777 RUBBERIZED MOD-BIT FLASHING CEMENT — WET OR DRY

Premium, flexible flashing cement for easy repairs. Lucas #777 is a rubberized, high-performance flashing cement that applies smoothly and holds strong — even in wet conditions. It’s ideal for repairing flashings, seams, and roof penetrations on asphalt and modified bitumen systems.

Benefits:

  • Works wet or dry: Adheres securely in challenging conditions.
  • Flexible & tough: SBS polymers provide long-lasting elasticity.
  • Easy application: Spreads smoothly and cleanly for fast repairs.

Use with polyester fabric reinforcement for permanent repairs or in high-movement roof areas.

Product Documents

stripe

Available Sizes

777

Available Colors

Black

Applicable Standards

miami

Application Methods

trowel
brush

O U R  L O C A T I O N S

Alsip Plant and Corporate Office:
12400 S. Laramie Ave
Alsip, IL 60803 

 Chicago Plant:
3211 S. Wood St.
Chicago, IL 60608 

 

Austin Warehouse:
11752 S Austin Ave.
Alsip, IL 60803

 

General Office:
773-523-4300 

General Fax:
773-523-3290