floor and reduce movement, giving a more solid feel underfoot.
What are POSI joists, and why do builders use them?
POSI joists are engineered steel joists with an open-web design that provides strength while leaving space for services. On site, many builders call these POSIs, as it’s a common Australian term.
What does Posi-Strut mean in floor framing?
A posi strut floor system uses steel joists designed for long spans and easy service runs. It’s a practical choice for double-storey homes because it reduces the need for cutting and drilling during installation.
Do you supply strutting and stiffening parts as well?
Yes. Where the design requires it, we supply steel strut components and connection hardware to help keep joists stable and performing correctly under load.
Can you supply steel floor joists for houses and townhouses?
Yes. We supply residential steel floor joist packages to suit single homes, townhouse developments, and renovations where strong floor support is required.
Do you provide joists for commercial floors?
Yes. We supply commercial steel floor joist systems for offices, shop builds, and other commercial spaces where consistent load performance is required.
What about heavier-duty industrial floors?
Yes. We can provide industrial steel floor joist solutions for workshops and industrial buildings, tailored to suit higher load requirements and site conditions.
Are your joists engineered and compliant?
Yes. Our joist packages can include certification and documentation, prepared to meet Australian compliance and installation requirements.
How do I get pricing for floor joists?
Send through your plans, and we’ll review spans, layout, support points, and floor loads. We then provide pricing, lead times, and delivery or install options.
Will the joists arrive labelled for installation?
Yes. Joists are delivered with clear labelling and supporting information, making it easier for installers to set out and frame the floor quickly.
Updates
Latest Blogs
Building a new home or planning a major renovation is exciting, but let’s be honest, it can also be incredibly overwhelming. You are bombarded with choices from the moment you sign the contract. From floor coverings to tapware, every decision feels critical. But the most important choice you will make happens before the slab is […]
People want buildings to go up faster, be smarter, and use materials that are better for the environment, so the construction industry is moving quickly. Steel roof trusses and frames are leading the way in this change because they are strong, dependable, and energy-efficient. As 2026 gets closer, steel buildings are becoming the standard choice […]
In any building, floor joists are very important because they support the floors and let people safely move things to the floor below. The strength, durability, and performance of your floor joist system will depend on how well you choose it. Steel floor joists are becoming more common in homes and businesses because they are […]
Reviews
What Our Clients Have to Say
Ready to Start Your Project?
Get expert advice and a complete steel framing solution, from design to installation.