Recycled Plastic Bricks Explained: How Construction Is Turning Plastic Waste Into Strong Walls For decades, plastic waste has been treated as a growing problem — buried in landfills, burned, or pushed out of sight. But construction is beginning to rethink plastic, not as waste, but as a building resource. Recycled plastic bricks are made by shredding, melting, and compressing discarded plastic into solid construction blocks. Despite being lightweight, many of these bricks achieve strength compar