Green Solutions, led by Walter Muñoz, has introduced Plock, a structural building block made from recycled plastic and natural fibers in Cali, Colombia. Unlike traditional clay bricks, Plock blocks interlock without mortar or other conventional finishes, offering a streamlined alternative for building homes and other structures.
Plock’s modular system is designed for efficiency. Each block snaps into place like a child’s construction toy, eliminating several steps common in conventional masonry. The blocks’ natural finish means walls can be left exposed or finished with other materials, reducing the need for additional coatings. The company says this approach saves time while cutting water use and construction waste at the site.
One of Plock’s standout features is its weight. Green Solutions says a square meter of wall built with Plock weighs about 21 kilograms, compared with 173 kilograms for a comparable clay-brick wall. The lighter load could make transport and handling easier, especially in remote or hard-to-reach areas. The company says it has delivered blocks to isolated communities along Colombia’s Pacific coast, where road access is limited and materials must be shipped by boat.
Environmental impact is central to Plock’s pitch. Green Solutions estimates that the blocks reduce carbon emissions by 97% and water use by 90% compared with traditional bricks. The company bases those figures on internal data. For context, the 2024 second edition of Estado de la Construcción Durable en Colombia reports a blue-water footprint of 1.45 litres per conventional brick, a sector figure that is not a direct comparison with Plock. By repurposing plastic waste and minimizing construction debris, the company aims to address pollution and resource consumption in the building sector.
Colombia’s construction-and-demolition waste rules require these materials to be separated and classified, then taken to authorized facilities instead of being dumped in waterways, public spaces, or conventional landfills. Transport records must also document the material’s origin and destination, along with its quantity by weight. These rules underscore the importance of traceable waste collection and processing in circular construction, alongside the performance of the finished product.
Durability and safety have also been addressed in the company’s account of the product. Green Solutions says Universidad del Valle spent more than two years evaluating Plock’s seismic resistance before approving it for structural use. The company says the blocks are designed to withstand earthquakes and provide thermal and acoustic insulation. It also says they resist ultraviolet exposure, moisture, and fire. Depending on project requirements, they can be used for load-bearing walls, partitions, and frames, with internal reinforcement and mortar as needed.
Water use in conventional brick production is also part of a broader sustainable-construction discussion. In Valle del Cauca, Invest Pacific and IDB Invest presented a regional study in Cali on 21 October 2026. It covered energy demand and cogeneration, along with solar power, construction-waste recovery, and chemical plastics recycling through pyrolysis. The study’s assessments of potential waste-recovery and plastics-recycling facilities were described as preliminary, reflecting ongoing regional planning around circular-economy infrastructure.
Plock is part of a wider movement toward sustainable construction, alongside innovations such as concrete made from corn waste and lime. These approaches aim to reduce environmental impact while streamlining building processes. For those interested in the economics of recycling in construction, stories such as a Madrid plumber earning €1,588 in a day by salvaging copper pipes during a renovation, detailed in this report, highlight the growing value of reusing materials.
Green Solutions reports that more than 200 homes have been built using Plock since 2016, showing the system has been used beyond prototypes. Technical details and available models can be found on the company’s official website.
