Husks and other waste from the coffee production process are turned into prefabricated blocks used for construction, which can then be assembled into homes without the use of specialised training or tools.
The houses are quick and easy to build, and due to their lightweight nature can be transported to rural and difficult-to-access areas where infrastructure is most needed. Kits can be moved by helicopter, boat, or even on the back of a donkey.
Around 3,000 houses and 20 schools have been built with this technique to date, according to Woodpecker WPC's CEO Alejandro Franco.
In one recent campaign, 680 climate-adaptable homes were built in the Upper Guajira region of Colombia for the indigenous Wayuu community. The region has been suffering from the effects of climate change and has been devastated by droughts in recent years.