Titanium® Synthetic Underlayment. The premium choice for protection that lasts. Contractors trust Titanium® Synthetic Underlayment for roofing projects that demand performance. Sure-Foot™ Technology creates a safer nodular walking surface that resists tearing and keeps working to help prevent moisture damage and cracking under tough conditions. Choose one of the most preferred premium synthetic underlayment brands — and the ideal choice for asphalt and metal roofing systems. Titanium® UDL25, UDL30, and UDL50 Roof Underlayment are part of the Owens Corning Total Protection Roofing System®