Ireland has made history by unveiling the world’s first 3D printed social housing development in Dundalk, County Louth. This groundbreaking project consists of a terrace of three 3-bedroom homes located at Grange Close, and it represents a significant leap forward in sustainable construction techniques.
The initiative was a collaborative effort involving Louth County Council, 3D printing specialists Harcourt Technologies (HTL.tech), and building materials provider Roadstone. Utilising an advanced construction printer developed by Danish company Cobod, the team completed the project from initial site preparation to key handover in just 132 days. This remarkable timeframe reflects a 35% reduction in construction time compared to traditional building methods, which typically take around 203 days.
The speed of construction is particularly impressive, with the walls of the houses being printed in only 12 days, including the setup and takedown of the printer. Overall, the entire structure was completed in just 18 days, showcasing the efficiency of 3D printing technology in the building sector.
The design of the social housing project meets the Eurocode 6 masonry standard, ensuring both durability and safety. The walls feature a robust load-bearing system constructed with two 10cm-thick skins and a 150mm cavity in between, eliminating the need for reinforcement or columns. The project utilised approximately 90 cubic metres of C30/37-EN206-compliant concrete, providing a compression strength of 47 MPa, which is crucial for the structural integrity of the homes.
Additionally, the development adheres to the ISO/ASTM 52939:2023 standard for additive manufacturing, a benchmark that Ireland has officially adopted, emphasising the country’s commitment to innovation in construction.
Justin Kinsella, director of HTL.tech, remarked that the Cobod printer has allowed the project to set new industry standards, providing an efficient means to create high-quality, sustainable housing at an accelerated pace. This innovative approach not only addresses the urgent need for affordable housing in Ireland but also paves the way for future projects that can be completed faster and more sustainably.
In recognition of its pioneering efforts, HTL.tech was awarded the Standards Innovation Award by the National Standards Authority of Ireland in October. This accolade highlights the company’s role in advancing construction standards and promoting the use of 3D printing in the housing sector.
The successful completion of the 3D printed social housing project in Dundalk marks a significant milestone for Ireland, demonstrating the potential of cutting-edge technology to revolutionise the construction industry. As the demand for sustainable housing solutions continues to rise, this innovative project serves as a model for future developments, aiming to improve the living conditions for communities while adhering to eco-friendly practices.
As Ireland embraces this innovative technology, it sets an example for other nations exploring 3D printed housing solutions, proving that with the right tools and collaboration, sustainable and affordable housing can become a reality.
