KampC: First two story building printed on site in Europe with BOD2

• First two-story 3D-printed building
• 90 sqm printed on-site
• 3x stronger than brick

Kamp C is a sustainable building and circular economy organization based in Westerlo, in the Flanders region of Belgium, and it wanted to demonstrate that large-scale 3D concrete printing was a viable, faster way to build real, livable homes rather than just a prototype technology.

Kamp C chose COBOD's BOD2 gantry printer because, unlike many earlier 3D-printed projects that only produced a single-story structure or printed components off-site in a factory for later assembly, the BOD2 could print an entire two-story building envelope on-site as one continuous piece.

That let Kamp C's team demonstrate a genuinely new construction workflow rather than simply reproducing traditional building methods with a printer.

As an organization focused on sustainable and innovative building methods, Kamp C wanted to prove that concrete 3D printing could go beyond small, single-story demonstration structures and actually produce a full, livable two-story home.

No one in Europe had printed a complete two-story building envelope on-site in a single piece before, so Kamp C had to work with an unproven process at this scale, including how a fixed gantry printer would handle the height, floor separation, and structural requirements of a second story.

The project also needed to prove the printed walls could meet real performance standards, including strength, thermal efficiency, and the elimination of cold bridging, rather than being purely a technology showcase.

Before this project, Kamp C and the broader construction industry in Flanders relied on conventional masonry and precast methods to build homes, laying brick by brick or assembling factory-made concrete panels on-site by hand.

Even projects that experimented with 3D concrete printing typically printed only single-story structures, or printed wall components off-site in a factory before trucking them in for on-site assembly, similar to traditional prefabricated construction.

That meant construction crews still spent significant time on manual bricklaying, mortar work, and correcting thermal bridging where different building elements met, all of which added labor time and left more room for inconsistencies in the finished walls.

With COBOD's BOD2 printer, Kamp C printed the entire two-story, 90-square-meter building envelope on-site as a single continuous structure, rather than assembling it from separately printed or prefabricated pieces.

According to Kamp C, the printed walls achieved roughly three times the compressive strength of standard quick brick, while the continuous printing process eliminated the thermal and cold bridging that typically forms where separate building components meet, reducing the risk of condensation.

Beyond the technical performance, the project proved that large-scale concrete 3D printing could move past single-story demonstrations to deliver a genuinely livable, multi-story home, giving Kamp C and the wider Flanders construction industry a validated, faster alternative to conventional bricklaying and precast assembly for future projects.