BIO27: Forbidden Vernaculars
Building with Earth Workshop

As part of the 2022 Biennial of design BIO27 - Supervernaculars, production space Krater in collaboration with Atelier Luma (FR) and BC Materials (BE) is organizing a hands-on workshop on the topic of building with earth. In the period of one week 10 international individuals will be selected through an open call to participate in building a tea-pavilion and learn about the regenerative design practices in an abandoned construction pit in the center of Ljubljana.

The building event will include several workshops and talks with a special attention on two different techniques of building with earth: rammed earth (gravel + clay) and building with cob (fibers + clay). All materials will be sourced from the pit itself, showcasing the use of local materials in architecture and design. Participants will get practical experience on how to prepare and treat the materials to build simple structures. With the mentorship of the appraised Atelier Luma, BC Materials and local Krater team, they will get an opportunity to get first-hand insight in contemporary material development and sustainable innovation.

The second part of the workshop will be dedicated to building a wooden construction of a tree-bark roof in collaboration with Hiša Mandrova. It will take place in the beginning of August and is not mandatory for the participants to attend. In September, the pavilion will host public discussions around natural material sourcing, legislation topics and regenerative practices in urban areas. 

The workshop is suited for all interested creatives, architects, designers and builders who want to get a direct experience of building with earth and share their own insights and know-how. We also encourage the residents of bordering countries of Austria, Italy, Hungary and Croatia to apply and broaden the specter of local materials found in Slovenia.

Workshops & Talks

  • Building with cob

  • Rammed earth 

  • Tree bark roof 

  • Lime plaster finish 

  • Terrazzo 

  • and many more

Apply until 5.6. at this link!

For all additional questions, please write to

Important Dates

13.5. - 5.6. Open call 

8.6. - 10.6. Participant selections

20.6. - 24.6. Building Workshop I: rammed earth + cob

1.8. - 5.8. Building Workshop II: wooden roof (optional)

5.9. - 30.9. Forbidden Vernacular Tea Ceremonies