He Paved Ghana’s Future with the Plastic that Nearly Killed Him

The 3rd of June, 2015, is a date etched in the memory of every Ghanaian. On that day, torrential rains triggered floods that submerged the capital, Accra, followed by a horrific gas station explosion that claimed over 150 lives. Nelson Boateng, who was then running a traditional plastic bag manufacturing business, found himself trapped. He survived the rising waters only by breaking through his home’s ceiling. As he looked out over the destruction, he saw the primary culprit: discarded plastic bags were clogging the city's drainage systems, turning a heavy rain into a death trap. Boateng realised he was part of the problem. That night, he decided to become a "reformed plastic manufacturer" and dedicate his life to turning the "plastic menace" into a solution for Ghana’s housing crisis.

Boateng’s journey as a maker is deeply rooted in Ashaiman, a working-class suburb where waste is often a part of the landscape. He didn't have a formal engineering degree; instead, he had 20 years of hands-on experience as a factory hand, starting at the age of 13. Armed with this technical intuition, he began experimenting with stabilising plastic waste into a durable building material. After three years of trial and error, he perfected a recipe that combined shredded plastic with common sand in a 30% to 70% ratio.

The manufacturing process at Nelplast Eco Ghana is a testament to African industrial ingenuity. Boateng designed and built his own proprietary sand-polymer extruders. The collected plastic, ranging from water sachets to laundry detergent bottles, is shredded, washed, and dried. It is then mixed with sand and fed into the extruder, which has three distinct heating zones. The mixture is heated to temperatures of between 150 and 220 degrees centigrade until it becomes a thick, molten paste. This hot paste is weighed for uniformity and then pressed into moulds under high hydraulic pressure. Within 60 to 70 seconds, a solid, interlocking brick is ejected, ready for construction.

The resulting bricks are technically superior to traditional cement blocks in almost every metric. They are 10 times stronger than grade-A concrete, yet lighter and easier to transport. Because they are interlocking, they require no mortar or cement, allowing a small team to build a house in as little as 13 days. A standard one-bedroom home built with Nelplast bricks uses approximately 13,400 kilograms of plastic waste, effectively removing that waste from the environment forever. Furthermore, the bricks have excellent thermal insulation, keeping the interior of the home cool during Ghana’s sweltering afternoons, and are fire-retardant for over two hours due to their high sand content.

Nelplast is not just a factory; it is an ecosystem of economic empowerment. The company employs 63 direct workers and supports a network of over 300 informal waste collectors, 90% of whom are women. These women scour beaches, gutters, and landfills, selling their collected plastic to Nelplast’s buy-back centres. For many, this has provided a steady income and a path out of extreme poverty. Boateng has even formed a cooperative for these women to provide them with healthcare and financial training.

The environmental impact of Nelplast is equally profound. Ghana generates 1.1 million tonnes of plastic waste annually, with only 5% currently recycled. Nelplast diverts 300 tonnes of this waste every month, turning it into roads, homes, and even school infrastructure. The bricks are 100% recyclable; at the end of a building’s life, these bricks can be shredded and moulded into new bricks, creating a perfectly circular construction model.

Today, Boateng’s innovation is gaining massive institutional support. The Ghanaian government, which once considered a total ban on plastics, is now providing $7 million in grants to recycling firms like Nelplast to help scale their operations. Boateng’s goal is to address Ghana’s 1.9 million-unit housing deficit while cleaning up the country’s cities. As he told Voice of America, his own home is built entirely from these bricks, serving as a "proof of concept" for the sceptical. For Nelson Boateng, the very material that nearly took his life in 2015 is now the foundation of his mission to build a cleaner, more affordable Ghana.

Nelplast Eco: Product Comparison & Impact