The TRUTH about 3d printed concrete homes

July 9, 2021

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3 min read

3D printed concrete homes are one of the hottest topics on social media right now. Unfortunately, the space is littered with fake news, hyperbole and a lack of critique. So, in this article, we’re going to analyze the claims and look at the advantages and drawbacks of the technology.

1. Built for less than $4,000

One of the false claims surrounding 3D printed homes is the notion that they can be built for less than $4,000. This claim surfaced in 2018, when some journalists misled the public by suggesting that ICON 3D, based in Austin, Texas, had a $10,000 tiny home prototype that could cost as low as $3,500 or $4,000 in large-scale production. However, the owners and marketing team of ICON 3D categorically denied these claims. The actual cost of 3D printed homes is hotly debated due to the newness of the field and the various unknown variables involved.

2. Built in 24 hours

Furthermore, 3D printing does not enable homes to be constructed in 24 hours, as some might suggest. 3D printers create walls, but building a complete home involves numerous other components, such as windows, doors, roofs, electrical wiring, plumbing, insulation, HVAC systems, and interior finishes. The 24-hour timeline also disregards the time required for machine setup, calibration, and dismantling. For instance, printing just the first story of homes in Austin took 5 to 7 days.

3. 3D printing will make job obsolete

Another misleading claim is that 3D printing will make jobs obsolete in the construction industry. While automation and prefabrication technologies hold potential, the complexity of construction projects, with various variables and specialized fields, makes complete automation unlikely in the foreseeable future. 3D printed concrete structures, for example, still require human oversight and involvement in tasks such as machine monitoring, calibration, reinforcement and insulation addition, and framing of door and window openings.

4. Can solve homeslessness

Moreover, the idea that 3D printed homes alone can solve homelessness and housing shortages is an oversimplification. Addressing these issues requires a multifaceted approach that considers socio-economic, psychological, and infrastructural aspects.

5. Sustainable construction method

Regarding sustainability, although 3D printing and prefabrication can reduce waste, broad claims of overall sustainability compared to other construction methods are inaccurate. Concrete, a commonly used material in 3D printing, has significant environmental impacts due to its high water use, contribution to the heat-island effect, and air pollution from limestone quarries and cement factories.

Conclusion

While 3D printing in construction shows promise, it is still in its infancy, and its potential is yet to be fully realized. Responsible coverage and realistic expectations are essential to avoid over-hyping the technology. COBOD and PERI Group, two companies in the industry, have set an example by addressing misconceptions and advocating for responsible reporting.

In conclusion, 3D printed construction has exciting potential, but it must be approached with a clear understanding of its limitations. Rather than trying to fit into niches, the technology should be allowed to develop naturally and evolve into a valuable addition to the construction industry. By managing expectations and embracing critique, we can ensure a more balanced and realistic outlook on this innovative technology.