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Lucas 6600 Universal Sealant

Lucas 6600 Universal Sealant has excellent adhesion properties to almost any surface and is a high-performance, multipurpose thermoplastic elastomer-based sealant.

This sealant provides excellent adhesion to most surfaces, including metal, Kynar, asphalt, shingles, modified bitumen, EPDM, TPO, Elvaloy/ PVC, Hypalon, vinyl, fiber cement, wood, concrete, tile, masonry, and glass.

The Lucas 6600 Universal Sealant is used to seal seams, flashings, and penetrations on all types of roofs. It is ideal for residential roofing applications where appearance is important.

This product is only sold in a case of 12 10.1 oz tubes, priced at $69.95

Shipping is $12.95 per case

Please note that we only sell the standard grade.


SKU: 6600 Category:
Photo of Lucas 6600 Universal Sealant used on shingles
Photo of Lucas 6600 Universal Sealant used on vent.
Lucas 6600 Universal Sealant page: Lucas Logo

Additional Information On Lucas 6600 Universal Sealant

APPLICATION: The surface to be sealed must be clean. Porous surfaces may be primed with Lucas #5015 before the application of this product. To use, cut the tip to size and puncture the seal. The maximum recommended joint width and depth is 3/8 inch. Use a backer rod for deep joints. Please read the most current Lucas  Product Data Bulletin and SDS for this product before use. #6600 may be painted. Some paints may require up to one week of cure time before application. Keep the product warm before use.

Why a homeowner should seal seams, flashings, and penetrations on all types of roofs with Lucas 6600 Universal Sealant

Sealing seams, flashings, and penetrations on a roof is a critical maintenance task that homeowners should prioritize to ensure the longevity and integrity of their roofing system. Lucas 6600 Universal Sealant is a product designed for this very purpose. Here’s why homeowners should consider using this sealant for their roofing needs:

Durability and Longevity

Roofing systems are exposed to a variety of harsh environmental conditions, from scorching heat and ultraviolet rays to freezing temperatures and ice. Over time, these conditions can cause roofing materials to expand and contract, leading to the breakdown of seams and flashings. Lucas 6600 Universal Sealant is specifically formulated to withstand these extreme conditions, providing a long-lasting seal that helps extend the life of your roof.

The flexibility of Lucas 6600 allows it to absorb movements within the roofing materials caused by thermal expansion and contraction, which helps prevent cracks and leaks that can lead to costly water damage. A well-sealed roof with Lucas 6600 can withstand the test of time and protect your home for years to come.

Protection from Water Damage

Water is one of the most significant threats to any roofing system. If water penetrates through unsealed seams or around flashings and penetrations, it can lead to a host of problems, including mold, mildew, rot, and structural damage. By using Lucas 6600 to seal these vulnerable areas, homeowners can create a waterproof barrier that prevents moisture ingress.

The sealant’s superior adhesion properties ensure that it bonds effectively with a variety of roofing materials, forming a watertight seal that water cannot breach. This protection is invaluable, especially in climates prone to heavy rainfall or snow, where water penetration is a frequent concern.

Energy Efficiency

Lucas 6600 Universal Sealant helps maintain the energy efficiency of a home. Air leaks in a roof can significantly impact a home’s ability to retain heat in the winter and stay cool in the summer. By sealing seams, flashings, and penetrations, Lucas 6600 minimizes air leaks, which can reduce the burden on heating and cooling systems and lead to lower energy bills.

Moreover, the sealant’s reflective properties can contribute to reducing heat absorption, further aiding in maintaining a consistent temperature within the home and promoting energy efficiency.


One of the most significant advantages of Lucas 6600 is its versatility. It is designed to adhere to a wide range of materials, including asphalt, metal, Kynar-coated metals, foam, vinyl, PVC, and more. This universal application makes it an excellent choice for any type of roof, whether it’s traditional shingle, metal, or a modern composite.

The flexibility to use the same high-quality product across various roofing components streamlines maintenance for homeowners and ensures a consistent and reliable application.

Ease of Application

Lucas 6600 Universal Sealant is user-friendly, making it accessible for both professional roofers and DIY-savvy homeowners. It comes ready to use and can be easily applied with standard caulking equipment. This ease of application means that homeowners can quickly address any emerging issues with their roof before they become major problems.

Additionally, Lucas 6600 is solvent-free and does not require mixing or special preparation, which makes the application process cleaner and less hazardous.


Preventative maintenance with Lucas 6600 can save homeowners money in the long run. By regularly sealing seams, flashings, and penetrations, homeowners can avoid the costs associated with water damage repairs, mold remediation, and energy loss.

While there is an initial investment in purchasing the sealant, the cost is minimal compared to the potential expense of repairing a neglected roof. Furthermore, because Lucas 6600 is a universal sealant, homeowners need not purchase different products for different parts of the roof, which further reduces costs.

Aesthetic Preservation

Apart from its protective qualities, Lucas 6600 can help maintain the aesthetic appeal of a roof. A roof with visible damage or irregularities can detract from a home’s appearance. Lucas 6600 dries to a clean, professional finish that can enhance the overall look of the roof while protecting it from the elements.

Environmental Resistance

The formula of Lucas 6600 includes properties that make it resistant to mildew and algae, common problems in humid environments that can cause unsightly streaks and weaken roofing materials. Its resistance to environmental growth ensures that the roof remains clean and structurally sound.

Compliance with Building Codes

Lucas 6600 meets or exceeds industry standards and complies with various building codes, ensuring that homeowners are using a product that contributes to the overall safety and code compliance of their roofing system. This is particularly important when it comes to inspections, selling the home, or qualifying for insurance discounts.

Summing Up

Lucas 6600 Universal Sealant offers a comprehensive solution for homeowners looking to protect and preserve their roofing systems. Its durability, versatility, and ease of application make it an ideal choice for sealing seams, flashings, and penetrations across all types of roofs. By choosing Lucas 6600, homeowners can enjoy peace of mind knowing that their roof is well-protected against the elements, energy-efficient, and compliant with building standards, all while maintaining its aesthetic value and structural integrity.


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