Portugal Cob Workshop: 10 Days Intensive | Grândola 2026
TL;DR: Learn hands-on earthen building skills, focusing on cob and adobe construction for ovens and heaters, through an intensive workshop.
- Master cob and adobe techniques.
- Build a cob oven and adobe mass heater.
- Perform soil analysis and stabilization.
- Learn material sourcing and mixture ratios.
- Understand earthen building principles.
Why it matters: Earthen building offers sustainable construction methods, reducing environmental impact and utilizing local resources for durable, energy-efficient structures.
Do this next: Research local availability and regulations for cob and adobe building materials in your area.
Recommended for: Aspiring natural builders and permaculture practitioners seeking practical skills in earthen construction techniques.
This 10-day intensive workshop in Grândola, Portugal, from May 1st to 10th, 2026, offers a certified theoretical and hands-on experience in earthen building techniques, focusing on cob and adobe. Participants will construct a complete cob oven with a built-in grill and working table, as well as a full adobe mass heater within an ongoing Earthship project. The course begins with soil analysis and stabilization of clay-soil mixtures, teaching how to test and assess clay properties for building suitability. Key activities include performing soil tests on-site, preparing adobe bricks from scratch using forms and sun-drying them, mixing cob, and assembling all components for the projects. The first weekend covers principles of earthen building, introduction to other natural techniques, and benefits of earth materials. Practical steps for the cob oven encompass stone foundations, design considerations, step-by-step construction from base to finish plasters, sculpting with cob, and application of earthen and lime plasters after testing and stabilizing mixtures. For the adobe mass heater, participants learn brick preparation, assembly, and integration into structures like walls. Additional content includes lime cycle understanding, fine plaster techniques, and how adobe bricks can build entire walls. This workshop equips practitioners with actionable skills for real-world earthen construction, emphasizing hands-on implementation in a regenerative context. Ideal for those seeking field-tested methods, it provides comprehensive guidance on material sourcing, mixture ratios through testing, and finishing for durability and aesthetics in projects like ovens, heaters, and Earthships.