UJ unveils hemp brick to slash carbon and housing costs

ByEnigma 808

Sustainable building materials from the University of Johannesburg are transforming rural South African housing by replacing carbon-heavy cement with eco-friendly hemp.

University of Johannesburg hemp innovation

  • University of Johannesburg researchers engineered carbon-negative bricks.

  • Civil Engineering Technology Department scholars led development.

  • Canna-B-Africa collaborated on these innovative building blocks.

  • Ramaphosa praised the technology at a 2026 summit.

Sustainable housing and environmental perks

  • Industrial hemp absorbs more CO2 than it produces.

  • Natural insulation significantly lowers expensive winter heating bills.

  • Breathable hempcrete prevents dangerous damp-related respiratory illnesses.

  • Fire-resistant properties reduce risks within vulnerable rural settlements.

Economic and agricultural growth opportunities

  • Local hemp cultivation creates thousands of green jobs.

  • Small-scale farmers benefit from supplying woody plant cores.

  • Building costs drop by utilizing renewable regional resources.

  • Sustainable Materials and Construction Technology Research Centre oversees trials.

Addressing the national housing backlog

  • Two million families currently wait for dignified housing.

  • Hemp bricks offer cheaper alternatives to traditional masonry.

  • Smart 3D-printed systems speed up home delivery times.

  • Prototypes show superior thermal performance in extreme weather.

Author

  • Enigma XO avatar (80x80)

    Besides writing and being a content creator, Enigma 808 sometimes likes to watch paint dry on walls, listening to ASMR while timing snails racing. Such is life.