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Decentralised production model supports regional delivery and modular construction rollout.
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Perth-based Sipform is extending its Structural Insulated Panel (SIP) manufacturing footprint across Australia, aligning product development with a broader shift towards modular construction and distributed manufacturing. With operations in Western Australia and New South Wales, and additional capacity in development, the company is positioning its panelised system within a national rollout strategy that combines offsite production with regional delivery. (main image: A first-floor extension nearing completion in Cottesloe, Perth, delivered using Sipform’s SIP system to reduce construction time and simplify on-site assembly.)
Founded on the premise that housing delivery must move beyond fragmented site-based processes, Sipform manufactures composite SIP panels that integrate structure and insulation into a single element. Each panel consists of an expanded polystyrene (EPS) core bonded to internal and external facings, forming a lightweight but rigid building component. Produced in controlled factory environments, the panels are delivered to site as a kit-of-parts system, replacing multiple traditional trades including framing, insulation, wrapping and internal linings.
While SIP systems have been used extensively across Europe and North America, Sipform has adapted the model for Australian conditions, incorporating local materials and offering a range of internal and external finishes. The system is designed to deliver a continuous, airtight building envelope with reduced thermal bridging and improved acoustic performance.
Manufacturing footprint supports decentralised delivery model
Sipform’s manufacturing activity is currently anchored in Western Australia and New South Wales. Its WA base in Malaga supports operations across Perth and surrounding regions, while its east coast manufacturing capability is centred in Murwillumbah in northern New South Wales.
The company is continuing to expand its production capacity, with new facilities and upgrades underway as part of a broader national strategy.
“We have a factory in Perth and have established a facility in New South Wales,” said Brian Chandler, Director of Growth at Sipform. “We’re now moving into a new, larger factory in Perth.”
That expansion is not being approached through a single centralised facility. Instead, Sipform is pursuing a distributed production model designed to reflect Australia’s geographic and logistical realities.
“Mega-factories don’t necessarily work in Australia. The transport distances are significant, and so are the costs and environmental impacts associated with moving materials long distances,” Chandler said.
The approach combines a centralised design hub with decentralised manufacturing, where smaller, strategically located facilities operate closer to end users. This reduces transport requirements, supports regional employment, and enables scalable production aligned with local demand.
Productivity shift from construction to manufacturing
Sipform’s manufacturing strategy is tied directly to how it frames the broader housing challenge. Rather than focusing solely on supply constraints, the company positions productivity as the underlying issue.
“From where I stand, the fundamental constraint is not simply labour, materials, or approvals. It is productivity,” Chandler said. “We must treat building delivery as both a construction challenge and a manufacturing challenge.”
That perspective is reflected in how SIPs are deployed on site. By delivering panels with integrated insulation and linings, the system reduces the number of trades required after installation and simplifies sequencing.
“With very little training, builders can use semi-skilled workers to install the entire building envelope. That reduces labour costs, shortens construction timeframes, and allows skilled trades to be deployed more efficiently,” Chandler said.
The impact is most visible in build speed. Once panels are installed, the structure, insulation and internal linings are already in place, reducing the need for follow-on trades and compressing time to lock-up.
For builders operating within fixed labour constraints, that reduction in cycle time directly influences how many homes can be delivered each year.
UTS collaboration examines scalable manufacturing systems
Sipform is working with the University of Technology Sydney through the RACE for 2030 Cooperative Research Centre on a project focused on scaling SIP production while improving energy performance and reducing emissions.
Led by Chief Investigator Andrea Trianni, the project examines factory layout, material flow, automation pathways and digital production systems. Proposed changes are tested through simulation modelling before implementation, reducing risk as production scales.
“This is not a marginal improvement. It is a shift from site variability to controlled production,” Chandler said.
A key component of the work is identifying production bottlenecks and improving flow across manufacturing stages.
“If one part of the process is operating at full capacity, it constrains everything else, even if other parts are underutilised. It’s about identifying those bottlenecks and creating a clear flow through the system,” Chandler said.
The project also incorporates Life Cycle Assessment to quantify carbon performance and operational energy savings, providing verified data to support adoption across the housing sector.
Interior spaces within a Sipform SIP-built home, illustrating open-plan layouts, natural light, and consistent thermal performance enabled by panelised construction.
Thermal performance drives lifecycle efficiency
Thermal performance sits at the centre of Sipform’s system. By integrating continuous insulation within the structural panel, the building envelope becomes the primary driver of energy efficiency.
The project framework identifies potential reductions of approximately 50 to 70 per cent in heating and cooling demand compared with conventional construction, depending on design and climate conditions.
“The building envelope is the most durable lever we have for reducing operational energy demand. When the fabric performs, the home performs,” Chandler said.
For homeowners, this translates into lower energy costs and improved comfort. For developers and housing providers, it supports more predictable building performance and reduced lifecycle costs.
Positioning SIPs within Australia’s modular construction landscape
Sipform’s expansion across Perth and the east coast, together with its UTS collaboration, is directed at resolving practical constraints in housing delivery. This includes improving factory efficiency, reducing reliance on skilled labour on site, and validating the performance of SIP-based construction.
“Productivity gains are not a technical improvement, they are a system-level necessity,” Chandler said.
Through its decentralised manufacturing model and panelised system, Sipform is applying SIPs to improve production consistency, reduce on-site labour requirements, and deliver more predictable building performance.
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