Lucas #6600 Universal™ Sealant is a high-performance, multipurpose thermoplastic elastomer based roofing sealant. It sticks to nearly every common roofing surface, so you can stop playing mix-and-match with products and get a clean, professional seal—no drama, just durability.

Key Features & Design

• Material: thermoplastic elastomer based roofing sealant.
• Excellent adhesion to most surfaces including: metal, Kynar®, asphalt, shingles, modified bitumen, EPDM, TPO, Elvaloy/PVC, Hypalon, vinyl, fiber cement, wood, concrete, tile, masonry, glass.
• Color options: Clear, black, white and various colors.
• Grades: Standard caulking grade, Self-Leveling Grade (#6600SL) and Winter Grade (#6600W).
• Applications: Use to seal seams, flashings and penetrations on all types of roofs. Ideal for residential roofing applications where appearance is important.
• Prep & application: Surface to be sealed must be clean. Porous surfaces may be primed with Lucas #5015 prior to application of this product. To use, cut tip to size and puncture seal. Maximum recommended joint width and depth is 3/8 inch. Use backer rod for deep joints. Please read the most current Lucas Product Data Bulletin and SDS for this product prior to use.
• Paintability & cure: #6600 may be painted. Some paints may require up to one week cure time before application.
• Temperature & winter grade: Keep product warm prior to use. A Winter Grade formula, #6600W, is available for extreme cold weather applications.
• Shelf life: Shelf Life: Five years from the date of manufacture.
• Note: Please read the most current Lucas Product Data Bulletin and SDS for this product prior to use.

Whether you’re repairing a metal roof, asphalt shingles, or a modern TPO roof, Lucas #6600 Universal™ Sealant delivers dependable sealing with clean aesthetics—durable, versatile, and easy to work with.