Hemp construction

Marta Pinto Levy, Felipe Pinheiro, Denise Covassin

Project development: Brazil

Ecosapiens is a multidisciplinary studio focused on building healthy environments. It works on ecological projects and projects across technologies, buildings, and territories, integrating people and nature.

In this installation, we present a response to a warming world through construction with hemp, a plant species that captures CO2 from the atmosphere during its development.

When its fibers are used in hempcrete (a mixture of hemp and lime), the captured carbon is stored in the building for decades, ultimately resulting in a positive carbon balance resulting in a low environmental impact building that helps mitigate climate change.

The installation combines a prefabricated module made of wood, lime and hemp panels and another module made of bricks built on site, highlighting the versatility of the technique used in construction as a seal, which is very efficient from a thermal and acoustic point of view.

In addition to hemp, in Brazil it makes sense to consider building with other fibers such as sugarcane and coconut, which, when mixed with lime, have characteristics similar to hempcrete.

In Brazil, hemp is produced by associations for therapeutic purposes whose medicinal value is indisputable and its fiber, precisely the material used in construction, is still an unused byproduct.

Since we have no tradition of industrial hemp cultivation, its agroecological production creates an essential social value chain, allowing small farmers to remain in the countryside with dignity.

We thank everyone who participated and visited the 14th São Paulo International Architecture Biennial, from September 18 to October 19, 2025

NOTE OF CONDOLENCE

With deep sorrow, the Brazilian Institute of Architects – São Paulo Department (IABsp) mourns the passing of architect and landscape architect Kongjian Yu, a global leader in ecological urbanism, and the members of his team who accompanied him, tragically killed during the filming of a documentary. The institute is honored to have had him as a participant in the 14th São Paulo International Architecture Biennial, where his transformative vision strengthened the dialogue between global challenges and local realities. IABsp emphasizes that Yu's contribution, which transcends borders, will remain an inspiration for generations and expresses its condolences to China, to the families of all the deceased, to his friends, and to all those impacted by his genius and dedication. Read the full note here.