The highest quality laminated copper flashing on the market today. This unique, time-proven flashing is available in 2, 3, 5, or 7 oz. per square foot to meet all your specification needs. Two layers of dense glass fabric and a special blended asphalt are laminated to the copper core to produce greater tensile strength and improved puncture resistance. This composition of copper, glass fabric, and asphalt will ensure a permanent bond in the mortar joint and protection from moisture.