Black Jack, 3.6 QT, Roll Roofing Adhesive, Liquid Applied, Brushable, Asphalt Based Adhesive Designed To Bond Sheets Roll Roofing & Also Adds Additional Waterproofing Protection To The Roof Surface, No Heating Needed, Bonding Adhesive For New Construction Or Repairs, Use With Rolling Roofing, Great Adhesive & Bonding Strength, Fiber Reinforced, Heavy Brush Grade, For Exterior Use Only, Clean Up With Mineral Spirits, Cure Time 24-48 Hours, Covers Approximately 40-45 SQFT Per Gallon.