Known as the “World’s Best Roof®”, Duro-Last is the world’s largest manufacturer of custom-fabricated, thermoplastic single-ply roofing systems. Factory controlled custom-fabrication can eliminate up to 85% of field seams, resulting in lower on-site labor costs and easier installation. Duro-Last’s roofing systems are sustainable and durable. Over two billion square feet of Duro-Last membrane has been installed throughout North America.