This synthetic roofing underlayment is 100 percent asphalt-free. Light gray in color, the membrane provides reflectivity for a cooler roof. In fact, it has more than 10 times the total solar reflectance of felt. It is designed for use under all types of primary roofing materials to replace asphalt felt paper. TITANIUM UDL offers what InterWrap calls SURE-FOOT™, a patented anti-slip nodular surface technology that allows for walking on steep slopes, even in wet conditions. The company also touts the product's strength and toughness; category-leading gauge and weight that result in excellent lay-flat handling; mold resistance; and advanced UV-exposure properties (six months).
TITANIUM UDL is six times lighter and 20 times stronger than 30-pound felt. For example, a 10-square roll weighs less than 50 pounds. Its low weight combined with 48-inch width and 250-foot run length can result in over 50 percent savings in time and labor. Because it is synthetic, this product is unaffected by water, meaning it is completely void of buckling and wrinkling, which plagues felt paper, and a roof can be left uncovered without the need for tarps or immediate dry-in. The product comes with a 25-year limited warranty and is ICC-ES, Miami-Dade, Florida Building Code, ASTM Class A, and CSA Approved.