CertainTeed Roof Runner Synthetic Underlayment - Single Roll

UV Exposure: 90-day (based on standard accelerated QUV testing) Based on a tough woven polyolefin reinforcement laminated between layers of specially formulated UV-stabilized polymer films Provides a protective layer over the roof deck and acts as a secondary barrier against leaks RoofRunner requires no maintenance when installed according to the manufacturer's application instructions Roll Length: 250 feet Roll Width: 4 feet Roll Coverage: 937.5 typical net square feet Roll Weight: 23 Roll Thickness: 7 millimeters Please Note: Do not use staples or roofing nails.