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Lucas All-Weather Flashing Cement #779 - Wet/Dry Premium - Full Range
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Lucas #779 All-Weather Flashing Cement is a premium grade trowel-applied Flashing Cement used to install, repair or rebuild roof flashings at parapet walls, gravel stops, stacks, vents, monitors and similar applications. #779 may be used with fiberglass, polyester fabrics or roll roofing for permanent repairs. This product is may be applied to wet and underwater surfaces. If repairing modified bitumen please refer to our #776 Elite Flashing Cement.
#779 All Weather Flashing Cement is manufactured from higher softening point asphalt, petroleum solvents, reinforcing fibers and a special water displacing additive. It applies fast and smooth and breaks cleanly off the trowel without stringing.
The surface to be repaired must be clean, dry and free of debris. Apply #779 All-Weather Flashing Cement evenly with a pointed roofer's trowel or gloved hand. #779 should be applied 1/8 to 1/4 of an inch thick and may be reinforced with polyester fabric to strengthen the repair. When making a permanent repair to a blister, open up the area and allow it to dry thoroughly. In order to adhere to wet surfaces, apply the product in one direction with sufficient force to displace the water from underneath it.